文章
Dummer. ゛☀
2017年07月31日
Family - Asteraceae
Stems - To 1m tall, erect, typically single from base, from fibrous roots, branching above, herbaceous, heavily winged from decurrent leaf tissue, scabrous, strigose. Wings of stem to 5mm broad.
Leaves - Basal leaves lanceolate to elliptic, to +20cm long, scabrous, strigose, entire to lobed. Cauline leaves alternate, lanceolate, acute, entire or with few shallow teeth, scabrous, densely strigose, to +10cm long, -2cm broad, reduced above, with heavily decurrent tissue from base.
Inflorescence - Flower heads in loose corymbiform cluster at apex of stems. Peduncles carinate, densely strigose, scabrous.
Involucre - Phyllaries linear, attenuate, reflexed at maturity and curling, in one series, 1-1.4cm long, 2.1mm broad, strigose abaxially and on margins, glabrous adaxially.
Ray flowers - Ligules yellow, to 2.5cm long, -2cm broad, 5-lobed at apex, tapering to base, densely pubescent below, glabrous above. Flowers sterile. Achenes flattened, short pubescent. Pappus of awn- tipped scales.
Disk flowers - Disk to 1.5cm broad and tall, domed to globose. Receptacle ovoid. Corolla tube of disk flowers yellow, 2-3mm long, 4-lobed, dark maroon at apex because of dense glandular pubescence. Styles bifurcate, yellow. Flowers fertile. Achenes pubescent, 1.2mm long in flower. Pappus of 5-6 awn-tipped scales.
Flowering - June - November.
Habitat - Pond margins, streambanks, ditches, swamps, wet meadows, wet depressions of prairies, pastures, moist areas of glades.
Origin - Native to U.S.
Other info. - H. flexuosum and other species in the genus contain a lactone known as Helenalin. This compound is poisonous to various animals but has anti-cancer properties. This species is often found standing alone in pastures as cows will not eat it. The plant is quite striking when in full flower and I think it should be cultivated more. It's a great plant to grow in those difficult wet areas of a yard.
H. felxuosum is easy to ID in the field because of the heavily winged stems and brown disk flowers.
Stems - To 1m tall, erect, typically single from base, from fibrous roots, branching above, herbaceous, heavily winged from decurrent leaf tissue, scabrous, strigose. Wings of stem to 5mm broad.
Leaves - Basal leaves lanceolate to elliptic, to +20cm long, scabrous, strigose, entire to lobed. Cauline leaves alternate, lanceolate, acute, entire or with few shallow teeth, scabrous, densely strigose, to +10cm long, -2cm broad, reduced above, with heavily decurrent tissue from base.
Inflorescence - Flower heads in loose corymbiform cluster at apex of stems. Peduncles carinate, densely strigose, scabrous.
Involucre - Phyllaries linear, attenuate, reflexed at maturity and curling, in one series, 1-1.4cm long, 2.1mm broad, strigose abaxially and on margins, glabrous adaxially.
Ray flowers - Ligules yellow, to 2.5cm long, -2cm broad, 5-lobed at apex, tapering to base, densely pubescent below, glabrous above. Flowers sterile. Achenes flattened, short pubescent. Pappus of awn- tipped scales.
Disk flowers - Disk to 1.5cm broad and tall, domed to globose. Receptacle ovoid. Corolla tube of disk flowers yellow, 2-3mm long, 4-lobed, dark maroon at apex because of dense glandular pubescence. Styles bifurcate, yellow. Flowers fertile. Achenes pubescent, 1.2mm long in flower. Pappus of 5-6 awn-tipped scales.
Flowering - June - November.
Habitat - Pond margins, streambanks, ditches, swamps, wet meadows, wet depressions of prairies, pastures, moist areas of glades.
Origin - Native to U.S.
Other info. - H. flexuosum and other species in the genus contain a lactone known as Helenalin. This compound is poisonous to various animals but has anti-cancer properties. This species is often found standing alone in pastures as cows will not eat it. The plant is quite striking when in full flower and I think it should be cultivated more. It's a great plant to grow in those difficult wet areas of a yard.
H. felxuosum is easy to ID in the field because of the heavily winged stems and brown disk flowers.
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文章
Dummer. ゛☀
2017年07月31日
Family - Tiliaceae
Stems - A tree to 40m, with a single trunk or, typically, with more than two.
Leaves - Alternate, petiolate. Petiole to 10cm long, glabrous. Blade oblique at base, acuminate, serrate, to 20cm long, lower surface lighter green than upper surface and with hairs in tufts in axils of nerves, upper surface mostly glabrous. Teeth of blade with minute cilia on margins.
Inflorescence - Axillary open pendulous cymes from new seasons growth, with 5-8 flowers. Peduncle adnate to white bract for about half it's length, glabrous. Bract to +/-8cm long, to -1.5cm broad, glabrous except for few hairs near axil with peduncle, creamy-white. Pedicels to 7.5mm long, green, 1mm in diameter, glabrous.
Flowers - Petals 5, greenish-white, alternating with sepals, 7.5mm long, 3mm broad, cupped. Stamens many. Filaments white to pale yellow, to 4mm long, glabrous. Anthers yellow, 1mm long. Style 5mm long, mostly glabrous but with tufts of hairs near base. Ovary globose, 2.1mm in diameter, tomentose, 5-locular. Sepals 5, free, ovate-lanceolate, to 6mm long, 3mm broad, greenish white, with nectary at base, (appearing as translucent hump). Fruit ovoid to spherical, 4-5mm in diameter, tome
Stems - A tree to 40m, with a single trunk or, typically, with more than two.
Leaves - Alternate, petiolate. Petiole to 10cm long, glabrous. Blade oblique at base, acuminate, serrate, to 20cm long, lower surface lighter green than upper surface and with hairs in tufts in axils of nerves, upper surface mostly glabrous. Teeth of blade with minute cilia on margins.
Inflorescence - Axillary open pendulous cymes from new seasons growth, with 5-8 flowers. Peduncle adnate to white bract for about half it's length, glabrous. Bract to +/-8cm long, to -1.5cm broad, glabrous except for few hairs near axil with peduncle, creamy-white. Pedicels to 7.5mm long, green, 1mm in diameter, glabrous.
Flowers - Petals 5, greenish-white, alternating with sepals, 7.5mm long, 3mm broad, cupped. Stamens many. Filaments white to pale yellow, to 4mm long, glabrous. Anthers yellow, 1mm long. Style 5mm long, mostly glabrous but with tufts of hairs near base. Ovary globose, 2.1mm in diameter, tomentose, 5-locular. Sepals 5, free, ovate-lanceolate, to 6mm long, 3mm broad, greenish white, with nectary at base, (appearing as translucent hump). Fruit ovoid to spherical, 4-5mm in diameter, tome
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Dummer. ゛☀
2017年07月31日
Family - Rosaceae
Stems - Multiple from base, spreading to ascending or erect, herbaceous, to +45cm long, villous, branching near apex.
