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花园 (6)
动态 (3585)
Dummer. ゛☀
2017年07月25日
Dummer. ゛☀
Family - Primulaceae Stems - To +/-30cm tall, branching, decumbent, repent, or erect, herbaceous, 4-angled, glabrous to pubescent, sometimes rooting at the nodes.
Leaves - Opposite, entire, sessile, ovate, to 2cm long, 1.3cm broad, clasping or not, with brown speckles below, variously pubescent, margins somewhat tuberculate.
Inflorescence - Single flowers from leaf axils. Peduncles to 1.4cm long, glabrous. Flowers - Corolla orange-red, rarely bluish, to -1cm wide, rotate. Petals 5, united at base and forming very short tube, 4mm long, 3-3.5mm broad, broadly ovate, broadly elliptic, or orbicular. Stamens 5, adnate at base of petals. Filaments purple, 2mm long, pubescent with purple multicellular hairs. Anthers yellow, .5mm long. Style single. Calyx with very short tube(-1mm long), 5-lobed. Lobes lanceolate, 4mm long, with scarious margins, keeled at midvein.
Flowering - May - September. Habitat - Roadsides, pastures, waste ground, disturbed sites. Typically in moist soil. Origin - Native to Eurasia. Other info. - This small species can be found mainly in the southern half of Missouri. The plant is easy tp identify becasue of its sessile, opposite leaves, orange-red flowers, and globose fruits. The fruits of this species are globose, circumscissile capsules which contain many tiny seeds. Steyermark lists two forms for the state. Form arvensis, shown above, has a red-orange corolla, and form caerulea has a blue corolla. The latter form is much less common but much more striking in my opinion. If untouched, the plant can form mats, since it sometimes roots at the nodes.
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Dummer. ゛☀
2017年07月25日
Dummer. ゛☀
Family - Hippocastanaceae Stems - Woody, to 4m. Tree-like with single trunk or shrub-like with multiple stems. Leaves - Opposite, petiolate, palmately compound with 5 leaflets. Leaflets oblanceolate to obovate, acute to acuminate, toothed, glabrous to sparsely above and below. Petioles reddish, glabrous to somewhat pubescent. Inflorescence - Terminal panicle to 25cm tall.
Flowers - Corolla red. Petals 4, unequal. Styles long protruding from corolla. Stamens included or slightly longer than corolla.

Fruits - Smooth, punctate, slightly longer than broad, to 5cm in diameter. Flowering - April - June. Habitat - Slopes, rich woods, streambanks, also cultivated. Origin - Native to southeastern U.S., found wild in southeastern Missouri and cultivated throughout the state. Other info. - This is a striking plant and one of the first "trees" to bloom in spring. It is toxic if eaten. The plant is simple to identify in the field becasue of its red flowers and palmately divided leaves.
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Dummer. ゛☀
2017年07月25日
Dummer. ゛☀
Family - Fabaceae Stems - Trailing and climbing, appearing glabrous but with sparse antrorse strigose hairs, winged from decurrent leaf (stipule) tissue, hollow, herbaceous, to +1m long.
Leaves - Alternate, stipulate, even-pinnate. Stipules to 6mm long, coarsely dentate, sparse appressed pubescent below and on margins, often with a purplish spot below. Leaflets subopposite, 5-6 pairs per leaf on upper leaves, on short petiolules, (to -1mm long), entire, truncate and mucronate at apex, pubescent below, mostly glabrous above, linear-oblong to elliptic-oblong or obovate(on lowest leaves), to 1.7cm long, 5-6mm broad. Margins ciliate. Tendril terminating the leaf branching.
Inflorescence - One or two flowers from leaf axils. Pedicels -1mm long, pubescent. Pedicel connected to ventral half of calyx tube. Flowers - Corolla pinkish. Standard to 1.4cm long, 6-7mm broad but often folded, glabrous, purplish-pink, whitish at base. Wings adnate to keels, purplish-pink at apex. Keels connate apically. Stamens diadelphous, the tube glabrous and white. Anthers yellowish, .2-.3mm long. Ovary green, papillate, 7-8mm long, compressed. Style short, 1.1mm long, green, glabrous except at stigma. Stigma subtended by floccose tuft of hairs. Fruit nearly black at maturity, +2cm long, slightly compressed. Calyx tube 5-6mm long, 2-3mm in diameter, appressed pubescent, 5-lobed. Lobes to +3mm long, attenuate.
