成长记
Mider
2017年07月24日
我新添加了一棵“Haworthia pygmaea var. pygmaea Select,very rough leaf No.1”到我的“花园”
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求助
shirly mei
2017年07月20日
I tried propagating my Echeveria. Is it normal that I successfully propagate it even tho the leaf is damaged? And there's no sign of any root.
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Abby Gill：Let the leaf dry out and do not water it to encourage root growth.
Ueca：I say risky because more water could compromise the big leaf before roots can appear.
Ueca：Might be risky, but adding water should encourage root growth.
jedi4u：it's okay let the leaf fall apart..
文章
Dummer. ゛☀
2017年07月16日
Family - Boraginaceae
Stems - From a taproot and fibrous roots, multiple from the base, erect, herbaceous, green, hirsute, slightly angled from decurrent leaf tissue, to 50cm tall (in fruit), branching.
Leaves - Alternate. Basal leaves spatulate, to +/-6cm long, -2cm broad. Cauline leaves sessile, oblong to oblong-lanceolate, to 6cm long, 1.5cm broad. All leaves entire, hirsute, acute to rounded at the apex, green, with a single distinct midrib. Faint lateral venation anastomosing before the leaf margin.
Inflorescence - Terminal and lateral scorpoid racemes or cymes, compact in flower, very elongated in fruit. Pedicels short in flower, elongating to 3-4mm long in fruit, lanate. Axis of inflorescence lanate.
Flowers - Corolla white, funnelform, glabrous, slightly zygomorphic, 3mm broad, 3mm long, 5-lobed. Longest lobes to 1.2mm long, 1mm broad, truncate at apex. Fornices small, included in the throat of the corolla. Stamens 5, adnate above the base of the corolla tube. Filaments minute, -.1mm long. Anthers brownish, .5mm long. Ovary 4-lobed, subtended by a green nectary. Lobes green, glabrous, lenticular, to .3mm in diameter, with a slightly winged margin, expanding to +2mm in diameter in fruit. Style exserted from between ovary lobes, green, .7mm long, glabrous, included. Stigma bilobed. Calyx accrescent, densely uncinate pubescent (hirsute) externally, glabrous internally, 5-lobed, zygomorphic. Lobes attenuate, the longest to 2mm in flower (longer in fruit). Calyx tube to 2mm long in flower, longer in fruit.
Flowering - April - May.
Habitat - Fallow and cultivated fields, moist to dry woods, slopes, bottoms, roadsides, railroads.
Origin - Native to U.S.
Other info. - This species can be found throughout Missouri. The plant can be identified by its small white flowers, hirsute stems, and elongated inflorescences (in fruit).
Steyermark listed this species as a variety of M. virginica (L.) BSP. More modern taxonomy lumps M. virginica and M. macrosperma into the same species, M. verna Nutt. Regardless of what you call the plant, its annoying fruits will stick to your clothes and hair and are a chore to remove.
Stems - From a taproot and fibrous roots, multiple from the base, erect, herbaceous, green, hirsute, slightly angled from decurrent leaf tissue, to 50cm tall (in fruit), branching.
Leaves - Alternate. Basal leaves spatulate, to +/-6cm long, -2cm broad. Cauline leaves sessile, oblong to oblong-lanceolate, to 6cm long, 1.5cm broad. All leaves entire, hirsute, acute to rounded at the apex, green, with a single distinct midrib. Faint lateral venation anastomosing before the leaf margin.
Inflorescence - Terminal and lateral scorpoid racemes or cymes, compact in flower, very elongated in fruit. Pedicels short in flower, elongating to 3-4mm long in fruit, lanate. Axis of inflorescence lanate.
Flowers - Corolla white, funnelform, glabrous, slightly zygomorphic, 3mm broad, 3mm long, 5-lobed. Longest lobes to 1.2mm long, 1mm broad, truncate at apex. Fornices small, included in the throat of the corolla. Stamens 5, adnate above the base of the corolla tube. Filaments minute, -.1mm long. Anthers brownish, .5mm long. Ovary 4-lobed, subtended by a green nectary. Lobes green, glabrous, lenticular, to .3mm in diameter, with a slightly winged margin, expanding to +2mm in diameter in fruit. Style exserted from between ovary lobes, green, .7mm long, glabrous, included. Stigma bilobed. Calyx accrescent, densely uncinate pubescent (hirsute) externally, glabrous internally, 5-lobed, zygomorphic. Lobes attenuate, the longest to 2mm in flower (longer in fruit). Calyx tube to 2mm long in flower, longer in fruit.