Leaves - Alternate. Basal leaves toothed, typically unlobed but also 3 to 5-lobed, crenate-serrate, petiolate, to +25cm long. Lower cauline leaves pinnately divided, serrate, pubescent above, pubescent typically on veins below. Upper cauline leaves typically 3-lobed (lobes often divided further), serrate, ciliate-margined, glabrous to sparse pubescent above, pubescent on veins below, dull green above, silvery-green below. Stipules at base of petioles serrate, with same pubescence as leaf blade.
Inflorescence - Loose cymes terminating stems. Peduncles and pedicels with sparse villous pubescence mostly near base or glabrous.
Flowers - Petals yellow to yellow-orange, 5, to 3mm long, clawed, glabrous. Hypanthium campanulate, 2-3mm broad, 1.5mm tall (long), glabrous. Stamens +20, borne at edge of hypanthium, persistent in fruit. Filaments to 1mm long. Anthers yellow, .6mm in diameter. Sepals 5, acute to acuminate, 2mm long in flower, ciliate-margined, sharply recurved, persisting and elongating below fruit. Ovary stalked. Stalk elongating in fruit. Achenes glandular pubescent, beaked with persistent styles and stigmas.
Flowering - April - June.
Habitat - Moist ground, thicket edges, waste ground.
Origin - Native to U.S.
Other info. - This is a common little plant which can bloom fairly early in the season. The growth habits can be variable from erect to nearly prostrate. The flowers are very small, as you can see from the pics, and it is common for the petals to be fewer than 5. The achenes have a "hinged" barb which is the persistent style and stigma. The basal leaves are often missing or dying off by the time the plant is in heavy flower.
Stems - Multiple from base, spreading to ascending or erect, herbaceous, to +45cm long, villous, branching near apex.
Leaves - Alternate. Basal leaves toothed, typically unlobed but also 3 to 5-lobed, crenate-serrate, petiolate, to +25cm long. Lower cauline leaves pinnately divided, serrate, pubescent above, pubescent typically on veins below. Upper cauline leaves typically 3-lobed (lobes often divided further), serrate, ciliate-margined, glabrous to sparse pubescent above, pubescent on veins below, dull green above, silvery-green below. Stipules at base of petioles serrate, with same pubescence as leaf blade.
Inflorescence - Loose cymes terminating stems. Peduncles and pedicels with sparse villous pubescence mostly near base or glabrous.
Flowers - Petals yellow to yellow-orange, 5, to 3mm long, clawed, glabrous. Hypanthium campanulate, 2-3mm broad, 1.5mm tall (long), glabrous. Stamens +20, borne at edge of hypanthium, persistent in fruit. Filaments to 1mm long. Anthers yellow, .6mm in diameter. Sepals 5, acute to acuminate, 2mm long in flower, ciliate-margined, sharply recurved, persisting and elongating below fruit. Ovary stalked. Stalk elongating in fruit. Achenes glandular pubescent, beaked with persistent styles and stigmas.
Flowering - April - June.
Habitat - Moist ground, thicket edges, waste ground.
Origin - Native to U.S.
Other info. - This is a common little plant which can bloom fairly early in the season. The growth habits can be variable from erect to nearly prostrate. The flowers are very small, as you can see from the pics, and it is common for the petals to be fewer than 5. The achenes have a "hinged" barb which is the persistent style and stigma. The basal leaves are often missing or dying off by the time the plant is in heavy flower.
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Dummer. ゛☀
2017年07月31日
Family - Asteraceae
Stems - To +1m tall, branching above, erect, herbaceous, glabrous, often reddish, from taproot.
Leaves - Alternate, sessile, linear to linear oblong, minutely appressed pubescent above and below, randomly serrate, acute, to +/-10cm long, +/-1.5cm broad. Margins between teeth setulose.
Inflorescence - Single flower head terminating branches of stem.
Involucre - To 1.1cm tall, 1.7cm in diameter. Phyllaries loosely imbricate, linear-attenuate, glabrous, viscid, to 1.4cm long, 1.5mm broad at base, spreading to suberect.
Ray flowers - Ligule yellow, to -2cm long, +/-3mm broad, glabrous, viscid. Flowers fertile. Achene white (in flower), 1.4mm long, glabrous. Pappus a pair of filiform awns to 6mm long.
Disk flowers - Disk to 1.7cm broad. Corolla tube yellow, 4mm long, 5-lobed, viscid. Lobes acute, .8mm long, sometimes with sparse pubescence. Flowers fertile. Stamens 5, adnate to base of corolla tube. Filaments very short. Anthers to 3mm long, included, connate around style. Style bifurcate. Stigmas pubescent. Achene slightly flattened, white (in flower), .9mm long, glabrous. Pappus a pair of filiform awns to 6mm long.
Flowering - August - October.
Habitat - Limestone glades, rocky open ground, bald knobs, rocky roadsides, waste ground.
Origin - Native to U.S.
Other info. - This species of Grindelia is very common in the southwestern part of the state, but grows in other locations throughout the state. Most parts of the plant, especially the flowers, are very sticky (viscid). The flowers are quite showy and I'm surprised the plant is not cultivated more. It grows in very rocky soil.
Stems - To +1m tall, branching above, erect, herbaceous, glabrous, often reddish, from taproot.
Leaves - Alternate, sessile, linear to linear oblong, minutely appressed pubescent above and below, randomly serrate, acute, to +/-10cm long, +/-1.5cm broad. Margins between teeth setulose.
Inflorescence - Single flower head terminating branches of stem.
Involucre - To 1.1cm tall, 1.7cm in diameter. Phyllaries loosely imbricate, linear-attenuate, glabrous, viscid, to 1.4cm long, 1.5mm broad at base, spreading to suberect.
Ray flowers - Ligule yellow, to -2cm long, +/-3mm broad, glabrous, viscid. Flowers fertile. Achene white (in flower), 1.4mm long, glabrous. Pappus a pair of filiform awns to 6mm long.
Disk flowers - Disk to 1.7cm broad. Corolla tube yellow, 4mm long, 5-lobed, viscid. Lobes acute, .8mm long, sometimes with sparse pubescence. Flowers fertile. Stamens 5, adnate to base of corolla tube. Filaments very short. Anthers to 3mm long, included, connate around style. Style bifurcate. Stigmas pubescent. Achene slightly flattened, white (in flower), .9mm long, glabrous. Pappus a pair of filiform awns to 6mm long.
