文章
Dummer. ゛☀
2017年07月15日
Family - Fabaceae
Stems - To +/-1.5m tall, multiple from base, erect, fistulose, herbaceous, much branched, striate-nerved, glabrous or with a few sparse hairs on ridges above, green when young, becoming dark brown with age (mostly at the base).
Leaves - Alternate, bipinnately compound, stipulate, to 10cm long, 6-7cm broad. Stipules filiform, 5mm long. Typically 6-15 pinnae per leaf, with even number of leaflets on pinna. Small glands often at base of pinnae. Leaflets 3.5mm long, 1.5mm broad, oblique at base, linear-oblong, rounded at apex, glabrous, with strigillose margins.
Inflorescence - Axillary globose pedunculate cluster of many flowers. Peduncle to +/-4cm in flower, elongating in fruit, antrorse strigose.
Flowers - Petals 5, white, to 2mm long, glabrous. Calyx tube white, 1.1mm long, 5-lobed, glabrous. Lobes 1.1mm long, glabrous, acute. Stamens 5, white, glabrous, 5mm long, well exserted. Anthers yellow, .2-.3mm in diameter. Ovary 1mm long, greenish-white, glabrous. Style 4mm long, white, glabrous, well exserted. Fruits clusters of compressed, sickle-shaped (falcate) pod to +/-2cm long, 4-5mm broad, green when fresh, becoming dark brown at maturity, with +/-6 seeds.
Flowering - June - August.
Habitat - Roadsides, railroads, open slopes, pastures, prairies.
Origin - Native to U.S.
Other info. - This species can be found throughout much of Missouri but seems to be absent from the northeast corner of the state as well as the central Ozark region. The plant can be identified by its small, globose clusters of many flowers and its bipinnate leaves.
If you live in extreme Southwestern Missouri you might mistake this plant for Acacia angustissima (Mill.) Ktze., except for that the latter has many more stamens per flower giving the flowers clusters a much more dense look. A. angustissima also has very dark reddish-brown, woody stems and no glands on the leaf petioles.
Desmanthus is nutritionally very important, being high in protein and fatty acids.
Stems - To +/-1.5m tall, multiple from base, erect, fistulose, herbaceous, much branched, striate-nerved, glabrous or with a few sparse hairs on ridges above, green when young, becoming dark brown with age (mostly at the base).
Leaves - Alternate, bipinnately compound, stipulate, to 10cm long, 6-7cm broad. Stipules filiform, 5mm long. Typically 6-15 pinnae per leaf, with even number of leaflets on pinna. Small glands often at base of pinnae. Leaflets 3.5mm long, 1.5mm broad, oblique at base, linear-oblong, rounded at apex, glabrous, with strigillose margins.
Inflorescence - Axillary globose pedunculate cluster of many flowers. Peduncle to +/-4cm in flower, elongating in fruit, antrorse strigose.
Flowers - Petals 5, white, to 2mm long, glabrous. Calyx tube white, 1.1mm long, 5-lobed, glabrous. Lobes 1.1mm long, glabrous, acute. Stamens 5, white, glabrous, 5mm long, well exserted. Anthers yellow, .2-.3mm in diameter. Ovary 1mm long, greenish-white, glabrous. Style 4mm long, white, glabrous, well exserted. Fruits clusters of compressed, sickle-shaped (falcate) pod to +/-2cm long, 4-5mm broad, green when fresh, becoming dark brown at maturity, with +/-6 seeds.
Flowering - June - August.
Habitat - Roadsides, railroads, open slopes, pastures, prairies.
Origin - Native to U.S.
Other info. - This species can be found throughout much of Missouri but seems to be absent from the northeast corner of the state as well as the central Ozark region. The plant can be identified by its small, globose clusters of many flowers and its bipinnate leaves.
If you live in extreme Southwestern Missouri you might mistake this plant for Acacia angustissima (Mill.) Ktze., except for that the latter has many more stamens per flower giving the flowers clusters a much more dense look. A. angustissima also has very dark reddish-brown, woody stems and no glands on the leaf petioles.
Desmanthus is nutritionally very important, being high in protein and fatty acids.
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Dummer. ゛☀
2017年07月14日
Family - Euphorbiaceae
Stems - Herbaceous, erect, single from the base, from a taproot, branching in apical 1/2, stellate pubescent, to +/-30cm tall.
Leaves - Alternate, petiolate, stipulate. Stipules green, needlelike, fugacious, to 1.3mm long, possibly tipped by a small gland. Petioles stellate pubescent, with a shallow adaxial groove, to 2cm long. Blades to 5cm long, 2.5cm broad, lanceolate to lance-ovate, stellate pubescent (much more so abaxially), dull green adaxially, light green abaxially, serrate, blunt at the apex.
blade.
Inflorescence - Terminal, compact, androgynous racemes to 1.5cm tall(long). Peduncle densely stellate pubescent. Satminate flowers - Pedicel stellate pubescent, 1.2mm long, each flower subtended by a small needlelike bract. Bracts to 1mm long. Numerous glands present at the base of each pedicel. Pistillate flowers - Pedicel to .1 or .2mm long.
Flowers - Staminate flowers - Petals 5, all white, stellate pubescent, slightly exceeding the sepals, oblong-lanceolate. Stamens 10. Filaments white, glabrous, to 1.5mm long. Anthers pale yellow, .4mm broad. Sepals 5, ovate, to 1.2mm long, white, stellate pubescent. Pistillate flowers - Sepals 5, greenish, stellate pubescent externally (branches of the pubescence long and thin), glabrous internally, +/-2mm long in flower, accrescent, oblanceolate to spatulate. Ovary stellate pubescent, green, superior, 1mm long in flower, 3-locular (one seed per locule). Placentation axile. Styles 3, divided nearly to the base and appearing as 6, white, papillate, 2.2mm long.
Flowering - July - October.
Habitat - Prairies, open woods, waste ground, pastures, glades, roadsides, railroads.
Origin - Native to U.S.
Other info. - This species is found throughout most of Missouri but seems to be absent from the north-central portion of the state. This species is easy to ID because of its toothed leaves. No other wild species of Croton in Missouri has toothed leaves. The species epithet comes from the fact that the leaves typically have two glands at the base of each leaf blade.
Stems - Herbaceous, erect, single from the base, from a taproot, branching in apical 1/2, stellate pubescent, to +/-30cm tall.