Flowering - April - May.
Habitat - Fallow and cultivated fields, moist to dry woods, slopes, bottoms, roadsides, railroads.
Origin - Native to U.S.
Other info. - This species can be found throughout Missouri. The plant can be identified by its small white flowers, hirsute stems, and elongated inflorescences (in fruit).
Steyermark listed this species as a variety of M. virginica (L.) BSP. More modern taxonomy lumps M. virginica and M. macrosperma into the same species, M. verna Nutt. Regardless of what you call the plant, its annoying fruits will stick to your clothes and hair and are a chore to remove.
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文章
Dummer. ゛☀
2017年07月15日
Family - Ranunculaceae
Stems - To 25cm tall, from thick rhizome, hirsute, (at least in upper portions), herbaceous, with only two leaves.
Leaves - Two, alternate, double or triple serrate, pubescent above and below. Lower leaf petiolate, 5-11 palmately lobed, to +10cm broad, +8cm long. Petiole hirsute, to +2cm long. Upper leaf sessile, typically smaller than lower leaf.
Inflorescence - A single flower per plant, terminating stem.
Flowers - One, apetalous. Sepals 3, shed at anthesis. Stamens many(+50). Filaments white, glabrous, thicker at apex than base, to 1mm thick, 8-9mm long, curved. Anthers yellow, to 1mm long. Peduncle to +2cm long, thick, hirsute. Fruit a sub-globose cluster of red berries, to 1.3cm broad.
Flowering - April - May.
Habitat - Rich slopes, woods, ravines, thickets.
Origin - Native to U.S.
Other info. - This is a fairly common plant which is often dug for medicinal reasons. The plant contains different alkaloids and was used in folk medicine to combat everything from cancer to stomach aches. It is, however, toxic and should not be eaten. Please admire the plant for its beauty and don't pick it!
Stems - To 25cm tall, from thick rhizome, hirsute, (at least in upper portions), herbaceous, with only two leaves.
Leaves - Two, alternate, double or triple serrate, pubescent above and below. Lower leaf petiolate, 5-11 palmately lobed, to +10cm broad, +8cm long. Petiole hirsute, to +2cm long. Upper leaf sessile, typically smaller than lower leaf.
Inflorescence - A single flower per plant, terminating stem.
Flowers - One, apetalous. Sepals 3, shed at anthesis. Stamens many(+50). Filaments white, glabrous, thicker at apex than base, to 1mm thick, 8-9mm long, curved. Anthers yellow, to 1mm long. Peduncle to +2cm long, thick, hirsute. Fruit a sub-globose cluster of red berries, to 1.3cm broad.
Flowering - April - May.
Habitat - Rich slopes, woods, ravines, thickets.
Origin - Native to U.S.
Other info. - This is a fairly common plant which is often dug for medicinal reasons. The plant contains different alkaloids and was used in folk medicine to combat everything from cancer to stomach aches. It is, however, toxic and should not be eaten. Please admire the plant for its beauty and don't pick it!
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文章
Dummer. ゛☀
2017年07月14日
Family - Asteraceae
Stems - To +3m, glabrous, not completely winged by extended leaf tissue.
Leaves - Glabrous or slightly hairy above, hairy below, no spines on upper surface, alternate, larger below, reduced towards inflorescence. Margins toothed or lobed or not, flat, spiny.
Inflorescence - Single flower-head terminating each branch of the inflorescence.
Involucre - 2-3.5cm long(high). Bracts imbricate, tightly appressed, ending in spine-like prickle.
Flowers - All discoid, no rays present. Pappus of plumose bristles.
Flowering - July - October.
Habitat - Slopes, thickets, roadsides, railroads, open woodland.
Origin - Native to U.S.
Other info. - This form of C. altissimum is not often found in Missouri. The more common C. altissimum f. altissimum, with pink-rose flowers, is the plant most often seen. This plant can be found on the "Pink Flowers" page of this web site.
"altissimum" means "tall" or "the tallest" in Latin and this plant certainly is, being the tallest member of this genus in Missouri.
Stems - To +3m, glabrous, not completely winged by extended leaf tissue.