Flowering - August - October.
Habitat - Limestone glades, rocky open ground, bald knobs, rocky roadsides, waste ground.
Origin - Native to U.S.
Other info. - This species of Grindelia is very common in the southwestern part of the state, but grows in other locations throughout the state. Most parts of the plant, especially the flowers, are very sticky (viscid). The flowers are quite showy and I'm surprised the plant is not cultivated more. It grows in very rocky soil.
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Dummer. ゛☀
2017年07月31日
Family - Euphorbiaceae
Stems - To +30cm tall, from creeping rhizomes and stout roots, erect, herbaceous, with milky sap, green, terete, multiple from the base, simple except in the inflorescence, glabrous.
Leaves - Alternate, sessile, dense on the stem, spreading, to +/-3cm long, 2-3mm broad, linear, entire, rounded to acute at the apex, with a single midrib, dark green or with a reddish-purple tinge, glabrous. Margins slightly revolute.
Inflorescence - Terminal umbel with 10 or more main rays. Flowers terminating the dense branches of the inflorescence. Branches of the inflorescence glabrous, the main ones to +2cm long. Pedicels of the flowers glabrous and very short (1-2mm long). Flowers subtended by an involucre of 2 bracts. Bracts green to yellow, reniform, glabrous, cupped around the flowers.
Flowers - Cyathia greenish to yellow, 2-3mm long, with 4 yellowish glands at the apex. Glands 1-1.5mm broad, 1mm long, with 2 horn-like projections at each end. The projections .5mm long. Tissue of the cyathia between the glands erose. Ovary partially exserted beyond the cyathia, 3-sided, with 3 locules (one ovule per locule), -1mm long and broad in flower, on a stalk to 1mm long, both stalk and ovary green, glabrous. Styles 3, united in the basal 1/3, 1mm long, green, glabrous, divided at the apices into 6 stigmas. Stamens many, included or partially exserted from the cyathia. Filaments white, glabrous, to 2mm long. Anthers green, bilobed, .7mm broad, .5mm long.
Flowering - April - August.
Habitat - Cultivated and escaped to fields and roadsides, also found around old homesites.
Origin - Native to Europe.
Other info. - This attractive species can be found cultivated throughout much of Missouri and is persistent around old homesites and cemeteries. Since the plant rarely produces viable seed, it has not become more widespread and weedy. The plant grows easily from a rhizome cutting and requires little care once established.
Steyermark wrote that the plant was used medicinally but poisoning occurred in cases of overuse.
Stems - To +30cm tall, from creeping rhizomes and stout roots, erect, herbaceous, with milky sap, green, terete, multiple from the base, simple except in the inflorescence, glabrous.
Leaves - Alternate, sessile, dense on the stem, spreading, to +/-3cm long, 2-3mm broad, linear, entire, rounded to acute at the apex, with a single midrib, dark green or with a reddish-purple tinge, glabrous. Margins slightly revolute.
Inflorescence - Terminal umbel with 10 or more main rays. Flowers terminating the dense branches of the inflorescence. Branches of the inflorescence glabrous, the main ones to +2cm long. Pedicels of the flowers glabrous and very short (1-2mm long). Flowers subtended by an involucre of 2 bracts. Bracts green to yellow, reniform, glabrous, cupped around the flowers.
Flowers - Cyathia greenish to yellow, 2-3mm long, with 4 yellowish glands at the apex. Glands 1-1.5mm broad, 1mm long, with 2 horn-like projections at each end. The projections .5mm long. Tissue of the cyathia between the glands erose. Ovary partially exserted beyond the cyathia, 3-sided, with 3 locules (one ovule per locule), -1mm long and broad in flower, on a stalk to 1mm long, both stalk and ovary green, glabrous. Styles 3, united in the basal 1/3, 1mm long, green, glabrous, divided at the apices into 6 stigmas. Stamens many, included or partially exserted from the cyathia. Filaments white, glabrous, to 2mm long. Anthers green, bilobed, .7mm broad, .5mm long.
Flowering - April - August.
Habitat - Cultivated and escaped to fields and roadsides, also found around old homesites.
Origin - Native to Europe.
Other info. - This attractive species can be found cultivated throughout much of Missouri and is persistent around old homesites and cemeteries. Since the plant rarely produces viable seed, it has not become more widespread and weedy. The plant grows easily from a rhizome cutting and requires little care once established.
Steyermark wrote that the plant was used medicinally but poisoning occurred in cases of overuse.
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Dummer. ゛☀
2017年07月31日
Family - Euphorbiaceae
Stems - To +30cm tall, dichotomously branched, typically reddish at base, herbaceous, glabrous, erect, with milky sap.
Leaves - Lower leaves alternate, short-petiolate, spatulate to obcordate, emarginate, glabrous, falling near time of flower, smaller than upper leaves. Upper leaves (bracts) opposite, sessile, glabrous, reniform to broadly ovate, entire, emarginate or rounded at apex, to 1.5cm broad, 1cm long.
Inflorescence - Cyathia terminating stems in a dichasial arrangement.
Flowers - Involucre of cyathia 3mm long, glabrous. Glands of cyathia 4, yellow, 2-horned, flattened, 2-3mm long. Stamens 6, included in cyathia. Filaments flattened. Styles 3, bifurcate, .8mm long. Stigmas globose. Capsule 3-lobed, 1mm long in flower, expanding in fruit, one seed per locule.
Flowering - April - June.
Habitat - Ravines, rocky woods, valleys, streambanks.
Origin - Native to U.S.
Other info. - I've included this plant in the alternate leaved section because the actual leaves are alternate. The larger bracts of the plant in the inflorescence are opposite, so don't be confused.
I photographed this plant on a steep rocky slope down in Taney County near sunset, hence the slightly fuzzy pictures. I have seen it growing mostly in very rocky conditions, which it seems to tolerate well. The leaves and stem turn bright red as the plant starts to age.
Stems - To +30cm tall, dichotomously branched, typically reddish at base, herbaceous, glabrous, erect, with milky sap.
Leaves - Lower leaves alternate, short-petiolate, spatulate to obcordate, emarginate, glabrous, falling near time of flower, smaller than upper leaves. Upper leaves (bracts) opposite, sessile, glabrous, reniform to broadly ovate, entire, emarginate or rounded at apex, to 1.5cm broad, 1cm long.
Inflorescence - Cyathia terminating stems in a dichasial arrangement.
Flowers - Involucre of cyathia 3mm long, glabrous. Glands of cyathia 4, yellow, 2-horned, flattened, 2-3mm long. Stamens 6, included in cyathia. Filaments flattened. Styles 3, bifurcate, .8mm long. Stigmas globose. Capsule 3-lobed, 1mm long in flower, expanding in fruit, one seed per locule.
