绿手指
首页
动态
文章
百科
花园
设置
简体中文
已关注
+
关注
花园 (6)
动态 (3585)
Dummer. ゛☀
2017年07月31日
Dummer. ゛☀
Family - Asteraceae Stems - Flowering scapes to +/-35cm long (tall), terete, hollow, 2-3mm in diameter, striate-nerved, glabrous except at the apex below the involucre, simple, typically 1-2 per plant but can be many more. Hairs of the scapes below the involucre glandular (the glands at the tips of the hairs are purple). Roots of the plant long and fibrous, with large nodular growths. All parts of the plant with milky sap.
Leaves - In a basal rosette, entire to coarsely (2-6) dentate, acute, linear-oblong, bluish-green, often glaucous, glabrous except at the very base (adaxially), to +/-15cm long, +/-1.5cm broad. Inflorescence - Single flowerhead terminating the flowering scape. Involucre - Involucre to 1.5cm long, uniseriate. Phyllaries distinct, linear, -1.5cm long, 2mm broad, bluish-green, glabrous.
Ray flowers - Fertile. Corolla tube to 6mm long, whitish, glabrous to sparse pillose. Ligule yellow-orange, to +1.5cm long, +2.5mm broad, sparse pilose externally, glabrous internally, 5-toothed at the apex. Stamens adnate at the apex of the corolla tube. Filaments short, to 1mm long, glabrous. Anthers connate around the style, +/-5mm long, yellow-orange. Style exserted beyond the anthers, antrorsely barbellate, typically undivided. Pappus in two series (biseriate). Outer series of +/-10 short lanceolate scales to -1mm long. Inner series of +/-20 capillary bristles to -1cm long. The bristles barbellate. Achenes with +/-15 ribs, mostly glabrous except on the angles where they are antrorse strigose, +/-3mm long at maturity, brownish-black at maturity. Receptacle flat, naked.
Disk flowers - Absent. Flowering - April - June. Habitat - Prairies, glades, bluffs, sandy fields, open woods, roadsides. Origin - Native to U.S. Other info. - This handsome species can be found in the Ozark region of Missouri. It can be identified by its large yellow-orange flowerheads, basal leaves, milky sap, and large root nodules. Another species, K. virginica is similar but lacks the root nodules and has much smaller flowerheads. Both species can grow side by side.
0
0
文章
Dummer. ゛☀
2017年07月31日
Dummer. ゛☀
Family - Asteraceae Stems - Multiple from the base, from slightly thickened roots, branching, herbaceous, erect to ascending, mostly glabrous or with a few glandular hairs near the base of the stem leaves and in the internodes, glaucous, terete or slightly ridged from decurrent leaf midrib tissue, to +15cm tall, with white milky sap.
Leaves - Cauline leaves mainly opposite to sub-opposite, sessile, linear-spatulate, entire or with a few coarse-shallow teeth, light bluish-green, acute, glabrous, to +5cm long, +1cm broad. Upper leaves shorter and more broad than the lower.
Inflorescence - Single flower heads terminating long peduncles in an umbel-like arrangement from the upper leaf axils. Peduncles to -5cm long, glabrous below, with glandular hairs at the apex below the involucre. Involucre - Involucre to 5mm long, 6mm broad (in fruit), smaller in flower, cupulate. Phyllaries +/-8, uniseriate, ovate-lanceolate, glabrous, 5mm long, to +2mm broad, acute, the tips slightly spreading (in fruit).
Ray flowers - Flowers +/-25 per head, yellow to yellow-orange, fertile. Achenes brown in fruit, 1.5mm long, .5-.8mm broad, ribbed and rugose (under magnification), glabrous. Receptacle naked, dome-shaped. Disk flowers - Absent. Flowering - April - June. Habitat - Low moist fallow fields, sandy open alluvial ground, glades, meadows, lawns, prairies, upland sterile slopes and ridges, pastures, ditches, sloughs, ponds, railroads. Origin - Native to U.S. Other info. - This little species can be found mainly in the southern half of the state. The plant can be easily identified by its sub-opposite leaves, milky sap, yellow-orange ray flowers, and glaucous stems. Synonyms for this species are Krigia oppositifolia Raf. and Serenia oppositifolia (Raf.) Ktze.