Leaves - Alternate, petiolate, stipulate. Stipules green, needlelike, fugacious, to 1.3mm long, possibly tipped by a small gland. Petioles stellate pubescent, with a shallow adaxial groove, to 2cm long. Blades to 5cm long, 2.5cm broad, lanceolate to lance-ovate, stellate pubescent (much more so abaxially), dull green adaxially, light green abaxially, serrate, blunt at the apex.
blade.
Inflorescence - Terminal, compact, androgynous racemes to 1.5cm tall(long). Peduncle densely stellate pubescent. Satminate flowers - Pedicel stellate pubescent, 1.2mm long, each flower subtended by a small needlelike bract. Bracts to 1mm long. Numerous glands present at the base of each pedicel. Pistillate flowers - Pedicel to .1 or .2mm long.
Flowers - Staminate flowers - Petals 5, all white, stellate pubescent, slightly exceeding the sepals, oblong-lanceolate. Stamens 10. Filaments white, glabrous, to 1.5mm long. Anthers pale yellow, .4mm broad. Sepals 5, ovate, to 1.2mm long, white, stellate pubescent. Pistillate flowers - Sepals 5, greenish, stellate pubescent externally (branches of the pubescence long and thin), glabrous internally, +/-2mm long in flower, accrescent, oblanceolate to spatulate. Ovary stellate pubescent, green, superior, 1mm long in flower, 3-locular (one seed per locule). Placentation axile. Styles 3, divided nearly to the base and appearing as 6, white, papillate, 2.2mm long.
Flowering - July - October.
Habitat - Prairies, open woods, waste ground, pastures, glades, roadsides, railroads.
Origin - Native to U.S.
Other info. - This species is found throughout most of Missouri but seems to be absent from the north-central portion of the state. This species is easy to ID because of its toothed leaves. No other wild species of Croton in Missouri has toothed leaves. The species epithet comes from the fact that the leaves typically have two glands at the base of each leaf blade.
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Dummer. ゛☀
2017年07月14日
Family - Apiaceae
Stems - To 3m tall, herbaceous, green with purple or black spots, sometimes entirely purple, often glaucous, glabrous, erect, from large taproot.
Leaves - Alternate, large, to 40cm long, about as broad as long, ternate, glabrous, broadly ovate in outline. Leaflets pinnatifid. Lobes serrate.
Inflorescence - Multiple compound umbels terminating the stems. Umbels and umbellets subtended by attenuate bracts to 5mm long. Rays glabrous. Flowers +/-15 per umbellet.
Flowers - Petals 5, white, subequal but typically with one petal larger than the others, glabrous, to 1.2mm long, 1mm broad, cuneate at base. Apex of petal apiculate with the apiculus curving adaxially. Margins of petal folding slightly downward. Stamens 5, alternating with petals. Filaments to 1mm long, white, glabrous. Anthers pale yellow to whitish, .15mm broad. Stylopodium present, slightly flattened, greenish.
Flowering - May - August.
Habitat - Waste groung, disturbed sites, pastures, open fields, low ground, railroads, roadsides.
Origin - Native to Europe.
Other info. - Although this plant may smell like fennel (Foeniculum sp.) , or Finocchio in Italian, when bruised or crushed, it should not be eaten as it is very toxic.
No other species in the family has such large and divided leaves as C. maculatum, so the plant can be easily distinguished from a distance. It is a very common weed in Missouri.
Stems - To 3m tall, herbaceous, green with purple or black spots, sometimes entirely purple, often glaucous, glabrous, erect, from large taproot.
Leaves - Alternate, large, to 40cm long, about as broad as long, ternate, glabrous, broadly ovate in outline. Leaflets pinnatifid. Lobes serrate.
Inflorescence - Multiple compound umbels terminating the stems. Umbels and umbellets subtended by attenuate bracts to 5mm long. Rays glabrous. Flowers +/-15 per umbellet.
Flowers - Petals 5, white, subequal but typically with one petal larger than the others, glabrous, to 1.2mm long, 1mm broad, cuneate at base. Apex of petal apiculate with the apiculus curving adaxially. Margins of petal folding slightly downward. Stamens 5, alternating with petals. Filaments to 1mm long, white, glabrous. Anthers pale yellow to whitish, .15mm broad. Stylopodium present, slightly flattened, greenish.
Flowering - May - August.
Habitat - Waste groung, disturbed sites, pastures, open fields, low ground, railroads, roadsides.
Origin - Native to Europe.
Other info. - Although this plant may smell like fennel (Foeniculum sp.) , or Finocchio in Italian, when bruised or crushed, it should not be eaten as it is very toxic.
No other species in the family has such large and divided leaves as C. maculatum, so the plant can be easily distinguished from a distance. It is a very common weed in Missouri.
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Dummer. ゛☀
2017年07月14日
Family - Ranunculaceae
Stems - Flowering stems to +2m tall, erect, glabrous, glaucous, from a woody caudex, herbaceous, green but purple at the nodes.
Leaves - Basal and alternate, petiolate, glabrous, to 1m broad, -1m long, ternately divided, purple at the joints. Ultimate leaflets serrate, green adaxially, silvery-green abaxially, with a few hairs abaxially on the veins. Serrations of margin with a lighter green or yellowish apex. Veins of leaflets impressed adaxially. Leaves of the flowering stem reduced to bracts.
Inflorescence - Terminal and axillary racemes to +/-50cm long. Axis of the inflorescence tomentoulose. Pedicels to 6cm long in flower, slightly longer in fruit, whitish tomentose. Each pedicel subtended by a minute bract. Bracts attenuate, 1-3mm long.
Flowers - Apetalous, Asepalous, fetid. Stamens many, +/-100. Filaments white, filiform, glabrous, to 5mm long. Anthers white, 1mm long. Ovary superior, white, tomentose, obliquely ovoid, 2.5mm long in flower, unilocular, with +/-10 ovules. Style wanting, forming a slight beak in fruit. Seeds semicircular in shape.
Flowering - May - August.
Habitat - Low rocky woods, base of bluffs.
Origin - Native to U.S.
Other info. - This distinctive species can be found in the Ozark region of Missouri. The plant is easy to ID in the field because of its big leaves and long inflorescences. The plant also has a fowl odor, especially when in flower.
This species has many medicinal uses. Traditionally, a tincture of the plant was used for bronchitis, chorea, fevers, rheumatism, snakebites, and many other ailments. Modern medicine has found the plant useful for strengthening female reproductive organs in lab rats. The plant has also shown anti-inflammatory properties.