Flowering - April - June.
Habitat - Ravines, rocky woods, valleys, streambanks.
Origin - Native to U.S.
Other info. - I've included this plant in the alternate leaved section because the actual leaves are alternate. The larger bracts of the plant in the inflorescence are opposite, so don't be confused.
I photographed this plant on a steep rocky slope down in Taney County near sunset, hence the slightly fuzzy pictures. I have seen it growing mostly in very rocky conditions, which it seems to tolerate well. The leaves and stem turn bright red as the plant starts to age.
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Dummer. ゛☀
2017年07月31日
Family - Liliaceae
Stems - Plants acaulescent, from a scaly bulb.
Leaves - Basal, petiolate, typically two per fertile plant, (one leaf on sterile plants). Blades glabrous, entire, fleshy to subsucculent, acute to acuminate, mottled with silver above, green below, linear-elliptic to ovate-elliptic, to +20cm long, +5cm broad.
Inflorescence - Single flower terminating peduncle (scape), typically only one per plant. Flower nodding. Peduncle glabrous, to +15cm tall.
Flowers - Tepals 6, yellow to brownish, glabrous, entire, 4.5-5cm long, 7-8mm broad, recurved in flower, glabrous. Stamens 6, adnate to base of tepals. Filaments to 1.7cm long, 1.5mm broad, yellow, glabrous. Anthers 1.3cm long, purple. Ovary 1.3cm long, 3-angled, 3-locular, green, glabrous, superior. Placentation axile. Style 6mm long, expanded at apex. Stigma hollow at apex, lobed, yellow.
Flowering - March - May.
Habitat - Low rich woods, along streams, wooded slopes.
Origin - Native to U.S.
Other info. - This striking species is found mainly in the lower 1/3 of Missouri. The yellow flowers are easy to spot against the leaf litter of the woods. This species can be found in colonies of sterile, one-leaved plants along with a few fertile, two-leaved plants.
Traditionally the bulbs and leaves of this species were eaten, either raw or cooked. The plant was also used medicinally to heal ulcers and as a contraceptive. The plant is believed to be mildly emetic and antibiotic.
Stems - Plants acaulescent, from a scaly bulb.
Leaves - Basal, petiolate, typically two per fertile plant, (one leaf on sterile plants). Blades glabrous, entire, fleshy to subsucculent, acute to acuminate, mottled with silver above, green below, linear-elliptic to ovate-elliptic, to +20cm long, +5cm broad.
Inflorescence - Single flower terminating peduncle (scape), typically only one per plant. Flower nodding. Peduncle glabrous, to +15cm tall.
Flowers - Tepals 6, yellow to brownish, glabrous, entire, 4.5-5cm long, 7-8mm broad, recurved in flower, glabrous. Stamens 6, adnate to base of tepals. Filaments to 1.7cm long, 1.5mm broad, yellow, glabrous. Anthers 1.3cm long, purple. Ovary 1.3cm long, 3-angled, 3-locular, green, glabrous, superior. Placentation axile. Style 6mm long, expanded at apex. Stigma hollow at apex, lobed, yellow.
Flowering - March - May.
Habitat - Low rich woods, along streams, wooded slopes.
Origin - Native to U.S.
Other info. - This striking species is found mainly in the lower 1/3 of Missouri. The yellow flowers are easy to spot against the leaf litter of the woods. This species can be found in colonies of sterile, one-leaved plants along with a few fertile, two-leaved plants.
Traditionally the bulbs and leaves of this species were eaten, either raw or cooked. The plant was also used medicinally to heal ulcers and as a contraceptive. The plant is believed to be mildly emetic and antibiotic.
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Dummer. ゛☀
2017年07月31日
Family - Brassicaceae
Stems - To +40cm tall, from stout taproot, branching, herbaceous, erect, single or multiple from base, carinate, with appressed pubescence. Hairs of stem bifurcate and oriented parallel to stem axis.
Leaves - Early season leaves in basal rosette. Blades to +10cm long and +1cm broad. Tips of basal leaves often curled or hooked. Leaves of stem alternate, gradually reduced upward, coarsely toothed to sub-entire, linear to narrowly oblong, tapering to base, sessile to short petiolate, with bifurcate appressed pubescence above and below.
Inflorescence - Terminal racemes, sub-compact in flower and elongating in fruit to +25cm long.
Flowers - Petals 4, clawed, yellow to bicolored with yellow and white. Claw to 6mm long. Limb of petal 3-4mm long, -2mm broad, glabrous. Stamens 6. Filaments glabrous, whitish, to 6mm long. Anthers -1mm long, greenish-yellow. Ovary to 5mm long, 4-angled, .5mm broad. Style wanting. Sepals 4, distinct, pubescent as stem and leaves, to -6mm long, 1.1mm broad, linear, light green with lighter margins near apex, erect.
Fruit - Siliques to 7.5cm long, 4-angled, widely spreading to erect, with pubescence as stem and leaves, beaked, many seeded. Beak to 4mm long. Pedicels thick, to 5mm long, typically at nearly right angles to axis of stem.
Flowering - April - July.
Habitat - Waste ground, disturbed sites, roadsides, railroads.
Origin - Native to Europe.
Other info. - Still another of the many introduced members of the Brassicaceae! This plant is extremely common and can be found almost anywhere. The flowers can be solid yellow or bicolored as seen above. The taproot can get quite large for the size of the plant, especially if there is not much water near the surface of the ground.
Stems - To +40cm tall, from stout taproot, branching, herbaceous, erect, single or multiple from base, carinate, with appressed pubescence. Hairs of stem bifurcate and oriented parallel to stem axis.
Leaves - Early season leaves in basal rosette. Blades to +10cm long and +1cm broad. Tips of basal leaves often curled or hooked. Leaves of stem alternate, gradually reduced upward, coarsely toothed to sub-entire, linear to narrowly oblong, tapering to base, sessile to short petiolate, with bifurcate appressed pubescence above and below.
Inflorescence - Terminal racemes, sub-compact in flower and elongating in fruit to +25cm long.
Flowers - Petals 4, clawed, yellow to bicolored with yellow and white. Claw to 6mm long. Limb of petal 3-4mm long, -2mm broad, glabrous. Stamens 6. Filaments glabrous, whitish, to 6mm long. Anthers -1mm long, greenish-yellow. Ovary to 5mm long, 4-angled, .5mm broad. Style wanting. Sepals 4, distinct, pubescent as stem and leaves, to -6mm long, 1.1mm broad, linear, light green with lighter margins near apex, erect.