0
0
文章
Dummer. ゛☀
2017年07月31日
Dummer. ゛☀
Family - Asteraceae Stems - To 30cm tall, simple, from fibrous roots, glabrous, herbaceous, with milky sap. Leaves - Mostly basal with typically one leaf on stem at base of lower peduncle. Basal leaves to +10cm long, +3cm broad, tissue abruptly contracted and then long cuneate to base, glabrous, shallowly lobed or not, with sparse shallow teeth or entire. Cauline leaf sessile, clasping, ovate, acute, to 3cm long, 2cm broad, glabrous, glaucous, entire.
Inflorescence - 1-3 flower heads terminating stem. Involucre - In one or two series, 9mm tall (long), 7-8mm in diameter. Phyllaries 8-9mm long, 1.5mm broad, linear, glabrous, glaucous, greenish with lighter margins. Peduncles to +6cm long.
Ray flowers - Entire flower head +/-2.5cm broad. Ligules yellow-orange, to 1.4cm long, 2-3mm broad, glabrous, notched at apex. Pappus in two series - Inner series of plumose bristles to 6mm long - Outer series of short scales to .5mm long. Achenes glabrous, terete.
Disk flowers - Absent. Flowering - May - August. Habitat - Rocky open woods, thickets, prairies, near streams, roadsides. Origin - Native to U.S. Other info. - This is one of the easier members of the Asteraceae to identify because of its flowering habit. The few large flowers are clustered at the tip of the stems and the peduncles subtended by the single cauline leaf. There are no disk flowers present. The stems can vary somewhat from glabrous to glandular.
0
0
文章
Dummer. ゛☀
2017年07月31日
Dummer. ゛☀
Family - Liliaceae Stems - Aerial stems (scapes) to +1m tall, erect, herbaceous, glabrous, glaucous, simple, single from base, hollow to subhollow, from thickened root crown. Leaves - In basal rosette, linear, grasslike, to +40cm long, 2cm broad, partially folded, either entire or with minute, sharp teeth along the margins, glabrous, glaucous.
Inflorescence - Dense indeterminate spikiform raceme to 20cm tall. Pedicels to 2mm long. Flowers drooping.
Flowers - Perianth yellow to orange-red or all red, tubular, 6-lobed, glabrous. Tube to +2.5cm long. Lobes 2-3mm long, rounded to acute. Stamens 6 (sometimes 4), slightly exserted or included. Filaments to 2.5cm long, glabrous. Anthers yellow, 2mm long and broad. Style 2.7cm long, whitish, glabrous. Ovary superior, glabrous, 3-4mm long, 3-locular. Placentation axile. Fruit dehiscent by 6 valves, many seeded.
Flowering - May - June. Habitat - Cultivated. Origin - Native to southern Africa. Other info. - The genus Kniphofia is popular in cultivation. Many different varieties of each species are grown. If you wish to see more of the varieties, do a search on the web, you'll find plenty of sites which discuss the genus. These plants can form large clumps over time.
0
0
文章
Dummer. ゛☀
2017年07月31日
Dummer. ゛☀
Family - Onagraceae Stems - With various growth patterns from erect to repent, on land or floating, herbaceous, glabrous or sparsely pubescent, often reddish, from fibrous roots, to +50cm long.
Leaves - Alternate, petiolate, glabrous, oblong to elliptic, tapering to base, acute at apex, entire, to +/-12cm long (with petiole), +2cm broad. Inflorescence - Single axillary flowers on long peduncles. Peduncles to +/-6cm in flower, elongating in fruit, glabrous or very sparse pilose pubescence, erect, with two sub-opposite bracts.