Leaves - Glabrous or slightly hairy above, hairy below, no spines on upper surface, alternate, larger below, reduced towards inflorescence. Margins toothed or lobed or not, flat, spiny.
Inflorescence - Single flower-head terminating each branch of the inflorescence.
Involucre - 2-3.5cm long(high). Bracts imbricate, tightly appressed, ending in spine-like prickle.
Flowers - All discoid, no rays present. Pappus of plumose bristles.
Flowering - July - October.
Habitat - Slopes, thickets, roadsides, railroads, open woodland.
Origin - Native to U.S.
Other info. - This form of C. altissimum is not often found in Missouri. The more common C. altissimum f. altissimum, with pink-rose flowers, is the plant most often seen. This plant can be found on the "Pink Flowers" page of this web site.
"altissimum" means "tall" or "the tallest" in Latin and this plant certainly is, being the tallest member of this genus in Missouri.
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Dummer. ゛☀
2017年07月14日
Family - Brassicaceae
Stems - To +40cm tall, erect, herbaceous, typically multiple from base, from thick taproot, typically simple but branching in inflorescence, densely retrorse puberulent below, sparse puberulent above, ribbed from decurrent leaf tissue.
Leaves - Alternate, sessile, oblong to lanceolate or ovate, to +6.5cm long, 3cm broad, reduced above, dentate to serrate, slightly undulate, clasping, auriculate, acute, densely pubescent. Auricles rounded or pointed, +/-7mm long.
Inflorescence - Multiple terminal racemes in a terminal corymbose arrangement. Pedicels filiform, expanding in fruit to +/-1.5cm long, glabrous.
Flowers - Petals 4, white, free, clawed, glabrous, typically spreading, to +/-3mm long. Limb rotund to broadly obovate, +1.5m in diameter. Stamens 6, erect to spreading. Filaments +/-3mm long, white, glabrous. Anthers yellow-orange, .5mm long. Nectaries present at base of stamens and surrounding ovary. Style 1mm long, yellowish-green. Stigma capitate, globose. Ovary superior, compressed, ovoid, yellowish-green, glabrous, 1.8mm long in flower. Sepals 4, free, whitish-green with broad scarious margins, to 2mm long, 2mm broad at apex, obovate to spatulate. Silicles to 3mm long, +3mm broad, cordate.
Flowering - April - June.
Habitat - Waste ground, slopes, roadsides, railroads.
Origin - Native to Europe.
Other info. - Still another introduced member of the Brassicaceae. This species is becoming common in Missouri but is not found throughout the state yet. The plant is easy to ID in the field because of its clasping dentate leaves and crowded, mostly flat-topped, inflorescences. Large colonies of this species can occur when the plants are left undisturbed.
Stems - To +40cm tall, erect, herbaceous, typically multiple from base, from thick taproot, typically simple but branching in inflorescence, densely retrorse puberulent below, sparse puberulent above, ribbed from decurrent leaf tissue.
Leaves - Alternate, sessile, oblong to lanceolate or ovate, to +6.5cm long, 3cm broad, reduced above, dentate to serrate, slightly undulate, clasping, auriculate, acute, densely pubescent. Auricles rounded or pointed, +/-7mm long.
Inflorescence - Multiple terminal racemes in a terminal corymbose arrangement. Pedicels filiform, expanding in fruit to +/-1.5cm long, glabrous.
Flowers - Petals 4, white, free, clawed, glabrous, typically spreading, to +/-3mm long. Limb rotund to broadly obovate, +1.5m in diameter. Stamens 6, erect to spreading. Filaments +/-3mm long, white, glabrous. Anthers yellow-orange, .5mm long. Nectaries present at base of stamens and surrounding ovary. Style 1mm long, yellowish-green. Stigma capitate, globose. Ovary superior, compressed, ovoid, yellowish-green, glabrous, 1.8mm long in flower. Sepals 4, free, whitish-green with broad scarious margins, to 2mm long, 2mm broad at apex, obovate to spatulate. Silicles to 3mm long, +3mm broad, cordate.
Flowering - April - June.
Habitat - Waste ground, slopes, roadsides, railroads.
Origin - Native to Europe.
Other info. - Still another introduced member of the Brassicaceae. This species is becoming common in Missouri but is not found throughout the state yet. The plant is easy to ID in the field because of its clasping dentate leaves and crowded, mostly flat-topped, inflorescences. Large colonies of this species can occur when the plants are left undisturbed.