Flowering - April - August. Habitat - Waste ground, disturbed sites, grassy fields, railroads, roadsides. Origin - Native to Europe. Other info. - This small bean is becoming quite well established in Missouri and other portions of North America. The plant grows rapidly from seed and should not be willingly spread, as it is introduced.
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Dummer. ゛☀
2017年07月24日
Dummer. ゛☀
Family - Fabaceae Stems - Erect, hollow, herbaceous, antrorse pubescent, slightly winged from decurrent leaf tissue, multiple from base, branching. Leaves - Alternate, stipulate, even-pinnate. Stipules narrowly ovate, to 7mm long, 3mm broad, acute, antrorse pubescent. Leaflets alternate, short petiolulate (petiolules to 1mm long), linear-oblong to narrowly ovate, blunt to emarginate at apex, to 1.5cm long, 6mm broad, entire, rounded at the base, mostly glabrous above except at base, antrorse pubescent below. Terminal tendril branching, pilose.
Inflorescence - Axillary peduncullate racemes to 8cm long. Rachis pilose. Pedicels to 1mm long. Flowers secund, +/-14 per raceme.
Flowers - Corolla pale pink, 7-8mm long, 4-5mm broad, glabrous. Wings and keel petals adnate. Keel petals apically fused, with purple spots at apex. Stamens diadelphous. Anthers yellow-orange, .3mm long. Ovary green, glabrous, 3.5mm long, slightly compressed. Style upcurved, 1.1mm long, glabrous. Fruit highly compressed, 4-5mm broad, 2cm long, glabrous. Calyx weakly bilabiate, 2mm long, pilose (especially in ventral 1/2). Bottom lip 3-toothed. Teeth triangular, .7mm long. Upper lip shallowly 2-lobed.
Flowering - April - June. Habitat - Acid soils on rocky slopes, rocky woods, ridges, streambanks. Origin - Native to U.S. Other info. - This is a small plant which is common in the Ozark region of Missouri. This plant is smaller and erect than most other members of the genus in the state. Because the flowers are small, the plant is frequently overlooked.
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Dummer. ゛☀
2017年07月24日
Dummer. ゛☀
Family - Asteraceae Stems - To +1.5m tall, herbaceous, from a taproot, typically single from the base, simple below, branched near apex, erect, stout, green but becoming purple in full sun, velutinous, (the hairs whitish to ferruginous or purplish and multicellular). ciliolate.
Leaves - Alternate, short-petiolate to subsessile. Petioles to +/-7mm long, velutinous. Blades variable, from lanceolate to ovate or oblong, serrate, acute to acuminate, slightly scabrous above, velutinous below (and often bluish-green in color), with many small teardrop-shaped granules below, to 15cm long, 8-9cm broad. The serrations of the margins often with a minute whitish apex. Veins of the leaf blade are impressed adaxially and expressed abaxially.
Inflorescence - Dense cymose arrangement of flower heads. Peduncles velutinous, to 2cm long. Involucre - 7-8mm long (tall), 5-6mm in diameter. Phyllaries imbricate, green with purple margins and midrib, acuminate, with arachnoid pubescence externally, glabrous internally, to 6mm long, 2-3mm broad. The tips of the phyllaries typically spreading but sometimes appressed. Margins often fimbriate- Ray flowers - Absent. Disk flowers - Corolla deep pink, 5-lobed, glabrous. Tube to 1.2cm long. Lobes to 3mm long, recurved, glabrous, linear. Stamens 5, adnate in upper 1/3 of corolla tube. Filaments white, glabrous. Anthers yellowish, connate around style, partially to fully exserted, to 3mm long. Style pinkish-white, well exserted beyond corolla and anthers, bifurcate, (the tips recurved). Achenes white in flower, to 2mm long, slightly compressed, tuberculate, pubescent, 4-sided, 8-ribbed. Pappus of multiple capillary bristles to 7mm long and short scales to .5mm long. Bristles brown, barbellate. Receptacle flat, naked.
Flowering - May - September. Habitat - Fields, prairies, rocky woods, glades, meadows, waste ground, pastures, thickets, roadsides, railroads. Origin - Native to U.S. Other info. - This striking species is found throughout Missouri. The plant is common in the habitats listed above. This and other species of Vernonia can be fairly variable and sometimes difficult to ID. Many of the plants in this genus form hybrids and thus make ID even more of a challenge. V. baldwinii grows well from seed and should be used more in cultivation. Flying insects are very fond of the flowers. Steyermark breaks this species down into different varieties and forms. I won't go into those here as many of these integrate and are probably not valid.