Flowers - Floral tube to 1.2cm in flower, 5-angled, tube subtended by two green scalelike bracts. Petals 5, free, yellow, 1.7cm long, 1.2cm broad, glabrous. Style 6-7mm long, glabrous. Stigma flattened, 3mm broad. Stamens 10. Filaments to 4.5mm long, glabrous, pale yellow. Anthers yellow, 2.1mm long. Ovary inferior, many seeded. Sepals 5, lanceolate, 1cm long, 3mm broad, acute, glabrous. Capsule (fruit) to -4cm long, +/-4mm in diameter, glabrous or with sparse pubescence. Seeds many.
Flowering - May - October. Habitat - Shallow still water, muddy soil, pond margins. Origin - Native to U.S. Other info. - This species can be found scattered throughout much of MIssouri but is mostly absent in the northern 1/4 of the state and also in the central Ozark region. The petals of this plant, and most of the plants related to it, fall off very easily. In still areas the plant can be quite showy when in full flower. In windy or high traffic areas the flowers may hold their petals only a short time. If the plant is rooted in wet soil it can creep over dry ground for a good distance. The stems are "spongy" internally and easily broken. The most modern synonym for this species is Ludwigia peploides (H.B.K.) Raven. Jussiaea diffusa Forsk., and Ludwigia ascendens (L.) Hara are older synonyms.
0
0
文章
Dummer. ゛☀
2017年07月31日
Dummer. ゛☀
Family - Amaryllidaceae Stems - Flowering stems to +10cm tall, herbaceous, typically hirsute but sometimes less so, +/-1mm in diameter, from a corm.
Leaves - Basal, linear, to +15cm long, +3mm broad, pubescent. Inflorescence - 1-6 flowers terminating the aerial stems, in a crude umbel. Pedicels to +2cm long, pubescent, sometimes subtended by small linear bracts.
Flowers - Tepals 6, spreading, entire, -1cm long, 2-3mm broad, oblong, glabrous internally. Outer tepals pubescent and greenish-yellow externally. Stamens 6, adnate at apex of ovary. Filaments glabrous, 2-3mm long. Anthers orange, 2.1mm long, sagittate. Style 1.5mm long, glabrous. Ovary inferior, 3-locular. Ovules tuberculate, keeled.
Flowering - April - May. Habitat - Prairies, glades, bluffs, dry woods, fields. Origin - Native to U.S. Other info. - This little species is common in Missouri and easily seen growing in fields even though it is quite small. The small yellow flowers open in the morning and typically wilt in hot sun. The amount of pubescence on this species can be variable.
0
0
文章
Dummer. ゛☀
2017年07月31日
Dummer. ゛☀
Family - Asteraceae Stems - To 60cm tall, simple, from fibrous roots, with milky sap, pubescent (pubescence consists of stellate, strigose, papillose-hispid, and appressed hairs). Hairs often purplish at base.
Leaves - Mostly basal but one or two on very lowest portion of erect stem. Blades typically entire, rounded to acute at apex, oblanceolate to obovate or spatulate, pubescent with pubescence as stem, 9-10cm long, +2.6cm broad.
Inflorescence - Cylindric paniculate or racemose arrangement of flower heads. Pubescence of inflorescence glandular and often purplish. Involucre - 1cm long(tall), 3-4mm in diameter. Phyllaries with purple glandular pubescence on midveins. Outer series of phyllaries small. Inner phyllaries to 8.1mm long, linear, 1-1.5mm broad, glabrous internally, with scarious margins. Ray flowers - Ligules yellow, to 1.2cm long, 1.5-2mm broad, 5-6 toothed at apex. Style yellow, bifurcate, to +/-1cm long. Pappus of capillary bristles. Achenes to 4mm long.
Flowering - May - October. Habitat - Dry woods, rocky soil, bluffs, glades, thickets, fields. Origin - Native to U.S. Other info. - This plant is distinctive and tough to miss in the wild. The scabrous leaves and long inflorescence make it easy to ID. The amount and type of pubescence can vary greatly from plant to plant and the plants I have found in New England and North Carolina were much less pubescent than those I've found here in Missouri. This species produces a fair portion of milky sap if injured.