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文章
Dummer. ゛☀
2017年07月13日
Family - Brassicaceae
Stems - To +50cm tall, erect, glabrous, glaucous, branching or simple, herbaceous, from a branched taproot, slightly angled from decurrent leaf midrib.
Leaves - Alternate, sessile, clasping, auriculate. Basal rosette of serrate to crenate leaves. Leaves purplish, (especially below), often pubescent. Cauline leaves linear-lanceolate, +/-10cm long, +/-1cm broad, glabrous, glaucous, acute, entire to shallow serrate and often undulate near the base. Auricles rounded to subacute, completely surrounding the stem on larger leaves.
Inflorescence - Terminal and axillary racemes, loose in flower, elongating in fruit. Pedicels glabrous, to -5mm in flower, elongating in fruit to -2cm, erect to spreading.
Flowers - Petals 4, white, glabrous, tapering to the base, blunt to truncate or wavy at the apex, to +/-5mm long, slightly exceeding or equaling the sepals. Stamens 6, 4 alike and 2 slightly smaller. Filaments to 5mm long, white, glabrous, erect. Anthers yellow, 1.2mm long. Ovary cylindric, green, glabrous, 3.4mm long, .5mm in diameter, 2-valved. Style very short, .1-.2mm long. Stigma capitate. Sepals 4, light green, glabrous, 4-5mm long, 1-1.3mm broad, rounded at apex, slightly cupped, erect. Siliques long, arcuate, terete, thin, with a minute beak, glabrous, to +/-7cm long, 2mm in diameter.
Flowering - April - June.
Habitat - Rocky woods and bluffs, low woods along streams.
Origin - Native to U.S.
Other info. - This indistinct plant is found mostly in the lower 1/2 of Missouri. The fruits of this species are long, thin, and curved and can help when trying to identify this species from others in the genus. Another species, A. missouriensis, is similar does not have glaucous stems.
Stems - To +50cm tall, erect, glabrous, glaucous, branching or simple, herbaceous, from a branched taproot, slightly angled from decurrent leaf midrib.
Leaves - Alternate, sessile, clasping, auriculate. Basal rosette of serrate to crenate leaves. Leaves purplish, (especially below), often pubescent. Cauline leaves linear-lanceolate, +/-10cm long, +/-1cm broad, glabrous, glaucous, acute, entire to shallow serrate and often undulate near the base. Auricles rounded to subacute, completely surrounding the stem on larger leaves.
Inflorescence - Terminal and axillary racemes, loose in flower, elongating in fruit. Pedicels glabrous, to -5mm in flower, elongating in fruit to -2cm, erect to spreading.
Flowers - Petals 4, white, glabrous, tapering to the base, blunt to truncate or wavy at the apex, to +/-5mm long, slightly exceeding or equaling the sepals. Stamens 6, 4 alike and 2 slightly smaller. Filaments to 5mm long, white, glabrous, erect. Anthers yellow, 1.2mm long. Ovary cylindric, green, glabrous, 3.4mm long, .5mm in diameter, 2-valved. Style very short, .1-.2mm long. Stigma capitate. Sepals 4, light green, glabrous, 4-5mm long, 1-1.3mm broad, rounded at apex, slightly cupped, erect. Siliques long, arcuate, terete, thin, with a minute beak, glabrous, to +/-7cm long, 2mm in diameter.
Flowering - April - June.
Habitat - Rocky woods and bluffs, low woods along streams.
Origin - Native to U.S.
Other info. - This indistinct plant is found mostly in the lower 1/2 of Missouri. The fruits of this species are long, thin, and curved and can help when trying to identify this species from others in the genus. Another species, A. missouriensis, is similar does not have glaucous stems.
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文章
Dummer. ゛☀
2017年07月13日
Family - Ranunculaceae
Stems - To +50cm tall, glabrous, from thick large rhizome, herbaceous, purplish at base.
Leaves - Alternate, twice ternately divided, glabrous, petiolate. Ultimate divisions serrate, with shallow lobes. Total leaf length(with petiole) +40cm long, +30cm broad.
Inflorescence - Axillary pedunculate raceme with +/-15 flowers, to 10cm long(tall). Peduncle to +15cm, glabrous. Pedicels thick, 1cm long, 1.5mm in diameter, thickened at apex, with antrorse pubescence. Small acuminate bract subtending each pedicel. Peduncle and pedicels enlarging and becoming red in fruit.