Stems - Flowering stems to +2m tall, erect, glabrous, glaucous, from a woody caudex, herbaceous, green but purple at the nodes.
Leaves - Basal and alternate, petiolate, glabrous, to 1m broad, -1m long, ternately divided, purple at the joints. Ultimate leaflets serrate, green adaxially, silvery-green abaxially, with a few hairs abaxially on the veins. Serrations of margin with a lighter green or yellowish apex. Veins of leaflets impressed adaxially. Leaves of the flowering stem reduced to bracts.
Inflorescence - Terminal and axillary racemes to +/-50cm long. Axis of the inflorescence tomentoulose. Pedicels to 6cm long in flower, slightly longer in fruit, whitish tomentose. Each pedicel subtended by a minute bract. Bracts attenuate, 1-3mm long.
Flowers - Apetalous, Asepalous, fetid. Stamens many, +/-100. Filaments white, filiform, glabrous, to 5mm long. Anthers white, 1mm long. Ovary superior, white, tomentose, obliquely ovoid, 2.5mm long in flower, unilocular, with +/-10 ovules. Style wanting, forming a slight beak in fruit. Seeds semicircular in shape.
Flowering - May - August.
Habitat - Low rocky woods, base of bluffs.
Origin - Native to U.S.
Other info. - This distinctive species can be found in the Ozark region of Missouri. The plant is easy to ID in the field because of its big leaves and long inflorescences. The plant also has a fowl odor, especially when in flower.
This species has many medicinal uses. Traditionally, a tincture of the plant was used for bronchitis, chorea, fevers, rheumatism, snakebites, and many other ailments. Modern medicine has found the plant useful for strengthening female reproductive organs in lab rats. The plant has also shown anti-inflammatory properties.
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Dummer. ゛☀
2017年07月14日
Family - Apiaceae
Stems - From a taproot, erect, single or multiple from the base, to +50cm tall, herbaceous, striate (green and reddish), with a slight carrot fragrance, terete, hispid-hirsute, simple to branching.
Leaves - Alternate, petiolate, bipinnately divided, hispid-hirsute. Petioles sheathing at the base, to 15cm long, with a shallow adaxial groove, hispid-hirsute. Blades to 7-8cm long, 5-6cm broad, ovate in outline. Divisions pinnatifid. Ultimate divisions 2-3mm long, 1-2mm broad, acute, elliptic-oblong, often with a reddish margin and a minute orange spot near the tip (use a lens to see).
Inflorescence - Axillary, loose, compound umbels of a few flowers. Rays +/-3 per umbel, angled, to +3cm long, sparse pubescent. Involucre of umbellet of +/-5 bracts. Bracts ovate to oblong, green, ciliate-margined (but otherwise glabrous), accrescent, to +2mm broad, +3mm long. Flowers +/-5 per umbellet, subsessile but pedicels expanding in fruit to +4mm long. Pedicels broadening at the apex, not a uniform width throughout their length.
Flowers - Petals 5, white, glabrous, orbicular, acute at the apex, spreading, to 1mm in diameter. Stamens 5, alternating with the petals. Filaments white, glabrous, .8mm long. Anthers globose, yellow, .3mm long. Styles 2, expanded at the base to conic stylopodia, .6mm long. Stigma translucent. Ovary inferior. Calyx tube green, glabrous, 1.5-2mm long in flower, accrescent, quickly expanding in fruit. Calyx lobes wanting. Fruits glabrous (or rarely with small hairs), to +5mm long, ribbed.
Flowering - March - May.
Habitat - Rocky open glades, fallow fields, waste ground, roadsides.
Origin - Native to U.S.
Other info. - This little species can be found in the southern half of Missouri. The plant is weedy in habit and is often overlooked because of this. It can be differentiated from the similar C. procumbens (L.) Crantz by its pedicels, which get wider toward the apex. The pedicels of C. procumbens have the same width throughout their length.
Steyermark breaks C. tainturieri into three varieties based on fruit characteristics. I will not go into those here.
Stems - From a taproot, erect, single or multiple from the base, to +50cm tall, herbaceous, striate (green and reddish), with a slight carrot fragrance, terete, hispid-hirsute, simple to branching.
Leaves - Alternate, petiolate, bipinnately divided, hispid-hirsute. Petioles sheathing at the base, to 15cm long, with a shallow adaxial groove, hispid-hirsute. Blades to 7-8cm long, 5-6cm broad, ovate in outline. Divisions pinnatifid. Ultimate divisions 2-3mm long, 1-2mm broad, acute, elliptic-oblong, often with a reddish margin and a minute orange spot near the tip (use a lens to see).
Inflorescence - Axillary, loose, compound umbels of a few flowers. Rays +/-3 per umbel, angled, to +3cm long, sparse pubescent. Involucre of umbellet of +/-5 bracts. Bracts ovate to oblong, green, ciliate-margined (but otherwise glabrous), accrescent, to +2mm broad, +3mm long. Flowers +/-5 per umbellet, subsessile but pedicels expanding in fruit to +4mm long. Pedicels broadening at the apex, not a uniform width throughout their length.
Flowers - Petals 5, white, glabrous, orbicular, acute at the apex, spreading, to 1mm in diameter. Stamens 5, alternating with the petals. Filaments white, glabrous, .8mm long. Anthers globose, yellow, .3mm long. Styles 2, expanded at the base to conic stylopodia, .6mm long. Stigma translucent. Ovary inferior. Calyx tube green, glabrous, 1.5-2mm long in flower, accrescent, quickly expanding in fruit. Calyx lobes wanting. Fruits glabrous (or rarely with small hairs), to +5mm long, ribbed.
Flowering - March - May.
Habitat - Rocky open glades, fallow fields, waste ground, roadsides.
Origin - Native to U.S.
Other info. - This little species can be found in the southern half of Missouri. The plant is weedy in habit and is often overlooked because of this. It can be differentiated from the similar C. procumbens (L.) Crantz by its pedicels, which get wider toward the apex. The pedicels of C. procumbens have the same width throughout their length.
Steyermark breaks C. tainturieri into three varieties based on fruit characteristics. I will not go into those here.
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Dummer. ゛☀
2017年07月14日
Family - Brassicaceae
Stems - To 30cm tall, erect, herbaceous, from a weak taproot, multiple from the base, green, purple in strong sun, branching, mostly glabrous but with a few retrorse or spreading hairs near the base, terete or angled.