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Dummer. ゛☀
2017年07月24日
Dummer. ゛☀
Family - Fabaceae Stems - Typically sprawling to erect or ascending, to +60cm tall, herbaceous, glabrous to villous or hirsute, branching, multiple from base, purplish below.
Leaves - Alternate, trifoliolate, petiolate, stipulate. Stipules to +2cm long, with long bristle tip (to 6mm), striate-nerved for bottom 2/3 and reticulate-nerved for top 1/3, sparsely hirsute. Petiole sparse hirsute, +/-10cm long. Leaflets lanceolate to broadly ovate, entire to serrulate, rounded to emarginate at apex, 1-7cm long, 1-4cm broad, typically sericeous on both surfaces but sometimes glabrous above, with light-colored "V" in center. Petiolules to +/-1.2mm long or absent. Inflorescence - Terminal globose capitate cluster of 20-100 flowers. Flowers sessile. Peduncles to 2cm long, hirsute, subtended by reduced leaves (or flower heads sessile).
Flowers - Corolla papilionaceous, pink to rose (rarely white), glabrous. Standard to 1cm long, 3-4mm broad. Stamens diadelphous. Style to 7mm long, glabrous. Calyx weakly bilabiate to 5-lobed, tube to 3.5mm long, -2mm in diameter, whitish, sparse hirsute. Lobes green, with one longer and larger than the other four. Larger lobe (the middle lobe of the bottom lip) to 5mm long. Shorter lobes to 3mm long. All lobes linear, ciliate-margined, pubescent, floccose between lobes. Legumes to 2mm long, 1-2 seeded, brownish-yellow.
Flowering - April - September. Habitat - Waste ground, disturbed sites, fields, roadsides, railroads. Origin - Native to Europe. Other info. - If you live in Missouri you have seen this plant. This introduced species is one the most common plants in this state. It thrives in waste areas and forms large clumps. The large pink flower heads and distinctly marked leaflets are unmistakable. Steyermark divides the species up into different varieties and forms depending on leaflet size, plant height, and flower color, but I won't go into those here.
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Dummer. ゛☀
2017年07月24日
Dummer. ゛☀
Family - Portulacaceae Stems - To +5cm but typically less, from thick rhizomes. Flowering scape to +15cm tall, 1mm in diameter, purplish-brown, glabrous. Leaves - Alternate, in a basal rosette, terete, glabrous, succulent, to 7cm long, 3mm in diameter.
Inflorescence - Few flowers terminating scape, cymose. Each division of inflorescence subtended by pair of tiny scarious bracts to 1mm long. Pedicels 5-6mm long, glabrous, expanded beneath calyx.
Flowers - Petals 5, pinkish-rose, +/-1.5cm long, ovate to oblanceolate, mucronate, glabrous. Stamens +30. Filaments pinkish, glabrous, +/-7mm long. Anthers yellow, 1-1.5mm long. Style 1.2cm long, glabrous, pinkish. Stigma capitate. Ovary green, glabrous, ovoid, 2mm long. Sepals 2, ovate, acute, 5mm long, 3mm broad, glabrous, with scarious margins. Fruit an ovoid capsule to +6mm long, partially surrounded by sepals. Fruit a valved capsule to 7mm long, +/-4mm in diameter. Seeds many.
Flowering - May - September. Habitat - Glades of limestone, granite or sandstone, bluffs. Origin - Native to U.S. Other info. - This is one of my favorite plants from this state. It is small yet provides a brilliant splash of color to the glade landscape. The plant favors level areas and does not take well on slopes. It can grow in areas that have seemingly no soil.
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Dummer. ゛☀
2017年07月24日
Dummer. ゛☀
Family - Fabaceae Stems - Vining, twining, herbaceous, retrorse pubescent, terete to slightly angled, often twisted, often purplish in strong sunlight.
Leaves - Alternate, trifoliolate, stipulate, stipellate, petiolate. Stipules spreading, triangular, 2-3mm long, striate-nerved, glabrous to strigose, entire. Petioles to +2cm long, sparse antrorse strigose, with a deep adaxial groove. Stiples on all leaflets ovate-triangular, entire, 1.2mm long, mostly glabrous. Petiolules of lateral leaflets 1-2mm long, pubescent adaxially. Petiolule of terminal leaflet 6-7mm long, pubescent as the petiole. Leaflets ovate to lance-ovate, 3-6cm long, .8-1.5cm broad, entire, subacute to rounded at the apex, sparse antrorse strigose on both surfaces, deep green above, light green abaxially. Margins antrorse strigose. Lateral leaflets typically oblique at the base. Inflorescence - Flowers 3-4 at the end of the peduncles and forming a false whorl. Peduncle axillary, angled, minutely winged, with very sparse retrorse strigose pubescence, to +/-9cm long. Pedicels .5-2mm long, retrorse pubescent. Bracts subtending the calyx ovate to ovate-lanceolate, 1mm long, .6mm broad, shorter than the calyx tube, rounded to subacute at the apex, glabrous adaxially, strigose abaxially.