Flowers - Petaloid sepals 4-5, white, truncate to 3-notched at apex, 5mm long, 1.5mm broad. Stamens +20. Filaments to 6-7mm long, white, glabrous, slightly expanded(thickened) just below anthers. Anthers pale yellow, .6mm in diameter. Ovary superior, white, glabrous, 3mm long, 2mm broad, urceolate. Placentation parietal. Stigma capitate, 2-lobed.
Fruit - A white subglobose berry with +/-5 seeds. Berry with black dot at apex, to 1cm long, with vertical groove.
Flowering - May - June.
Habitat - Ravines, rich thick woods, north facing slopes, base of bluffs.
Origin - Native to U.S.
Other info. - The species name means "thick foot" and one look at the big rhizome of the plant shows that it is aptly named. The rhizome used to be used, and probably still is, to treat pain and bronchial troubles. The plant is toxic however and some people get violent gastric distress from ingesting it. The plant can cause skin irritation also.
The plant grows in such thickly wooded areas that my photos came out fuzzy due to the lack of light while shooting. The fruits of the plant are striking and add nice color to the deep forest floor in the early fall.
Stems - To +50cm tall, glabrous, from thick large rhizome, herbaceous, purplish at base.
Leaves - Alternate, twice ternately divided, glabrous, petiolate. Ultimate divisions serrate, with shallow lobes. Total leaf length(with petiole) +40cm long, +30cm broad.
Inflorescence - Axillary pedunculate raceme with +/-15 flowers, to 10cm long(tall). Peduncle to +15cm, glabrous. Pedicels thick, 1cm long, 1.5mm in diameter, thickened at apex, with antrorse pubescence. Small acuminate bract subtending each pedicel. Peduncle and pedicels enlarging and becoming red in fruit.
Flowers - Petaloid sepals 4-5, white, truncate to 3-notched at apex, 5mm long, 1.5mm broad. Stamens +20. Filaments to 6-7mm long, white, glabrous, slightly expanded(thickened) just below anthers. Anthers pale yellow, .6mm in diameter. Ovary superior, white, glabrous, 3mm long, 2mm broad, urceolate. Placentation parietal. Stigma capitate, 2-lobed.
Fruit - A white subglobose berry with +/-5 seeds. Berry with black dot at apex, to 1cm long, with vertical groove.
Flowering - May - June.
Habitat - Ravines, rich thick woods, north facing slopes, base of bluffs.
Origin - Native to U.S.
Other info. - The species name means "thick foot" and one look at the big rhizome of the plant shows that it is aptly named. The rhizome used to be used, and probably still is, to treat pain and bronchial troubles. The plant is toxic however and some people get violent gastric distress from ingesting it. The plant can cause skin irritation also.
The plant grows in such thickly wooded areas that my photos came out fuzzy due to the lack of light while shooting. The fruits of the plant are striking and add nice color to the deep forest floor in the early fall.
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文章
Dummer. ゛☀
2017年07月12日
Family - Staphyleaceae
Stems - Woody, multiple. A shrub to 11m tall. Freely suckering.
Leaves - Opposite, trifoliate. Leaflets elliptic, ovate or obovate, to 10cm long, 5cm broad, serrate, glabrous to sparsely pubescent above, pubescent below. Middle leaflet on long petiolule, lateral leaflets sessile or on short petiolules.
Inflorescence - Drooping, axillary or terminal racemose clusters.
Flowers - Corolla white, campanulate. Petals 5, to 1cm long, spatulate, 3-4mm broad at apex, glabrous, free. Stamens 5, slightly protruding past corolla, alternating with petals. Filaments 8mm long, pilose at base. Anthers yellow-orange, 1.2mm long. Ovary superior, pilose. Styles 4, 5mm long, glabrous. Calyx 5-lobed, campanulate. Lobes to 7mm long, 4mm broad, pale green to semi-transparent, erect, equaling or slightly shorter than petals. Fruits inflated, 3-sided, whitish, becoming brown when drying. Seeds 1-4.
Flowering - April - May. Fruits persistent into winter.
Habitat - Rich woods, thickets, shaded slopes, along streams.
Origin - Native to U.S.
Other info. - This is a common shrub which blooms quickly. The flowers don't last long but the fruits persist for some time.