Leaves - Basal leaves few, no rosette present, alternate, petiolate. The largest leaves to +10cm long, 3cm broad, pinnate, with 2-3 pairs of lateral leaflets. Terminal leaflet broader than long on the lowest leaves and becoming more narrow in upper leaves, typically somewhat 3-lobed. All leaflets glabrous, with 3 main veins from the base of the blade (veins visible abaxially). Upper leaves with more lateral leaflets than lower leaves. Leaflets oblanceolate to oblong, entire or with 1-2 lobes, blunt at the tip or with a minute mucro.
Inflorescence - Terminal raceme, compact in flower, quickly elongating in fruit, to +10cm long. Pedicels to 4mm long in flower, to 6mm long in fruit, ascending, glabrous. Axis of inflorescence glabrous.
Flowers - Petals 4, white, glabrous, spreading. Stamens 6, erect. Sepals 4, green, glabrous, with slightly scarious margins, to 1.7mm long, 1mm broad, cupped. Siliques to 2cm long, glabrous, terete, slightly beaked (the beak to 1mm long), many-seeded, elastically dehiscent, 2-valved, erect.
Flowering - March - July.
Habitat - Low wet woods, spring branches, base of moist bluffs.
Origin - Native to U.S.
Other info. - This little species can be found mostly in the lower 2/3 of Missouri in the habitats mentioned above. This species nd another, C. parviflora L., can be difficult to distinguish. The two plants grow in different habitats. C. pensylvanica grows in moist to wet soils of low areas and C. parviflora prefers drier soils of upland areas. Both plants can be eaten raw or cooked as greens.
Stems - To 30cm tall, erect, herbaceous, from a weak taproot, multiple from the base, green, purple in strong sun, branching, mostly glabrous but with a few retrorse or spreading hairs near the base, terete or angled.
Leaves - Basal leaves few, no rosette present, alternate, petiolate. The largest leaves to +10cm long, 3cm broad, pinnate, with 2-3 pairs of lateral leaflets. Terminal leaflet broader than long on the lowest leaves and becoming more narrow in upper leaves, typically somewhat 3-lobed. All leaflets glabrous, with 3 main veins from the base of the blade (veins visible abaxially). Upper leaves with more lateral leaflets than lower leaves. Leaflets oblanceolate to oblong, entire or with 1-2 lobes, blunt at the tip or with a minute mucro.
Inflorescence - Terminal raceme, compact in flower, quickly elongating in fruit, to +10cm long. Pedicels to 4mm long in flower, to 6mm long in fruit, ascending, glabrous. Axis of inflorescence glabrous.
Flowers - Petals 4, white, glabrous, spreading. Stamens 6, erect. Sepals 4, green, glabrous, with slightly scarious margins, to 1.7mm long, 1mm broad, cupped. Siliques to 2cm long, glabrous, terete, slightly beaked (the beak to 1mm long), many-seeded, elastically dehiscent, 2-valved, erect.
Flowering - March - July.
Habitat - Low wet woods, spring branches, base of moist bluffs.
Origin - Native to U.S.
Other info. - This little species can be found mostly in the lower 2/3 of Missouri in the habitats mentioned above. This species nd another, C. parviflora L., can be difficult to distinguish. The two plants grow in different habitats. C. pensylvanica grows in moist to wet soils of low areas and C. parviflora prefers drier soils of upland areas. Both plants can be eaten raw or cooked as greens.
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Dummer. ゛☀
2017年07月14日
Family - Brassicaceae
Stems - Glabrous, green or sometimes purplish in strong sun, to +40cm tall, terete, from a taproot, typically multiple from the base, erect, herbaceous, typically simple.
Flowering - March - April.
Habitat - Waste ground, disturbed sites, roadsides, lawns, fields, railroads.
Origin - Native to Europe.
Other info. - This introduced species can be found scattered in Missouri and the plant is becoming much more common.
Many members of the genus Cardamine can be hard to distinguish in the field. C. hirsuta can be identified by its many basal leaves, glabrous stems, and basal leaf petioles - which have hirsute hairs at the base. The basal leaves of this species dry and wilt as the plant matures so it is best identified while young.
C. hirsuta can flower when quite small. The picture below shows a tiny plant typical of how the species looks in an area that gets mowed or has poor soil.
Stems - Glabrous, green or sometimes purplish in strong sun, to +40cm tall, terete, from a taproot, typically multiple from the base, erect, herbaceous, typically simple.
Flowering - March - April.
Habitat - Waste ground, disturbed sites, roadsides, lawns, fields, railroads.
Origin - Native to Europe.
Other info. - This introduced species can be found scattered in Missouri and the plant is becoming much more common.
Many members of the genus Cardamine can be hard to distinguish in the field. C. hirsuta can be identified by its many basal leaves, glabrous stems, and basal leaf petioles - which have hirsute hairs at the base. The basal leaves of this species dry and wilt as the plant matures so it is best identified while young.
C. hirsuta can flower when quite small. The picture below shows a tiny plant typical of how the species looks in an area that gets mowed or has poor soil.
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Dummer. ゛☀
2017年07月14日
Family - Brassicaceae
Stems - To +40cm tall, erect, herbaceous, terete, hispidulous (mainly in the basal half), green, purplish at the base, simple to 1-2 branched in the apical half, from a short knotty rhizome.
Leaves - Alternate, petiolate below, becoming sessile above. Basal leaves on petioles to +8cm long. Petioles glabrous to hipidulous, flattened. Blades reniform to broadly ovate, glabrous, with wavy margins, +5cm long and broad. Cauline leaves becoming sessile or short petiolate, few (1-5), ovate to lanceolate, with a few coarse teeth, glabrous, light green below (abaxially), deep dull green above, with sparse ciliolate margins or not.
Flowers - Flowers not seen. Siliques to 3cm long, 2cm broad, glabrous, with a beak to 4mm long, 2-valved, with a small constriction between the seeds.
Flowering - March - April.
Habitat - Low or swampy woodlands.
Origin - Native to U.S.
Other info. - This attractive species can be found mainly in the northern half of Missouri in a handful of counties. The plant can be identified by its reniform basal leaf blades, few, sessile or nearly sessile cauline leaves, and big flowers. The flowers are typically purple but the plants photographed in Columbia, MO., had white flowers.
Stems - To +40cm tall, erect, herbaceous, terete, hispidulous (mainly in the basal half), green, purplish at the base, simple to 1-2 branched in the apical half, from a short knotty rhizome.