Fruit - Siliques to 7.5cm long, 4-angled, widely spreading to erect, with pubescence as stem and leaves, beaked, many seeded. Beak to 4mm long. Pedicels thick, to 5mm long, typically at nearly right angles to axis of stem.
Flowering - April - July.
Habitat - Waste ground, disturbed sites, roadsides, railroads.
Origin - Native to Europe.
Other info. - Still another of the many introduced members of the Brassicaceae! This plant is extremely common and can be found almost anywhere. The flowers can be solid yellow or bicolored as seen above. The taproot can get quite large for the size of the plant, especially if there is not much water near the surface of the ground.
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Dummer. ゛☀
2017年07月31日
Family - Asteraceae
Stems - Scapose, to +/-75cm tall, multiple from base, erect, herbaceous, glabrous to sparsely strigose, simple, from thickened roots.
Leaves - Mostly basal, alternate, lowest petiolate, becoming sessile above. Petioles to +/-25cm long. Blade to +30cm long, -3cm broad, scabrous, linear-oblong, acuminate, shiny green above and below. Margins entire but antrorse strigillose. Leaf tissue long tapering at base and creating a wing on the petiole. Leaves quickly reduced upward and absent on upper 2/3 of stem.
Inflorescence - Single flower head terminating stem.
Involucre - Phyllaries acuminate-attenuate, in 2-3 series, imbricate, to +/-1cm long, 3-4mm broad at base, glabrous with antrorse strigillose margins, recurving with age.
Ray flowers - Sterile. Ligule yellow, to 3cm long, 5mm broad, 3-toothed at apex, glabrous. Achene 3-angled, 3mm long(in flower), winged on margins.
Disk flowers - Disk to +/-2.5cm in diameter. Flowers fertile. Corolla tube to 3mm long, brownish-purple, 5-lobed, glabrous. Lobes 1mm long, acute. Achene slightly compressed, 3.1mm long, glabrous. Pappus a minute crown or absent. Receptacle conic. Chaff stiff, erect, exceeding the disk flowers, to 1.1cm long, brownish-purple at apex, partially enclosing achene and corolla tube.
Flowering - May - June.
Habitat - Glades, barrens, bald knobs.
Origin - Native to U.S.
Other info. - Definitely not your fathers Echinacea! This plant is only found in the Ozark region of Missouri and Arkansas. It is, however, cultivated elsewhere. The plant is typical of the genus except for brilliant yellow ray ligules. It is easily identified in the field because of its long thin leaves and big conic disk.
Stems - Scapose, to +/-75cm tall, multiple from base, erect, herbaceous, glabrous to sparsely strigose, simple, from thickened roots.
Leaves - Mostly basal, alternate, lowest petiolate, becoming sessile above. Petioles to +/-25cm long. Blade to +30cm long, -3cm broad, scabrous, linear-oblong, acuminate, shiny green above and below. Margins entire but antrorse strigillose. Leaf tissue long tapering at base and creating a wing on the petiole. Leaves quickly reduced upward and absent on upper 2/3 of stem.
Inflorescence - Single flower head terminating stem.
Involucre - Phyllaries acuminate-attenuate, in 2-3 series, imbricate, to +/-1cm long, 3-4mm broad at base, glabrous with antrorse strigillose margins, recurving with age.
Ray flowers - Sterile. Ligule yellow, to 3cm long, 5mm broad, 3-toothed at apex, glabrous. Achene 3-angled, 3mm long(in flower), winged on margins.
Disk flowers - Disk to +/-2.5cm in diameter. Flowers fertile. Corolla tube to 3mm long, brownish-purple, 5-lobed, glabrous. Lobes 1mm long, acute. Achene slightly compressed, 3.1mm long, glabrous. Pappus a minute crown or absent. Receptacle conic. Chaff stiff, erect, exceeding the disk flowers, to 1.1cm long, brownish-purple at apex, partially enclosing achene and corolla tube.
Flowering - May - June.
Habitat - Glades, barrens, bald knobs.
Origin - Native to U.S.
Other info. - Definitely not your fathers Echinacea! This plant is only found in the Ozark region of Missouri and Arkansas. It is, however, cultivated elsewhere. The plant is typical of the genus except for brilliant yellow ray ligules. It is easily identified in the field because of its long thin leaves and big conic disk.
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Dummer. ゛☀
2017年07月31日
Family - Rosaceae
Stems - Trailing, rooting at nodes, to +30cm long, strigose to pilose, herbaceous, multiple from the base.
Leaves - Alternate, petiolate, stipulate, trifoliolate. Stipules to +/-7mm long, +/-3mm broad, oblong-lanceolate, ciliate-margined. Petioles to +/-6cm long, antrorse strigose. Petiolules to 5mm long. Leaflets ovate (the lateral leaflets oblique at the base), crenate-serrate, to 5cm long, -3cm broad, strigose above and below on veins. Margins strigillose.
Inflorescence - Single pedunculate axillary flowers. Peduncles erect, -6cm long, antrorse strigose.
Flowers - Hypanthium short, broad, with five 3-lobed bracts alternating with the sepals. Bracts +/-6mm long in flower, +/-6mm broad, with ciliolate margins. Sepals apiculate to aristate, 7-8mm long, 4mm broad, arachnoid pubescent above, ciliolate-margined, pilose below, yellowish at base. Stamens erect, borne at the edge of the receptacle, +/-20. Filaments yellow, glabrous, 3mm long. Anthers yellow, roundish, -1mm long. Hypanthium ciliate internally. Ovary purplish, 3mm long, 2mm in diameter. Receptacle conic, glabrous. Achenes brownish-purple, glabrous, reniform, -1mm broad. Style yellow, glabrous, 1.3mm long. Stigma capitate. Petals 5, yellow, distinct, spreading, 7-8mm long, 4-5mm broad, entire, glabrous, emarginate to truncate at apex. Fruit an aggregate, red, much like a strawberry but bland in taste, to +/-1cm long.
Flowering - April - June.
Habitat - Open woods, prairies, fields, lawns, waste ground.
Origin - Native to Asia.
Other info. - This small introduced species can be found throughout much of Missouri. The bright yellow flowers are easy to see in the spring as are the bright red fruits that follow. Although the fruits look mighty tasty, they are quite bland and dry and are certainly no substitute for real strawberries, genus Fragaria.
Stems - Trailing, rooting at nodes, to +30cm long, strigose to pilose, herbaceous, multiple from the base.
