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花园 (6)
动态 (3585)
Dummer. ゛☀
2017年07月12日
Dummer. ゛☀
Family - Lamiaceae Stems - Simple, erect, herbaceous, 4-angled, sparse to dense pilose on the angles, from rhizomes, fragrant. Hairs of the plant multicellular. Leaves - Opposite, short-petiolate, decussate. Petioles to 2mm long, ciliate=margined. Blades ovate to ovate-lanceolate, coarse-shallow serrate, acute, ciliate-margined, pubescent on both surfaces, with lateral veins anastomosing before the margin of the blade, to +7cm long, +4cm broad. Uppermost leaves subtending the inflorescence reduced to bracts.
Inflorescence - Single terminal capitate cluster of flowers per plant. Cluster subtended by small foliaceous bracts. Bracts to +/-1.5cm long, green or slightly pink or purple tinged. Flowers +/-50 per cluster, sessile.
Flowers - Corolla whitish with purple spots, bilabiate. Corolla tube to 1.3cm long, sparse glandular pubescent externally, pubescent internally. Lower lip single-lobed. The lobe to 1.5cm long, 6-7mm broad, mostly white but with purple spots internally, glabrous internally, glandular and pubescent externally, with an apical appendage. Appendage with 2 linear lobes. Upper lip single-lobes. Lobe thin, arching, to 1.4cm long, 2mm broad, simple and glandular pubescent externally, with the apex reflexed or not. Apex ciliate. Stamens 2, adnate at the apex of the corolla tube, slightly exserted from under the upper lip. Filaments white, glabrous, +1.5cm long. Anthers purplish-brown, 2.5mm long. Style filiform, +3cm long, glabrous, whitish to purple-tinged at the apex. Stigma 2-lobed. Lobes .6mm long. Ovary 4-lobed at the apex, green, glabrous, 1mm long and broad. Calyx tube to -1cm long in flower, -2mm in diameter, 13-ribbed, sparse pilose, 5-lobed. Lobes linear, needle-like, spreading, 2.5-3mm long in flower, ciliate. Flowering - April - June. Habitat - Rocky or dry open woods, borders of glades, railroads. Usually an acid substrata. Origin - Native to U.S. Other info. - This little species can be found in the southeastern half of Missouri and mostly in the Ozark region of the state. The plant is the earliest of the genus to flower in Missouri. It is also the smallest of the genus. The plant is easy to ID because of its big, whitish to pink, zygomorphic flowers. This species is very fragrant and a tea can be made from the leaves and flowers of the plant. Steyermark had this species listed as M. russeliana Nutt. but it has been determined that M. russeliana is a different species that occurs in states to the south of Missouri.
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Dummer. ゛☀
2017年07月12日
Dummer. ゛☀
Family - Aizoaceae Stems - Prostrate to ascending, multiple from base, glabrous, dichotomously branched, from branched taproot, with slightly swollen nodes.
Leaves - In whorls of 4 to 8, sessile or tapering to a short petiole, spatulate to narrowly oblanceolate, entire, glabrous, to 2cm long, +4mm broad, acute, with single prominent midvein.
Inflorescence - 1-5 pedicillate flowers from each leaf axil. Pedicels to +/-10mm long, glabrous, filiform. Flowers - Calyx lobes to 2mm long, glabrous, white internally, externally with 3 green vertical lines(united at apex) and white margins. Stamens 3, white, glabrous, 1.4mm long. Anthers yellow, to .3mm long. Ovary of 3 united carpels, globose, superior, glabrous, green. Placentation axile. Styles to .4mm long. Capsule to 2.2mm long, ovoid, many seeded. Seeds brown, shiny, reniform, .6mm broad. Flowering - May - November. Habitat - Waste ground, disturbed sites, glades, roadsides, railroads. Origin - Native to Central and South America. Other info. - This miniature weed can be found throughout Missouri and much of the U.S. The plant is simple to ID in the field because of its whorled leaves, pedicillate flowers, and prostrate nature. Although the plant is typically found as a small specimen, it is quite capable of forming a large mat. Some authors place the plant in another family, the Molluginaceae.
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Dummer. ゛☀
2017年07月12日
Dummer. ゛☀
Family - Asteraceae Stems - No info. yet. Leaves - No info. yet.
Involucre - No info. yet. Ray flowers - Absent. Disk flowers - No info. yet.
Flowering - July - October. Habitat - Swampy woods, ditches, fence rows, pond margins. Origin - Native to U.S. Other info. - This vining species can be found in the southeast corner of Missouri. The plant is very easy to identify in the field because of its vining habit, opposite, sagittate leaves, and umbels of whitish flower heads. This is a weedy species which can grow very long very quickly. It is probably not the best choice to plant around a water garden. The plant is, however, frequently visited by many different types of flying insects. The genus Mikania is a large cosmopolitan genus confined mostly to the tropics.