Leaves - Alternate, petiolate below, becoming sessile above. Basal leaves on petioles to +8cm long. Petioles glabrous to hipidulous, flattened. Blades reniform to broadly ovate, glabrous, with wavy margins, +5cm long and broad. Cauline leaves becoming sessile or short petiolate, few (1-5), ovate to lanceolate, with a few coarse teeth, glabrous, light green below (abaxially), deep dull green above, with sparse ciliolate margins or not.
Flowers - Flowers not seen. Siliques to 3cm long, 2cm broad, glabrous, with a beak to 4mm long, 2-valved, with a small constriction between the seeds.
Flowering - March - April.
Habitat - Low or swampy woodlands.
Origin - Native to U.S.
Other info. - This attractive species can be found mainly in the northern half of Missouri in a handful of counties. The plant can be identified by its reniform basal leaf blades, few, sessile or nearly sessile cauline leaves, and big flowers. The flowers are typically purple but the plants photographed in Columbia, MO., had white flowers.
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Dummer. ゛☀
2017年07月14日
Family - Brassicaceae
Stems - Erect, herbaceous, from a knobby caudex and fibrous roots, glabrous to sparse hispidulous, green apically, purplish near the base, branching above or simple, to +40cm tall.
Leaves - Alternate. Basal leaves petiolate, typically purplish abaxially. Petioles to +7cm long. Blades ovate, glabrous, with undulate margins, tapering at the base or truncate, to 5cm long, 2.5-3cm broad. Cauline leaves becoming sessile or short petiolate, with a few coarse teeth or entire, lanceolate to oblong-lanceolate.
Flowers - Petals 4, tapering to the base, to +1.2cm long, 4-5mm broad, white, glabrous, rounded at the apex. Stamens 6, erect. Filaments white, 5-6mm long. Anthers 1.3mm long, pale yellow. Ovary terete, 5mm long, glabrous, yellow-green. Style 1.2mm long. Stigma capitate. Sepals 4, to 4mm long, 1.5mm broad, green, glabrous, with slightly involute margins, oblong-lanceolate, with scarious margins, erect.
Flowering - March - June.
Habitat - Low wet woods, spring branches, wet meadows, pond margins, moist ledges of bluffs.
Origin - Native to U.S.
Other info. - This species can be found basically in the southeastern 1/2 of Missouri. The plant likes to be in or near water and is easily identified by its rather large white flowers.
Traditionally the leaves of this species were eaten in salads and add a sharp peppery taste, much like fresh cabbage.
Stems - Erect, herbaceous, from a knobby caudex and fibrous roots, glabrous to sparse hispidulous, green apically, purplish near the base, branching above or simple, to +40cm tall.
Leaves - Alternate. Basal leaves petiolate, typically purplish abaxially. Petioles to +7cm long. Blades ovate, glabrous, with undulate margins, tapering at the base or truncate, to 5cm long, 2.5-3cm broad. Cauline leaves becoming sessile or short petiolate, with a few coarse teeth or entire, lanceolate to oblong-lanceolate.
Flowers - Petals 4, tapering to the base, to +1.2cm long, 4-5mm broad, white, glabrous, rounded at the apex. Stamens 6, erect. Filaments white, 5-6mm long. Anthers 1.3mm long, pale yellow. Ovary terete, 5mm long, glabrous, yellow-green. Style 1.2mm long. Stigma capitate. Sepals 4, to 4mm long, 1.5mm broad, green, glabrous, with slightly involute margins, oblong-lanceolate, with scarious margins, erect.
Flowering - March - June.
Habitat - Low wet woods, spring branches, wet meadows, pond margins, moist ledges of bluffs.
Origin - Native to U.S.
Other info. - This species can be found basically in the southeastern 1/2 of Missouri. The plant likes to be in or near water and is easily identified by its rather large white flowers.
Traditionally the leaves of this species were eaten in salads and add a sharp peppery taste, much like fresh cabbage.
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Dummer. ゛☀
2017年07月14日
Family - Liliaceae
Stems - Bulb. Scape to +50cm tall, 3-4mm in diameter, glabrous, single.
Leaves - Basal, linear, +/-1cm broad, +30cm long, glabrous, entire, dull green above, shiny deep green below.
Inflorescence - Indeterminate raceme terminating scape, 15-16cm long (tall), with +/-40 flowers. Flower pedicels subtended by thin bract to +1cm long.
Flowers - Perianth to 2cm broad, rotate, nectariferous. Pedicels to 1cm long, elongating in fruit, glabrous. Tepals to 1cm long, 3-5mm broad, linear-oblong, white with lilac tinge, glabrous. Stamens 6, borne at base of tepals. Filaments 6mm long, glabrous. Anthers yellow, 3mm long, 1.2mm broad. Ovary superior, glabrous, 3mm long, ovoid, with 3 locules, many seeded, placentation axile. Style 3mm long, glabrous, white. Stigma 3-lobed.
Flowering - April - May.
Habitat - Open woods, stream banks, glades, prairies, fields, roadsides.
Origin - Native to U.S.
Other info. - This is a very abundant plant throughout most of the state. It doesn't bloom for very long though so see it while you can.
The perianth is variable in color and I could have placed the plant in the blue flowers section of this site also. I think the perianth is normally more whitish than blue.
Stems - Bulb. Scape to +50cm tall, 3-4mm in diameter, glabrous, single.
Leaves - Basal, linear, +/-1cm broad, +30cm long, glabrous, entire, dull green above, shiny deep green below.
Inflorescence - Indeterminate raceme terminating scape, 15-16cm long (tall), with +/-40 flowers. Flower pedicels subtended by thin bract to +1cm long.
Flowers - Perianth to 2cm broad, rotate, nectariferous. Pedicels to 1cm long, elongating in fruit, glabrous. Tepals to 1cm long, 3-5mm broad, linear-oblong, white with lilac tinge, glabrous. Stamens 6, borne at base of tepals. Filaments 6mm long, glabrous. Anthers yellow, 3mm long, 1.2mm broad. Ovary superior, glabrous, 3mm long, ovoid, with 3 locules, many seeded, placentation axile. Style 3mm long, glabrous, white. Stigma 3-lobed.
Flowering - April - May.
Habitat - Open woods, stream banks, glades, prairies, fields, roadsides.
Origin - Native to U.S.
Other info. - This is a very abundant plant throughout most of the state. It doesn't bloom for very long though so see it while you can.
The perianth is variable in color and I could have placed the plant in the blue flowers section of this site also. I think the perianth is normally more whitish than blue.