Leaves - Alternate, petiolate, stipulate, trifoliolate. Stipules to +/-7mm long, +/-3mm broad, oblong-lanceolate, ciliate-margined. Petioles to +/-6cm long, antrorse strigose. Petiolules to 5mm long. Leaflets ovate (the lateral leaflets oblique at the base), crenate-serrate, to 5cm long, -3cm broad, strigose above and below on veins. Margins strigillose.
Inflorescence - Single pedunculate axillary flowers. Peduncles erect, -6cm long, antrorse strigose.
Flowers - Hypanthium short, broad, with five 3-lobed bracts alternating with the sepals. Bracts +/-6mm long in flower, +/-6mm broad, with ciliolate margins. Sepals apiculate to aristate, 7-8mm long, 4mm broad, arachnoid pubescent above, ciliolate-margined, pilose below, yellowish at base. Stamens erect, borne at the edge of the receptacle, +/-20. Filaments yellow, glabrous, 3mm long. Anthers yellow, roundish, -1mm long. Hypanthium ciliate internally. Ovary purplish, 3mm long, 2mm in diameter. Receptacle conic, glabrous. Achenes brownish-purple, glabrous, reniform, -1mm broad. Style yellow, glabrous, 1.3mm long. Stigma capitate. Petals 5, yellow, distinct, spreading, 7-8mm long, 4-5mm broad, entire, glabrous, emarginate to truncate at apex. Fruit an aggregate, red, much like a strawberry but bland in taste, to +/-1cm long.
Flowering - April - June.
Habitat - Open woods, prairies, fields, lawns, waste ground.
Origin - Native to Asia.
Other info. - This small introduced species can be found throughout much of Missouri. The bright yellow flowers are easy to see in the spring as are the bright red fruits that follow. Although the fruits look mighty tasty, they are quite bland and dry and are certainly no substitute for real strawberries, genus Fragaria.
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Dummer. ゛☀
2017年07月31日
Family - Asteraceae
Stems - Erect, multiple from base, branching, herbaceous, glabrous, often glaucous, light green with darker green striate nerves, terete, solid, annual from a taproot.
Leaves - Alternate, sessile, auriculate-clasping. Lowest leaves elliptic, shallow serrate, to +10cm long, 3-4cm broad, gradually reduced upward, light green, acute, with antrorse strigose margins. Upper leaves becoming ovate.
Inflorescence - Single, long-peduncled, terminal flower head. Peduncle expanded just below the involucre.
Involucre - +/-2cm broad, with +/-10 phyllaries. Phyllaries spreading, subulate, 3-8mm long, +/-2mm broad at base, entire, glabrous, with antrorse strigose margins.
Ray flowers - +/-8 per flower head. Ligule oblong, 1-2cm long, +/-1cm broad, orangish-yellow and red to maroon at the base, antrorse pubescent below, glabrous above. Corolla tube 1mm long, pubescent externally with yellowish hairs. Pappus absent. Achene 2mm long in flower, 4-angled, pubescent on the angles.
Disk flowers - Disk conical at first and quickly becoming columnar, to +3cm tall, to +1.5cm in diameter. Flowers 5-lobed. Corolla tube glabrous externally, whitish green in the basal half, purplish with darker purple nerves in the apical half. Lobes spreading to reflexed, .3-.5mm long, .2mm broad at base, acute, yellow internally. Stamens 5, adnate near the base of the corolla tube. Filaments white, glabrous, -1mm long. Anthers dark purple, 1.5mm long, connate around the style, partially exserted. Style translucent in basal half, purple in apical half, 2mm long, bifurcate. Stigmas 2mm long, dark purple, pubescent in apical half. Pappus absent. Achene glabrous, white in flower, 2mm long in flower. Mature achene black, glabrous, +?-3mm long. Receptacle glabrous, with chaff. Chaff acute, translucent-white with two dark stripes near the margins and green at the apex, ciliolate at the apex, glabrous below, +/-5mm long.
Flowering - June - July.
Habitat - Prairies, chert barrens along streams, waste ground, roadsides.
Origin - Native to U.S.
Other info. - This attractive species can be found in just a few western Missouri counties in the prairie region. The plant is easy to identify becasue of its clasping leaves and distinctive columnar disks. It is an easy species to grow and would make a good garden subject.
Stems - Erect, multiple from base, branching, herbaceous, glabrous, often glaucous, light green with darker green striate nerves, terete, solid, annual from a taproot.
Leaves - Alternate, sessile, auriculate-clasping. Lowest leaves elliptic, shallow serrate, to +10cm long, 3-4cm broad, gradually reduced upward, light green, acute, with antrorse strigose margins. Upper leaves becoming ovate.
Inflorescence - Single, long-peduncled, terminal flower head. Peduncle expanded just below the involucre.
Involucre - +/-2cm broad, with +/-10 phyllaries. Phyllaries spreading, subulate, 3-8mm long, +/-2mm broad at base, entire, glabrous, with antrorse strigose margins.
Ray flowers - +/-8 per flower head. Ligule oblong, 1-2cm long, +/-1cm broad, orangish-yellow and red to maroon at the base, antrorse pubescent below, glabrous above. Corolla tube 1mm long, pubescent externally with yellowish hairs. Pappus absent. Achene 2mm long in flower, 4-angled, pubescent on the angles.
Disk flowers - Disk conical at first and quickly becoming columnar, to +3cm tall, to +1.5cm in diameter. Flowers 5-lobed. Corolla tube glabrous externally, whitish green in the basal half, purplish with darker purple nerves in the apical half. Lobes spreading to reflexed, .3-.5mm long, .2mm broad at base, acute, yellow internally. Stamens 5, adnate near the base of the corolla tube. Filaments white, glabrous, -1mm long. Anthers dark purple, 1.5mm long, connate around the style, partially exserted. Style translucent in basal half, purple in apical half, 2mm long, bifurcate. Stigmas 2mm long, dark purple, pubescent in apical half. Pappus absent. Achene glabrous, white in flower, 2mm long in flower. Mature achene black, glabrous, +?-3mm long. Receptacle glabrous, with chaff. Chaff acute, translucent-white with two dark stripes near the margins and green at the apex, ciliolate at the apex, glabrous below, +/-5mm long.
Flowering - June - July.
Habitat - Prairies, chert barrens along streams, waste ground, roadsides.
Origin - Native to U.S.
Other info. - This attractive species can be found in just a few western Missouri counties in the prairie region. The plant is easy to identify becasue of its clasping leaves and distinctive columnar disks. It is an easy species to grow and would make a good garden subject.
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Dummer. ゛☀
2017年07月31日
Family - Thymelaeaceae
Stems - Woody shrub to 2m tall, freely branching. Twigs jointed, glabrous, expanding at nodes and buds, flexible. Each node typically with a small spur. Plants rarely found with stems over 6cm in diameter.