This is an easy species to identify becasue of its opposite, trifoliate leaves, and inflated fruits. The plant can be found throughout Missouri but may be absent from the extreme southeast corner of the state.
Stems - Woody, multiple. A shrub to 11m tall. Freely suckering.
Leaves - Opposite, trifoliate. Leaflets elliptic, ovate or obovate, to 10cm long, 5cm broad, serrate, glabrous to sparsely pubescent above, pubescent below. Middle leaflet on long petiolule, lateral leaflets sessile or on short petiolules.
Inflorescence - Drooping, axillary or terminal racemose clusters.
Flowers - Corolla white, campanulate. Petals 5, to 1cm long, spatulate, 3-4mm broad at apex, glabrous, free. Stamens 5, slightly protruding past corolla, alternating with petals. Filaments 8mm long, pilose at base. Anthers yellow-orange, 1.2mm long. Ovary superior, pilose. Styles 4, 5mm long, glabrous. Calyx 5-lobed, campanulate. Lobes to 7mm long, 4mm broad, pale green to semi-transparent, erect, equaling or slightly shorter than petals. Fruits inflated, 3-sided, whitish, becoming brown when drying. Seeds 1-4.
Flowering - April - May. Fruits persistent into winter.
Habitat - Rich woods, thickets, shaded slopes, along streams.
Origin - Native to U.S.
Other info. - This is a common shrub which blooms quickly. The flowers don't last long but the fruits persist for some time.
This is an easy species to identify becasue of its opposite, trifoliate leaves, and inflated fruits. The plant can be found throughout Missouri but may be absent from the extreme southeast corner of the state.
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Dummer. ゛☀
2017年07月12日
Family - Lamiaceae
Stems - To 1m tall, erect, branching, 4-angled, herbaceous, from fibrous roots and horizontal rhizomes, glabrous except for tufts of hairs at nodes in leaf axils, with rounded angles, hollow, with single vertical groove on each flat side of the stem.
Leaves - Opposite, decussate, sessile or short-petiolate, pinnately lobed below, becoming nearly entire near tip of stem, to +/-12cm long, 7cm broad, glabrous or sometimes scabrous near base of blade, opposite leaves connected by a thin hairy strip of tissue which encircles the stem.
Inflorescence - Verticillasters in the upper 2/3 of the stem. Each cluster of a leaf axil with +/-20 flowers. Flowers sessile.
Flowers - Corolla whitish, to 3mm long, glabrous externally, with dense tufts of hairs near apex of tube internally, subequally 4-lobed. The lobes rounded, -1mm long. Stamens 2, exserted, adnate at apex of corolla tube. Filaments to 2mm long, white, glabrous. Anthers pale yellow or with a purplish tinge, .4mm broad. Style exserted, to 3mm long, white, glabrous, expanded slightly at base. Stigma 2-lobed, often with a purplish tinge. Ovary 4-lobed. The lobes deep purple with whitish glands at apex. Calyx green, glabrous, the tube to 1mm long, 5-lobed (weakly bilabiate). Lobes acuminate, to 1.3mm long, the lower 4 with minute teeth on their margins. The single upper lobe (tooth) shallowly notched at the apex.
Flowering - June - October.
Habitat - Moist to wet locations.
Origin - Native to U.S.
Other info. - This is a common plant along pond, lake, and stream margins. The plant typically has green stems but if grown in harsh conditions the stems will become reddish-brown. Although this plant is in the mint family it has no minty odor. The leaves and small white clusters of flowers make this species easy to ID in the field.
Stems - To 1m tall, erect, branching, 4-angled, herbaceous, from fibrous roots and horizontal rhizomes, glabrous except for tufts of hairs at nodes in leaf axils, with rounded angles, hollow, with single vertical groove on each flat side of the stem.
Leaves - Opposite, decussate, sessile or short-petiolate, pinnately lobed below, becoming nearly entire near tip of stem, to +/-12cm long, 7cm broad, glabrous or sometimes scabrous near base of blade, opposite leaves connected by a thin hairy strip of tissue which encircles the stem.
Inflorescence - Verticillasters in the upper 2/3 of the stem. Each cluster of a leaf axil with +/-20 flowers. Flowers sessile.