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Dummer. ゛☀
2017年07月13日
Family - Araliaceae
Stems - Herbaceous, from a large taproot, to 20cm tall, erect, pubescent, green to purple.
Leaves - Ternately divided, purple at the nodes, petiolate. Petioles to +5cm long. Terminal leaflet with a longer petiolule than the lateral leaflets. Leaflets ovate, acuminate, serrate(sometimes double), oblique to cordate or truncate at the base, dull green and short pubescent above, silvery green and short pubescent(mostly on veins) below, to 20cm long, +/-13cm broad.
Inflorescence - Axillary thrysoid panicle of umbellets to +/-20cm long(tall), 6-7cm in diameter. Axis sparse pubescent. Some of the divisions of the inflorescence subtended by small linear bracts. Bracts to +/-3mm long. Umbellets with +/-10 flowers. Pedicels to 6mm long. Umbellets subtended by minute bracts to 2mm long.
Flowers - Petals 5, triangular, whitish, glabrous, 1.1mm long, spreading to recurved, to 1.5mm long. Stamens 5, alternating with the petals, erect. Filaments white, glabrous, 1.1mm long. Anthers whitish, .5mm long. Ovary 5-locular, inferior, ovule per locule. Styles very short, .5mm long, 5, joined at the base. Receptacle closed by an enlarged nectary. Hypanthium pubescent at the base but mostly glabrous, -1.3mm long, greenish-white. Sepals .1mm long, triangular. Drupes globose, glabrous, blackish, to 6mm in diameter.
Flowering - June - August.
Habitat - Rich wooded slopes, ravines, moist ledges and bluffs.
Origin - Native to U.S.
Other info. - This interesting species can be found in many parts of Missouri but seems to be absent from the Great Plains region. The plant grows wider than tall and is easily recognized while in flower.
Stems - Herbaceous, from a large taproot, to 20cm tall, erect, pubescent, green to purple.
Leaves - Ternately divided, purple at the nodes, petiolate. Petioles to +5cm long. Terminal leaflet with a longer petiolule than the lateral leaflets. Leaflets ovate, acuminate, serrate(sometimes double), oblique to cordate or truncate at the base, dull green and short pubescent above, silvery green and short pubescent(mostly on veins) below, to 20cm long, +/-13cm broad.
Inflorescence - Axillary thrysoid panicle of umbellets to +/-20cm long(tall), 6-7cm in diameter. Axis sparse pubescent. Some of the divisions of the inflorescence subtended by small linear bracts. Bracts to +/-3mm long. Umbellets with +/-10 flowers. Pedicels to 6mm long. Umbellets subtended by minute bracts to 2mm long.
Flowers - Petals 5, triangular, whitish, glabrous, 1.1mm long, spreading to recurved, to 1.5mm long. Stamens 5, alternating with the petals, erect. Filaments white, glabrous, 1.1mm long. Anthers whitish, .5mm long. Ovary 5-locular, inferior, ovule per locule. Styles very short, .5mm long, 5, joined at the base. Receptacle closed by an enlarged nectary. Hypanthium pubescent at the base but mostly glabrous, -1.3mm long, greenish-white. Sepals .1mm long, triangular. Drupes globose, glabrous, blackish, to 6mm in diameter.
Flowering - June - August.
Habitat - Rich wooded slopes, ravines, moist ledges and bluffs.
Origin - Native to U.S.
Other info. - This interesting species can be found in many parts of Missouri but seems to be absent from the Great Plains region. The plant grows wider than tall and is easily recognized while in flower.
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Dummer. ゛☀
2017年07月13日
Family - Brassicaceae
Stems - To 50cm tall, erect to decumbent, typically simple but also sometimes branching in upper 1/2, herbaceous, from a thin taproot or fibrous roots, purplish-green, fairly densely pubescent with branching and stellate hairs.
Leaves - Alternate. Basal leaves petiolate. Petioles to +2cm long. Blades coarsely and irregularly dentate, to +10cm long, +4cm broad, spatulate to broadly obovate, slightly pubescent with branching and stellate hairs. Cauline leaves sessile, auriculate-clasping, to +5cm long, +2cm broad, coarsely and irregularly dentate, densely stellate pubescent below, glabrous above, oblanceolate to broadly oblong, acute. Margins ciliolate.
Inflorescence - Terminal and axillary racemes, compact in flower, much elongated in fruit, to +20cm tall(long). Pedicels to 2m long in flower,(to 5mm in fruit), pubescent with simple and branching hairs.
Flowers - Petals 4, free, white, to 2.5mm long, 1mm broad, glabrous. Stamens 6. Filaments to 2mm long. Anthers yellow. Ovary longer than broad, terete, stellate pubescent. Sepals 4, free, 2mm long, 1mm broad, linear-subulate, brownish-green, sparsely stellate pubescent. Margins slightly lighter in color. Siliques terete, to 4cm long, stellate pubescent, spreading basically perpendicular to axis of inflorescence or ascending with maturity.
Flowering - April - June.
Habitat - Moist ground along streams, low woods, and bluffs.
Origin - Native to U.S.
Other info. - According to Steyermark there are two varieties of this species in Missouri. Variety Shortii has pubescent ovaries and fruit. Variety phalacarpa (M. Hopkins) Steyerm. has glabrous fruits and ovaries. Both varieties are fairly common in the state.
Stems - To 50cm tall, erect to decumbent, typically simple but also sometimes branching in upper 1/2, herbaceous, from a thin taproot or fibrous roots, purplish-green, fairly densely pubescent with branching and stellate hairs.
Leaves - Alternate. Basal leaves petiolate. Petioles to +2cm long. Blades coarsely and irregularly dentate, to +10cm long, +4cm broad, spatulate to broadly obovate, slightly pubescent with branching and stellate hairs. Cauline leaves sessile, auriculate-clasping, to +5cm long, +2cm broad, coarsely and irregularly dentate, densely stellate pubescent below, glabrous above, oblanceolate to broadly oblong, acute. Margins ciliolate.
Inflorescence - Terminal and axillary racemes, compact in flower, much elongated in fruit, to +20cm tall(long). Pedicels to 2m long in flower,(to 5mm in fruit), pubescent with simple and branching hairs.
Flowers - Petals 4, free, white, to 2.5mm long, 1mm broad, glabrous. Stamens 6. Filaments to 2mm long. Anthers yellow. Ovary longer than broad, terete, stellate pubescent. Sepals 4, free, 2mm long, 1mm broad, linear-subulate, brownish-green, sparsely stellate pubescent. Margins slightly lighter in color. Siliques terete, to 4cm long, stellate pubescent, spreading basically perpendicular to axis of inflorescence or ascending with maturity.