0
0
文章
Dummer. ゛☀
2017年07月31日
Dummer. ゛☀
Family - Asteraceae Stems - To +1.5m tall, erect to ascending, multiple from base, herbaceous, from taproot, branching, scabrous to viscid, hirsute, glandular, reddish.
Leaves - Alternate, sessile(the lowest sometimes petiolate), auriculate-clasping, viscid, glandular, hirsute, fragrant, serrate-dentate(teeth mucronate), undulate, to 5cm long, 3cm broad, acute, dense on stem. Lower leaves with two small lateral lobes at base. Upper leaves simple. Inflorescence - Single flower heads terminating branches. Involucre - Cylindrical, to +8mm tall, 1cm in diameter. Phyllaries viscid, sparse pubescent externally, glabrous internally, imbricate, linear, the longest to 7mm long, 1mm broad. Margins scarious. Sometimes with reddish tip.
Ray flowers - Flowers fertile. Corolla tube pubescent. Ligule yellow, 1.4cm long, 2.1mm broad, glabrous. Achene (in flower) white, thickened, 2mm long, somewhat triangular, mostly glabrous. Pappus absent. Disk flowers - Disk to 1cm broad. Corolla yellow, 5-lobed, glabrous, to 4.5mm long. Lobes acute, -1mm long. Stamens 5, adnate at base of corolla tube, included. Anthers yellow, 2.2mm long, connate around style. Style bifurcate, slightly exserted. Achenes dense pubescent, 2mm long, white, weakly 4-angled. Pappus in two series. Outer series of short scales. Inner series of capillary bristles. Receptacle flat.
Flowering - August - November. Habitat - Loess hills, waste ground, roadsides, railroads. Origin - Native to U.S. Other info. - This species can be found mainly in the southeast corner of the state but is also present in a few more scattered counties. This is a fairly easy plant to ID in the field. The glandular hirsute stems and leaves plus the cylindric involucres are good characteristics for a positive ID. The leaves are also fragrant. Many taxonomists disagree about the nomenclature of the plant but let's not worry about that here.
0
0
文章
Dummer. ゛☀
2017年07月31日
Dummer. ゛☀
Family - Asteraceae Stems - Erect, typically simple until the inflorescence, terete, herbaceous, to +2m tall, typically 4-7mm broad at the base, glaucous, from elongate horizontal rhizomes and forming large colonies.
Leaves - Alternate, sessile, dense in the middle of the stem, spread apart more in the apical 1/3 of the plant, typically dried and deciduous in the basal 1/3 of the plant at anthesis, thin, glabrous, typically conduplicate, to +10cm long, 1-3mm broad, falcate. Inflorescence - Open, corymbose arrangement of flower heads on long peduncles. Peduncles glabrous, with a few reduced bracts, 5-20cm long. Involucre - +1cm broad and tall, of imbricate phyllaries. Phyllaries long attenuate, 1-1.5cm long, 2-3mm broad at the base, mostly glabrous but with spreading hairs at the base and appressed hairs along the margins, viscid externally. Ray flowers - +/-12 per head. Ligules yellow, +/-2.5cm long, 7-10mm broad, elliptic, glabrous. Corolla tube 2mm long, glabrous. Pappus of +/-5 translucent arista. Arista 1-3mm long.
Disk flowers - Disk +/-1cm broad. Corolla tube +/-5mm long, slightly glandular at the base externally, yellow, glabrous internally, +/-1mm in diameter, 5-lobed. Lobes purplish-brown, 1mm long, acute, glabrous. Stamens 5, adnate at the base of the corolla tube. Filaments yellow, glabrous, 2-3mm long. Anthers 3-4mm long, mostly exserted, connate around the style and stigma. Styles bifurcate at the apex, mostly glabrous but pubescent on the stigmas, yellow. Stigmas +/-2mm long, recurved. Receptacle chaffy. Chaff to -1cm long, folded around the disk florets, pubescent and translucent in the basal 2/3, greenish and puberulent in the apical 1/3, acute. Mature achenes not seen.