Flowers - Corolla whitish, to 3mm long, glabrous externally, with dense tufts of hairs near apex of tube internally, subequally 4-lobed. The lobes rounded, -1mm long. Stamens 2, exserted, adnate at apex of corolla tube. Filaments to 2mm long, white, glabrous. Anthers pale yellow or with a purplish tinge, .4mm broad. Style exserted, to 3mm long, white, glabrous, expanded slightly at base. Stigma 2-lobed, often with a purplish tinge. Ovary 4-lobed. The lobes deep purple with whitish glands at apex. Calyx green, glabrous, the tube to 1mm long, 5-lobed (weakly bilabiate). Lobes acuminate, to 1.3mm long, the lower 4 with minute teeth on their margins. The single upper lobe (tooth) shallowly notched at the apex.
Flowering - June - October.
Habitat - Moist to wet locations.
Origin - Native to U.S.
Other info. - This is a common plant along pond, lake, and stream margins. The plant typically has green stems but if grown in harsh conditions the stems will become reddish-brown. Although this plant is in the mint family it has no minty odor. The leaves and small white clusters of flowers make this species easy to ID in the field.
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Dummer. ゛☀
2017年07月11日
Family - Asclepiadaceae
Stems - To +/-60cm tall, erect, herbaceous, from rhizomes and fleshy roots, branching in upper 1/2, with short pubescence in vertical lines from between leaf bases. Internodes short.
Leaves - Sessile to short petiolate, (the petioles to -2mm long), linear, in whorls of 3-6 at each node, glabrous or with some pubescence, +/- 7cm long, 2-3mm broad, acute, with single prominent midrib. Margins revolute creating a terete effect.
Inflorescence - Axillary pedunculate umbels. Peduncles to +3cm long, pubescent. Flowers typically 10-20 per umbel. Pedicels purplish at base, 8-9mm long, pubescent. Typically 0-2 bracts present at the base of the umbels. Bracts linear and short.
Flowers - Petals greenish-white, purplish at apex, elliptic-oblong, 4-5mm long, 2mm broad, recurved with the tips slightly spreading, glabrous to minutely puberulent at the base internally,(use a lens to see). Hoods white, to 1.5mm long, glabrous. Horns white, 1.7mm long, loosely converging over anther column. Anther column greenish, white at apex, 2mm long. Pollinia 1.2mm long, translator deep purplish-brown. Pistils 2, glabrous, greenish, 2mm long. Follicles to 10cm long, 1cm broad.
Flowering - May - September.
Habitat - Prairies, pastures, open woods, roadsides, railroads.
Origin - Native to U.S.
Other info. - This attractive little species can be found throughout Missouri. Like most of the species in this family the plant is toxic. This is one of the most easily recognized members of the genus because of the thread-like, whorled leaves. Because it handles dry conditions very well, A. verticillata would make a fine garden specimen. Many flying insects are attracted to its flowers.
Stems - To +/-60cm tall, erect, herbaceous, from rhizomes and fleshy roots, branching in upper 1/2, with short pubescence in vertical lines from between leaf bases. Internodes short.
Leaves - Sessile to short petiolate, (the petioles to -2mm long), linear, in whorls of 3-6 at each node, glabrous or with some pubescence, +/- 7cm long, 2-3mm broad, acute, with single prominent midrib. Margins revolute creating a terete effect.
Inflorescence - Axillary pedunculate umbels. Peduncles to +3cm long, pubescent. Flowers typically 10-20 per umbel. Pedicels purplish at base, 8-9mm long, pubescent. Typically 0-2 bracts present at the base of the umbels. Bracts linear and short.
Flowers - Petals greenish-white, purplish at apex, elliptic-oblong, 4-5mm long, 2mm broad, recurved with the tips slightly spreading, glabrous to minutely puberulent at the base internally,(use a lens to see). Hoods white, to 1.5mm long, glabrous. Horns white, 1.7mm long, loosely converging over anther column. Anther column greenish, white at apex, 2mm long. Pollinia 1.2mm long, translator deep purplish-brown. Pistils 2, glabrous, greenish, 2mm long. Follicles to 10cm long, 1cm broad.
Flowering - May - September.
Habitat - Prairies, pastures, open woods, roadsides, railroads.
Origin - Native to U.S.
Other info. - This attractive little species can be found throughout Missouri. Like most of the species in this family the plant is toxic. This is one of the most easily recognized members of the genus because of the thread-like, whorled leaves. Because it handles dry conditions very well, A. verticillata would make a fine garden specimen. Many flying insects are attracted to its flowers.
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