Flowers - Corolla papilionaceous, pink. Standard pink, 1.5-1.9cm broad, 1.2cm tall, emarginate at the apex or not, glabrous. Wings pink at the apex, rounded with a short claw (to 2mm long), glabrous, 1cm long, 5mm broad, free from keels. Keels white but wine-purple at the apex, strongly deflexed and surrounding the fertile floral organs, glabrous externally, connate on lower margin. Stamens diadelphous, the tube white and glabrous, deflexed and connate around the style. Free portions of stamens 5-6mm long. Anthers yellow, .7mm long. Ovary green, superior, 5-6mm long in flower, sericeous. Calyx bilabiate, green, sparse pubescent. Calyx tube to 3mm long, glabrous internally. Lower lip 3-lobed. Central lobe acuminate-triangular, 1-2mm long, with some strigose hairs near the apex. Lateral lobes acute. Upper lip with one lobe. Lobe rounded. All calyx lobes ciliolate-margined (use lens to see). Fruit antrorse strigose, slightly compressed, to 6cm long, many-seeded.
Flowering - July - October. Habitat - Low or upland woods, thickets, bluffs, along streams, wooded slopes, ridges. Origin - Native to U.S. Other info. - This species can be found mostly in the southern half of Missouri but it is also present in counties along the Mississippi and Missouri rivers. There are three species of Strophostyles in Missouri and the genus is easy to recognize because of the deflexed and curled keel petals of the corolla. Differentiating between the three species can be difficult at times and the differences in the bracts at the base of the calyx tube seem to be the best way distinguish between these species.
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Dummer. ゛☀
2017年07月24日
Dummer. ゛☀
Family - Fabaceae Stems - Thin, herbaceous, twining or trailing, from taproot, often with a reddish-purple tinge, retrorse pilose, single or multiple from base, branching, terete to angled or twisted.
Leaves - Alternate, (lowest few leaves may be opposite), petiolate, stipulate, trifoliolate. Stipules lanceolate, to +5mm long. Petiole to +6cm long, pubescent to strigose. Leaflets ovate to lance-ovate, often lobed, mucronate, entire, glabrous to sparse strigose, to +6cm long, +3cm broad. Lateral leaflets often unequally lobed near base, on petiolules to +/-5mm long. Terminal leaflet often more or less equally lobed at base, on petiolule to +/-1cm long.
Inflorescence - Axillary compact pedunculate raceme. Raceme appearing capitate. Peduncles to 15cm long, retrorse pilose. Flowers 3-7 in raceme. Each flower subtended by small lanceolate-acuminate bract. Bracts to +/-3mm long, equaling or longer than the calyx tube. Flowers - Corolla papilionaceous, whitish pink or lilac and fading to a yellowish-pink. Standard to 1.4cm long, 1.2cm broad, glabrous. Keel petal lilac-pinkish at base, becoming purplish at apex, curved upward and backward and often resting against the standard. Stamens 10, diadelphous. Style, white, glabrous, curved like keel petal. Ovary terete, green. Calyx bilabiate, glabrous to sparse pubescent, often reddish-green. Upper lip single lobed(with two united teeth), acute, to +2.2mm long. Lower lip 3-lobed. Lateral lobes to 3mm long, acute to acuminate. Central lobe to +5mm long, acute to acuminate. Fruit to +8cm long, subterete, sparse appressed pubescent to glabrous, green (dark brown to black when mature), elastically dehiscent.
Flowering - June - October. Habitat - Thickets, rich woods, moist ground, roadsides, railroads. Origin - Native to U.S. Other info. - This is a frequent plant in Missouri. The flowers are easy to recognize because of the twisted keel petals. The leaves of the plant can be somewhat variable. As you may notice, the leaves in the first picture above are quite different from the leaves in the second picture. Some authors break the species apart into two different varieties based on the leaf shape and fruit size but I won't do that here.
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