Flowering - August - October. Habitat - Upland prairies, limestone glades, roadsides. Origin - Native to U.S. Other info. - This attractive species can be found in a handful of western Missouri counties. The plant is easy to identify becasue of its thin, dense, falcate leaves. The leaves are congested at the middle of the stem at anthesis. H. salicifolius would make a great garden subject as it forms large colonies and the plants attain a tall height when mature. Each plant produces many medium-sized flower heads.
0
0
文章
Dummer. ゛☀
2017年07月31日
Dummer. ゛☀
Family - Asteraceae Stems - To 1m tall, erect, typically single from base, from fibrous roots, branching above, herbaceous, heavily winged from decurrent leaf tissue, scabrous, strigose. Wings of stem to 5mm broad.
Leaves - Basal leaves lanceolate to elliptic, to +20cm long, scabrous, strigose, entire to lobed. Cauline leaves alternate, lanceolate, acute, entire or with few shallow teeth, scabrous, densely strigose, to +10cm long, -2cm broad, reduced above, with heavily decurrent tissue from base. Inflorescence - Flower heads in loose corymbiform cluster at apex of stems. Peduncles carinate, densely strigose, scabrous. Involucre - Phyllaries linear, attenuate, reflexed at maturity and curling, in one series, 1-1.4cm long, 2.1mm broad, strigose abaxially and on margins, glabrous adaxially.
Ray flowers - Ligules yellow, to 2.5cm long, -2cm broad, 5-lobed at apex, tapering to base, densely pubescent below, glabrous above. Flowers sterile. Achenes flattened, short pubescent. Pappus of awn- tipped scales. Disk flowers - Disk to 1.5cm broad and tall, domed to globose. Receptacle ovoid. Corolla tube of disk flowers yellow, 2-3mm long, 4-lobed, dark maroon at apex because of dense glandular pubescence. Styles bifurcate, yellow. Flowers fertile. Achenes pubescent, 1.2mm long in flower. Pappus of 5-6 awn-tipped scales.
Flowering - June - November. Habitat - Pond margins, streambanks, ditches, swamps, wet meadows, wet depressions of prairies, pastures, moist areas of glades. Origin - Native to U.S. Other info. - H. flexuosum and other species in the genus contain a lactone known as Helenalin. This compound is poisonous to various animals but has anti-cancer properties. This species is often found standing alone in pastures as cows will not eat it. The plant is quite striking when in full flower and I think it should be cultivated more. It's a great plant to grow in those difficult wet areas of a yard. H. felxuosum is easy to ID in the field because of the heavily winged stems and brown disk flowers.
0
0
文章
283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298
相关用户
茉莉花
茉莉花
来自： Faye
朝阳
绿萝
绿萝
来自： 采元气少女✨
长沙
茉莉花
茉莉花
来自： 小松树快乐
长沙
绿萝
绿萝
来自： 水中月
赣州市
茉莉花
茉莉花
来自： 艺源
广安市
芦荟
芦荟
来自： 采元气少女✨
长沙
茉莉花
茉莉花
来自： 阿罗
南昌
芦荟
芦荟
来自： Bailu_Yuan
北京
白掌
白掌
来自： 韩凯
武汉
绿萝
绿萝
来自： 阿罗
南昌
举报 反馈

您有什么意见或建议，欢迎给我们留言。

请输入内容
提交
取消
设置
VIP
退出登录
关闭
分享

分享好文，绿手指（GFinger）养花助手见证你的成长。

关闭
请前往电脑端操作

请前往电脑端操作

关闭
转发
插入话题
提醒好友
发布
/
提交成功 提交失败 最大图片质量 成功 警告 啊哦！ 出了点小问题 转发成功 举报 转发 显示更多 _zh 文章 求助 动态 刚刚 回复 邀你一起尬聊！ 表情 添加图片 评论 仅支持 .JPG .JPEG .PNG .GIF 图片尺寸不得小于300*300px 最少上传一张图片 请输入内容