Flowering - April - June.
Habitat - Moist ground along streams, low woods, and bluffs.
Origin - Native to U.S.
Other info. - According to Steyermark there are two varieties of this species in Missouri. Variety Shortii has pubescent ovaries and fruit. Variety phalacarpa (M. Hopkins) Steyerm. has glabrous fruits and ovaries. Both varieties are fairly common in the state.
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Dummer. ゛☀
2017年07月13日
Family - Brassicaceae
Stems - To +/-60cm tall, erect, herbaceous, glabrous or hairy, from a taproot, typically single from the base, typically simple except in the inflorescence, terete, green but becoming purple in strong sun.
Leaves - Basal leaves in a dense rosette, lowest of the rosette leaves spatulate, petiolate (blade tissue decurrent on the petiole), with toothed (dentate-serrate) margins, glabrous. Other leaves of the rosette lyrate-pinnatifid, petiolate, glabrous. Petioles typically purplish. Leaves of the rosette to +/-8cm long. Cauline leaves sessile, partially clasping, auriculate. Auricles pointed, +/-2mm long. Leaves coarse serrate, glabrous, linear-oblong, acute, green, with a single midrib, +/-4cm long, 7-8mm broad. All cauline leaves sub-equal in size.
Inflorescence - Terminal and axillary racemes to +/-15cm long (tall). Axis glabrous. Pedicels 3-9mm long in flower, elongating slightly in fruit to 1.5cm long, expanded at the apex, glabrous, terete.
Flowers - Petals 4, white, erect to slightly spreading, to 9mm long, 2mm broad, glabrous, tapering to the base, truncate at the apex, distinct. Stamens 6, 4 larger and 2 smaller, erect, distinct. Filaments to 5mm long, white, glabrous, terete. Anthers yellow, to 1.5mm long, sagittate. Ovary green, cylindric, 5mm long, .7mm in diameter, glabrous, terete. Style wanting. Stigma small. Sepals 4, erect, green, glabrous, slightly more pale at the base, lanceolate, acute, entire, 5-6mm long, 2mm broad, slightly cupped at the apex, with very thin or no scarious margins, distinct. Fruits terete to slightly compressed, many seeded, glabrous, falcate.
Flowering - April - June.
Habitat - Acid soils of rocky wooded slopes, ridges, sand hills.
Origin - Native to U.S.
Other info. - This species can be found mainly in the most southern counties of Missouri but can also be found in the counties of the eastern Ozark region. The plant can be glabrous (typically) or hairy and is identified by its somewhat clasping leaves, toothed leaf margins, and lyrate-pinnatifid basal rosette leaves. The white petals of the flowers are also larger than other species of Arabis in Missouri.
Stems - To +/-60cm tall, erect, herbaceous, glabrous or hairy, from a taproot, typically single from the base, typically simple except in the inflorescence, terete, green but becoming purple in strong sun.
Leaves - Basal leaves in a dense rosette, lowest of the rosette leaves spatulate, petiolate (blade tissue decurrent on the petiole), with toothed (dentate-serrate) margins, glabrous. Other leaves of the rosette lyrate-pinnatifid, petiolate, glabrous. Petioles typically purplish. Leaves of the rosette to +/-8cm long. Cauline leaves sessile, partially clasping, auriculate. Auricles pointed, +/-2mm long. Leaves coarse serrate, glabrous, linear-oblong, acute, green, with a single midrib, +/-4cm long, 7-8mm broad. All cauline leaves sub-equal in size.
Inflorescence - Terminal and axillary racemes to +/-15cm long (tall). Axis glabrous. Pedicels 3-9mm long in flower, elongating slightly in fruit to 1.5cm long, expanded at the apex, glabrous, terete.
Flowers - Petals 4, white, erect to slightly spreading, to 9mm long, 2mm broad, glabrous, tapering to the base, truncate at the apex, distinct. Stamens 6, 4 larger and 2 smaller, erect, distinct. Filaments to 5mm long, white, glabrous, terete. Anthers yellow, to 1.5mm long, sagittate. Ovary green, cylindric, 5mm long, .7mm in diameter, glabrous, terete. Style wanting. Stigma small. Sepals 4, erect, green, glabrous, slightly more pale at the base, lanceolate, acute, entire, 5-6mm long, 2mm broad, slightly cupped at the apex, with very thin or no scarious margins, distinct. Fruits terete to slightly compressed, many seeded, glabrous, falcate.
Flowering - April - June.
Habitat - Acid soils of rocky wooded slopes, ridges, sand hills.
Origin - Native to U.S.
Other info. - This species can be found mainly in the most southern counties of Missouri but can also be found in the counties of the eastern Ozark region. The plant can be glabrous (typically) or hairy and is identified by its somewhat clasping leaves, toothed leaf margins, and lyrate-pinnatifid basal rosette leaves. The white petals of the flowers are also larger than other species of Arabis in Missouri.
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Dummer. ゛☀
2017年07月13日
Family - Brassicaceae
Stems - To +35cm tall, freely branching, single or multiple from the base, hirsute basally, becoming glabrous apically, glaucous, from a taproot, green and often with some purple at the nodes.
Leaves - Alternate. Basal leaves in a rosette, spatulate, petiolate, entire or shallowly dentate, to +/-7cm long, 2cm broad, with forked trichomes above and below, rounded at the apex. Cauline leaves alternate, sessile, to 2.5cm long, 7-8mm broad, entire, ciliate-margined and with some forked trichomes above and below, oblong, rounded at the apex, few (2-6 per stem).
Inflorescence - Terminal and axillary racemes, compact in flower, elongated in fruit to +15cm long. Pedicels to 1cm long in fruit, filiform, glabrous and glaucous.
Flowers - Petals 4, white, glabrous, spatulate, to 4mm long, 1.2mm broad, rounded at the apex. Stamens 6, erect. Filaments white, glabrous, 2.5mm long. Anthers yellow, .3mm long. Ovary cylindric, green, glabrous, superior, 2mm long in fruit. Style wanting. Sepals 4, green, glabrous internally, with a few cilia externally, 1.5mm long, .8mm broad, green, cupped, subulate, with margins slightly scarious near the apex. Siliques to +/-1.5cm long, .8mm in diameter, mostly terete, glabrous, many-seeded, beaked. Beak to .5mm long.