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Dummer. ゛☀
2017年07月12日
Dummer. ゛☀
Family - Lamiaceae Stems - To .75m tall, glabrous, 4-angled, from creeping rhizomes. Leaves - Opposite, sessile or on very short petioles, ovate to ovate-lanceolate, toothed, to +7cm long, 3cm wide, glabrous above, glabrous or very sparsely pubescent below, very fragrant. Inflorescence - Terminal spike of floral whorls (verticillasters). Bracts accompanying clusters linear, not longer than clusters. Flowers - Corolla white to light lavender (lilac), 2-3mm long, 4-lobed, regular. Calyx 1.5-2mm long, 5-lobed, pubescent. Flowering - June - October. Habitat - Moist to wet ground. Origin - Native to Europe. Other info. - This is the familiar "Spearmint" used to flavor teas, candies, and other products. The leaves give off the very distinctive scent when crushed. The plant is a vigorous grower and is cultivated worldwide. It can be easily grown by the home gardener if moist soil is provided.
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Dummer. ゛☀
2017年07月12日
Dummer. ゛☀
Family - Asclepiadaceae Stems - Twining, climbing, herbaceous, brownish, with milky sap, hirsute and with glandular pubescence (some hairs with swollen glandular bases), from thickened roots.
Leaves - Opposite, petiolate. Petiole 5-6cm long, with same pubescence as stem. Blade to +/-13cm long. +/-10cm broad, broadly ovate to orbicular, cordate, entire, acute to acuminate, scabrous above from swollen pubescence, appearing punctate because of swollen hairs.
Inflorescence - Axillary umbellate cymes with +15 flowers. Peduncles to 6cm long. Pedicels to +2cm long. Peduncles and pedicels with same pubescence as stem. Flowers - Corolla white, 5-lobed. Lobes twisting, +/-1.2cm long, 2-3mm broad, with same pubescence as stem externally, glabrous internally, blunt to slightly emarginate. Corona 5-lobed. Lobes to .5mm long, alternating with appendages. Appendages to .8mm long, often bifurcate. Pollinia minute, +/-.1mm broad, .3mm long, with dark reddish-brown translator. Anther head discoid, +/-1.3mm broad (diameter). Calyx 5-lobed. Lobes 3-4mm long, lanceolate, spreading to slightly recurved, densely brown glandular. Follicles to 9cm long, tuberculate. Seeds ovate, to 9mm long. Coma to +3cm long, tan. Flowering - May - June. Habitat - Moist ground of rocky open woods and thickets. Also on glades. Origin - Native to U.S. Other info. - This is one of 4 species of the genus found in Missouri. This plant prefers moist ground and is found mostly in the southwest corner of the state. This is an easy species to identify becasue of its opposite leaves, pubescent stems, and white flowers. The flowers have twisted petals.
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Dummer. ゛☀
2017年07月12日
Dummer. ゛☀
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.
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Dummer. ゛☀
2017年07月12日
Dummer. ゛☀
Family - Caryophyllaceae Stems - To +70cm tall, herbaceous, erect to decumbent, branching, fistulose, densely pubescent to hirsute, from a taproot, purplish in strong sun. Leaves - Opposite. Basal leaves petiolate, spatulate. Cauline leaves sessile, oblong to lanceolate above, acute, to +/-10cm long, +/-2.5cm broad, hirsutulous above and below, slightly scabrous above. Margins entire, sometimes undulate or crisped. At least the upper leaves connected at base by a thin membrane sheath.
Inflorescence - One to many flowers in an open dichasium. Pedicels(of pistillate plants) elongating in fruit to +/-4cm long. Pedicels of both sex plants often purplish, glandular pubescent. Flowers opening at night, fragrant. Male (staminate) and female (pistillate) flowers appearing on different plants (dioecious). Flowers - Petals 5, white, clawed (the claws greenish-white and glabrous), auriculate, to +1cm long, +5mm broad, cleft to the middle, distinct. Stamens 10, typically included. Styles 5, barely exserted, white, glandular pubescent, ribbonlike in apical 1/2. Pistillate calyx becoming inflated, with 20 nerves - 10 bold and 10 faint. Tube to 1.5cm long, hirsutulous to hirsute and glandular pubescent externally, glabrous internally, with 5 lobes. Lobes lanceolate, to 5mm long, 2mm broad at base, hirsutulous to hirsute. Staminate calyx tube slightly shorter than pistillate and with 10 nerves and same pubescence as pistillate calyx. Ovary green, 7mm long, 3mm in diameter, cylindrical, glabrous. Capsule green, ovoid, to 1cm in diameter, 1.5cm long, glabrous, unilocular, with 5 teeth. Teeth each divided and appearing as 10 teeth total. Placentation free-central. Seeds many, brownish to blackish, to 1.2mm long, symmetrically tuberculate.
Flowering - May - September. Habitat - Fields, waste ground, disturbed sites, roadsides, railroads. Origin - Native to Europe. Other info. - This little plant is not extremely common in Missouri yet but is becoming widespread. The flowers open at night and have a pleasant fragrance for attracting flying insects. This species closely resembles Silene noctiflora L. which also blooms at night and has very similar characteristics. The two plants can be distinguished in the fact that L. alba is a dioecious species, has 5 styles, and has a capsule with 5 teeth (which appear as ten) at the apex. S. noctiflora is monoecious, has 3 styles, and has 6 teeth on the capsule. S. noctiflora is much less common in Missouri than L. alba. A synonym for L. alba is Silene pratensis (Raf.) Godr. & Gren.
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