Leaves - Alternate, short-petiolate, deciduous. Petioles to +2mm long, pubescent, concealing next season buds. Blades to +8cm long, +6cm broad, elliptic to obovate, entire, lanose at anthesis, becoming glabrous with age.
Inflorescence - Typically 2-3 in a terminal cluster, appearing with the new leaves. Pedicels to 3mm long, glabrous.
Flowers - Floral tube 9-10mm long, greenish-yellow, glabrous. Stamens 8, exserted, adnate in the upper half of the corolla tube. Filaments to 3mm long, glabrous, brownish. Anthers orange, .6mm long. Ovary superior, green, ovoid, glabrous, 2.1mm long, 1.2mm i diameter, with a single ovule. Style glabrous, well exserted, 1cm long, white. Stigma small, purplish. Drupes green to purple, to 8mm long.
Flowering - March - April.
Habitat - Low wet woods, streambanks, rich wooded slopes.
Origin - Native to U.S.
Other info. - Dirca palustris can be found mainly in the Ozark region of Missouri but is also found in a few northern counties. This species is extremely slow growing and Steyermark states that a plant with a trunk 5cm in diameter may be over 100 years old.
The plant has been cultivated for many years and was used extensively by natives in the U.S.
D. palustris is an emetic and can be toxic if used in large quantities. Some people are allergic to the bark. The fruit is believed to be a narcotic.
"palustris" means "growing in a swamp" and the plant does grow in moist to wet soil.
Stems - Woody shrub to 2m tall, freely branching. Twigs jointed, glabrous, expanding at nodes and buds, flexible. Each node typically with a small spur. Plants rarely found with stems over 6cm in diameter.
Leaves - Alternate, short-petiolate, deciduous. Petioles to +2mm long, pubescent, concealing next season buds. Blades to +8cm long, +6cm broad, elliptic to obovate, entire, lanose at anthesis, becoming glabrous with age.
Inflorescence - Typically 2-3 in a terminal cluster, appearing with the new leaves. Pedicels to 3mm long, glabrous.
Flowers - Floral tube 9-10mm long, greenish-yellow, glabrous. Stamens 8, exserted, adnate in the upper half of the corolla tube. Filaments to 3mm long, glabrous, brownish. Anthers orange, .6mm long. Ovary superior, green, ovoid, glabrous, 2.1mm long, 1.2mm i diameter, with a single ovule. Style glabrous, well exserted, 1cm long, white. Stigma small, purplish. Drupes green to purple, to 8mm long.
Flowering - March - April.
Habitat - Low wet woods, streambanks, rich wooded slopes.
Origin - Native to U.S.
Other info. - Dirca palustris can be found mainly in the Ozark region of Missouri but is also found in a few northern counties. This species is extremely slow growing and Steyermark states that a plant with a trunk 5cm in diameter may be over 100 years old.
The plant has been cultivated for many years and was used extensively by natives in the U.S.
D. palustris is an emetic and can be toxic if used in large quantities. Some people are allergic to the bark. The fruit is believed to be a narcotic.
"palustris" means "growing in a swamp" and the plant does grow in moist to wet soil.
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Dummer. ゛☀
2017年07月31日
Family - Brassicaceae
Stems - To 1m tall, herbaceous, stellate and simple pubescent, from thick taproot, branching above at inflorescence.
Leaves - Alternate, to 14cm long, 6-7cm broad, pinnate, dense stellate pubescent, reduced upward, sessile. Leaflets divided, those divisions again divided or lobed. Ultimate leaf divisions entire.
Inflorescence - Terminal racemes, compact in flower, much elongating in fruit to +30cm long.
Flowers - Petals 4, yellow, 3-4mm long, 1mm broad, spatulate, recurving slightly at apex. Stamens 6, exserted. Filaments to 4mm long. Ovary terete, 2-3mm long. Sepals 4, yellow-green, glabrous, 3mm long, -1mm broad, linear.
Fruit - Silique to 2.5cm long, 1mm in diameter, many seeded. Pedicel to 1.5cm long, filiform.
Flowering - May - July.
Habitat - Waste ground, disturbed sites, roadsides, railroads.
Origin - Native to Europe.
Other info. - D. sophia is becoming common in this state and others. I first found it in Florida. The plant is easy to ID in the field because of the much divided leaves, densely pubescent stems, and ascending long fruits. D. pinnata, a native species, looks similar but has shorter fruits, glandular pubescent stems, and leaves which are slightly less divided.
Stems - To 1m tall, herbaceous, stellate and simple pubescent, from thick taproot, branching above at inflorescence.
Leaves - Alternate, to 14cm long, 6-7cm broad, pinnate, dense stellate pubescent, reduced upward, sessile. Leaflets divided, those divisions again divided or lobed. Ultimate leaf divisions entire.
Inflorescence - Terminal racemes, compact in flower, much elongating in fruit to +30cm long.
Flowers - Petals 4, yellow, 3-4mm long, 1mm broad, spatulate, recurving slightly at apex. Stamens 6, exserted. Filaments to 4mm long. Ovary terete, 2-3mm long. Sepals 4, yellow-green, glabrous, 3mm long, -1mm broad, linear.
Fruit - Silique to 2.5cm long, 1mm in diameter, many seeded. Pedicel to 1.5cm long, filiform.
Flowering - May - July.
Habitat - Waste ground, disturbed sites, roadsides, railroads.
Origin - Native to Europe.
Other info. - D. sophia is becoming common in this state and others. I first found it in Florida. The plant is easy to ID in the field because of the much divided leaves, densely pubescent stems, and ascending long fruits. D. pinnata, a native species, looks similar but has shorter fruits, glandular pubescent stems, and leaves which are slightly less divided.
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Dummer. ゛☀
2017年07月31日
Family - Brassicaceae
Stems - To +70cm tall, herbaceous, erect, typically multiple from stout taproot, branching above, dense glandular pubescent.
Leaves - Alternate, sessile, to +15cm long, 6-7cm broad, reduced upward, pinnate to deeply pinnatifid, pubescence simple, forked, or branching, also glandular. Leaflets typically pinnatifid. Leaf rachis channeled above.
Inflorescence - Terminal raceme, very compact in flower, much elongating in fruit, to + 25cm long (tall). Flowers on short pedicels to 4mm long, typically glabrous. Pedicels elongating in fruit.
Flowers - Petals 4, yellow, -2mm long, 1mm broad, glabrous, spreading to recurving slightly at apex, obtuse at apex. Stamens 6. Filaments to 1.5mm long, yellow, glabrous. Anthers yellow, .2mm long. Ovary terete, subcylindric, 1mm long. Siliques to +/-1cm long, 2mm in diameter, subterete to 4-angled, many seeded. Seeds brown, 1mm in diameter. Fruiting pedicel to 1.5cm long.