Flowering - April - May.
Habitat - Open sandy ground, rocky open ground, fallow fields, pastures, waste ground, roadsides, railroads.
Origin - Native to Europe.
Other info. - This small species can be found mostly in the southern half of Missouri. The plant is fairly indistinct but can be identified by its thin siliques, small white flowers, basal rosette, and hairy (near the base) stems. A. thaliana is used widely in experiments on plants because it short-lived and grows very quickly.
Stems - To +35cm tall, freely branching, single or multiple from the base, hirsute basally, becoming glabrous apically, glaucous, from a taproot, green and often with some purple at the nodes.
Leaves - Alternate. Basal leaves in a rosette, spatulate, petiolate, entire or shallowly dentate, to +/-7cm long, 2cm broad, with forked trichomes above and below, rounded at the apex. Cauline leaves alternate, sessile, to 2.5cm long, 7-8mm broad, entire, ciliate-margined and with some forked trichomes above and below, oblong, rounded at the apex, few (2-6 per stem).
Inflorescence - Terminal and axillary racemes, compact in flower, elongated in fruit to +15cm long. Pedicels to 1cm long in fruit, filiform, glabrous and glaucous.
Flowers - Petals 4, white, glabrous, spatulate, to 4mm long, 1.2mm broad, rounded at the apex. Stamens 6, erect. Filaments white, glabrous, 2.5mm long. Anthers yellow, .3mm long. Ovary cylindric, green, glabrous, superior, 2mm long in fruit. Style wanting. Sepals 4, green, glabrous internally, with a few cilia externally, 1.5mm long, .8mm broad, green, cupped, subulate, with margins slightly scarious near the apex. Siliques to +/-1.5cm long, .8mm in diameter, mostly terete, glabrous, many-seeded, beaked. Beak to .5mm long.
Flowering - April - May.
Habitat - Open sandy ground, rocky open ground, fallow fields, pastures, waste ground, roadsides, railroads.
Origin - Native to Europe.
Other info. - This small species can be found mostly in the southern half of Missouri. The plant is fairly indistinct but can be identified by its thin siliques, small white flowers, basal rosette, and hairy (near the base) stems. A. thaliana is used widely in experiments on plants because it short-lived and grows very quickly.
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Dummer. ゛☀
2017年07月13日
Family - Asteraceae
Stems - Herbaceous, erect to ascending, from fibrous roots, multiple from the base, branching, arachnoid pubescent (less so near base), carinate at apex, green to red in strong sun.
Leaves - Alternate, pinnately divided. Divisions of leaf pinnatifid. Ultimate leaf divisions acute, minutely mucronate. Leaves to 5cm long, 2cm broad, sparse pubescent and punctate (use lens) adaxially, arachnoid pubescent below. Petiole with fimbriate divisions.
Inflorescence - Single pedunculate flower clusters terminating stems.
Involucre - 1.2cm in diameter, 4-5mm tall. Phyllaries in one or two series, slightly imbricated, to 5mm long, 2mm broad, scarious, with a green midvein, arachnoid pubescent externally, glabrous internally.
Ray flowers - Pistillate, fertile, +/-15 per head. Ligule white, -1.5cm long, 5-6mm broad, glabrous, 2-3-notched at apex, oblong. Corolla tube to 2mm long, greenish. Style bifurcate, exserted. Achene 1.5mm long in flower, light green, glabrous, truncate at base. Pappus none.
Disk flowers - Disk to 1.2cm broad, becoming globose with age. Corolla -3mm long, translucent at base, becoming yellow at apex, 5-lobed, expanded in apical 1/2. Lobes acute, to .6mm long, recurved. Stamens 5, adnate at base of corolla tube constriction. Filaments very short. Anthers yellow, included, 1.1mm long, connate around style. Style barely exserted beyond anthers, translucent-yellow. Stigmatic portion of style .5mm long. Achene translucent in flower, 1.3mm long, glabrous. Pappus none. Receptacle conic. Chaff thin, translucent, 3mm long, .4mm broad, slightly folded, glabrous, acuminate, linear.
Flowering - May - September.
Habitat - Fields, roadsides, railroads.
Origin - Native to Europe.
Other info. - This species can be found scattered throughout Missouri but is uncommon. It can be identified by its divided leaves and Chrysanthemum-like flower heads. The plant is sometimes cultivated. The flowers which occur on the plant in later months are much smaller than those of the early season.
Stems - Herbaceous, erect to ascending, from fibrous roots, multiple from the base, branching, arachnoid pubescent (less so near base), carinate at apex, green to red in strong sun.
Leaves - Alternate, pinnately divided. Divisions of leaf pinnatifid. Ultimate leaf divisions acute, minutely mucronate. Leaves to 5cm long, 2cm broad, sparse pubescent and punctate (use lens) adaxially, arachnoid pubescent below. Petiole with fimbriate divisions.
Inflorescence - Single pedunculate flower clusters terminating stems.
Involucre - 1.2cm in diameter, 4-5mm tall. Phyllaries in one or two series, slightly imbricated, to 5mm long, 2mm broad, scarious, with a green midvein, arachnoid pubescent externally, glabrous internally.
Ray flowers - Pistillate, fertile, +/-15 per head. Ligule white, -1.5cm long, 5-6mm broad, glabrous, 2-3-notched at apex, oblong. Corolla tube to 2mm long, greenish. Style bifurcate, exserted. Achene 1.5mm long in flower, light green, glabrous, truncate at base. Pappus none.
Disk flowers - Disk to 1.2cm broad, becoming globose with age. Corolla -3mm long, translucent at base, becoming yellow at apex, 5-lobed, expanded in apical 1/2. Lobes acute, to .6mm long, recurved. Stamens 5, adnate at base of corolla tube constriction. Filaments very short. Anthers yellow, included, 1.1mm long, connate around style. Style barely exserted beyond anthers, translucent-yellow. Stigmatic portion of style .5mm long. Achene translucent in flower, 1.3mm long, glabrous. Pappus none. Receptacle conic. Chaff thin, translucent, 3mm long, .4mm broad, slightly folded, glabrous, acuminate, linear.
Flowering - May - September.
Habitat - Fields, roadsides, railroads.
Origin - Native to Europe.
Other info. - This species can be found scattered throughout Missouri but is uncommon. It can be identified by its divided leaves and Chrysanthemum-like flower heads. The plant is sometimes cultivated. The flowers which occur on the plant in later months are much smaller than those of the early season.
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