Flowering - March - June.
Habitat - Waste ground, disturbed sites, open woods, prairies, glades, roadsides, railroads.
Origin - Native to U.S.
Other info. - This species is common in Missouri and can be found throughout the state. Another species, D. sophia (L.) Webb, which is introduced from Europe, is becoming common. The two can be distinguished by fruit size and leaf character.
I didn't get pics of the flowers of D. pinnata, but they are very close to those of D. sophia, so check out that page to see the flowers.
Stems - To +70cm tall, herbaceous, erect, typically multiple from stout taproot, branching above, dense glandular pubescent.
Leaves - Alternate, sessile, to +15cm long, 6-7cm broad, reduced upward, pinnate to deeply pinnatifid, pubescence simple, forked, or branching, also glandular. Leaflets typically pinnatifid. Leaf rachis channeled above.
Inflorescence - Terminal raceme, very compact in flower, much elongating in fruit, to + 25cm long (tall). Flowers on short pedicels to 4mm long, typically glabrous. Pedicels elongating in fruit.
Flowers - Petals 4, yellow, -2mm long, 1mm broad, glabrous, spreading to recurving slightly at apex, obtuse at apex. Stamens 6. Filaments to 1.5mm long, yellow, glabrous. Anthers yellow, .2mm long. Ovary terete, subcylindric, 1mm long. Siliques to +/-1cm long, 2mm in diameter, subterete to 4-angled, many seeded. Seeds brown, 1mm in diameter. Fruiting pedicel to 1.5cm long.
Flowering - March - June.
Habitat - Waste ground, disturbed sites, open woods, prairies, glades, roadsides, railroads.
Origin - Native to U.S.
Other info. - This species is common in Missouri and can be found throughout the state. Another species, D. sophia (L.) Webb, which is introduced from Europe, is becoming common. The two can be distinguished by fruit size and leaf character.
I didn't get pics of the flowers of D. pinnata, but they are very close to those of D. sophia, so check out that page to see the flowers.
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Dummer. ゛☀
2017年07月31日
Family - Fabaceae
Stems - To +30cm tall, erect, herbaceous, from a single large taproot, branching, densely antrorse pubescent, turning purple in strong sun, terete, single or multiple from the base.
Leaves - Alternate, short-petiolate. Petioles to 3mm long, antrorse pubescent. Blades to +7cm long, 1.5cm broad, with a single midrib, entire, blunt to acute at the apex, dull green above, grayish-green below, densely antrorse pubescent (pilose), rounded at the base. Lower leaves more elliptic than the upper.
Inflorescence - Racemes from the side of the stems in the internodes. Peduncle subtended by a large stipule which wings the stem. Stipule pubescent, colored as the leaves, tapering to the base, widest at the apex, pointed at the apices. The apices acute to acuminate, to 5-8mm long. Axis of inflorescence densely strigose. Pedicels short in flower, expanding in fruit to +7mm long, antrorse strigose. Pedicels with one linear-lanceolate bract at the base and one or two at the summit subtending the calyx. Bracts to 5-6mm long, +1mm broad.
Flowers - Corolla yellow, papilionaceous, glabrous, shorter than the calyx. Standard to +7mm broad, 7-8mm long. Wings yellow, free, to 7mm long. Keels green, connate, mostly glabrous but minutely pubescent on the basal (ventral) margin, upcurved and tapering at the apex. Stamens united into a green tube t 2.5mm long, the tube glabrous. Free portions of stamens white, +/-4mm long, glabrous. Anthers yellow, -1mm long. Style white and green, with some secund antrorse hairs, deflexed sharply. Ovary superior, glabrous, 4mm long, cylindric. Calyx accrescent, 5-lobed. Sepals subequal but the most dorsal two being the largest (to 9mm long, 2-3mm broad in flower), green, densely antrorse pubescent externally, glabrous internally, entire, with ciliate margins, linear-lanceolate to subulate. Fruits inflated, glabrous.
Flowering - May - September.
Habitat - Prairies, glades, open wooded slopes, sandy or rocky open ground, fields, railroads.
Origin - Native to U.S. and South and Central America.
Other info. - This little species can be found throughout most of Missouri but is mostly absent from the north-central portion of the state. The plant is simple to identify in the field because of its large stipules and yellow flowers. Steyermark wrote that the plant is toxic to horses.
Stems - To +30cm tall, erect, herbaceous, from a single large taproot, branching, densely antrorse pubescent, turning purple in strong sun, terete, single or multiple from the base.
Leaves - Alternate, short-petiolate. Petioles to 3mm long, antrorse pubescent. Blades to +7cm long, 1.5cm broad, with a single midrib, entire, blunt to acute at the apex, dull green above, grayish-green below, densely antrorse pubescent (pilose), rounded at the base. Lower leaves more elliptic than the upper.
Inflorescence - Racemes from the side of the stems in the internodes. Peduncle subtended by a large stipule which wings the stem. Stipule pubescent, colored as the leaves, tapering to the base, widest at the apex, pointed at the apices. The apices acute to acuminate, to 5-8mm long. Axis of inflorescence densely strigose. Pedicels short in flower, expanding in fruit to +7mm long, antrorse strigose. Pedicels with one linear-lanceolate bract at the base and one or two at the summit subtending the calyx. Bracts to 5-6mm long, +1mm broad.
Flowers - Corolla yellow, papilionaceous, glabrous, shorter than the calyx. Standard to +7mm broad, 7-8mm long. Wings yellow, free, to 7mm long. Keels green, connate, mostly glabrous but minutely pubescent on the basal (ventral) margin, upcurved and tapering at the apex. Stamens united into a green tube t 2.5mm long, the tube glabrous. Free portions of stamens white, +/-4mm long, glabrous. Anthers yellow, -1mm long. Style white and green, with some secund antrorse hairs, deflexed sharply. Ovary superior, glabrous, 4mm long, cylindric. Calyx accrescent, 5-lobed. Sepals subequal but the most dorsal two being the largest (to 9mm long, 2-3mm broad in flower), green, densely antrorse pubescent externally, glabrous internally, entire, with ciliate margins, linear-lanceolate to subulate. Fruits inflated, glabrous.
Flowering - May - September.
Habitat - Prairies, glades, open wooded slopes, sandy or rocky open ground, fields, railroads.
Origin - Native to U.S. and South and Central America.
Other info. - This little species can be found throughout most of Missouri but is mostly absent from the north-central portion of the state. The plant is simple to identify in the field because of its large stipules and yellow flowers. Steyermark wrote that the plant is toxic to horses.
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