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哈密黄耆 |
中文学名:哈密黄耆 拉丁学名:Astragalus hamiensis S. B. Ho in Bull. 界:植物界 门:被子植物门 纲:双子叶植物纲 目:豆目 科:豆科 属:黄芪属 种:哈密黄耆 |
哈密黄耆(hā mì huáng qí,学名:Astragalus hamiensis S. B. Ho in Bull.,异名 Astragalus centraligobicus Astragalus banzragczii )为豆科黄芪属的植物,为中国的特有植物。分布于中国大陆的内蒙古、新疆、甘肃等地,常生于戈壁滩上及近水的砂地。 [1]
哈密黄耆形态特征
多年生草本,高20-40厘米,疏被灰白色贴伏毛。 茎直立,多分枝。
羽状复叶有5-9片小叶,长4-5厘米,具短叶柄;托叶三角形,下部多少合生;小叶椭圆形、披针形或卵圆形,长10-20毫米,宽5-10毫米,先端钝圆或急尖,基部近圆形或宽楔形。
总状花序生6-15花,排列较紧密;总花梗长5-8厘米,苞片披针形,较花梗长,被白色毛;花萼钟状管形,长7-8毫米,萼齿钻形,长为筒部的1/3或1/2;
花冠白色或淡红色,旗瓣倒卵形,长13-15毫米,宽6-7毫米,先端微缺,瓣柄不明显,翼瓣较旗瓣稍短,瓣片狭长圆形,先端钝圆,瓣柄与瓣片等长,龙骨瓣与翼瓣等长或稍短,瓣片长圆形,较瓣柄稍长;子房无柄,被白色伏贴毛。
荚果细圆柱形,微弯,长3-4厘米,粗2-3毫米,被白色伏贴毛或半开展毛,2室,每室含多颗种子。
花期4-5月,果期6-8月。[2]
Astragalus hamiensis S. B. Ho in Bull. Bot. Res. 3 (1): 43. f. 2. 1983; 中国沙漠植物志2: 271. 图版96 (21-25). 1987.
Astragalus banzragczii N. Ulziykhutag; A. centraligobicus Z. Y. Chu & Y. Z. Zhao.
Plants 12-40 cm tall, caespitose, with appressed ± medi-fixed white hairs. Stems several to numerous, ascending to erect, sparsely to loosely covered with hairs 0.3-0.5 mm, often strongly glabrescent with age. Leaves 3-5 cm; stipules nearly semiamplexicaul, 3-4 mm, shortly adnate to petiole, loosely hairy; petiole 0.5-2.5 cm, like rachis loosely hairy; leaflets in (2 or)3 or 4 pairs, remote, ± elliptic, 10-20 × 4-10 mm, both sur-faces loosely covered with hairs 0.8-1 mm, apex acute or acu-minate. Racemes 4-15-flowered; peduncle 5-8 cm, hairy like stem; bracts 3-4 mm, sparsely to loosely hairy. Calyx 7-8 mm, loosely to rather densely hairy; teeth unequal, 1-2 mm. Petals whitish to pinkish; standard obovate, 13-15 × 6-7 mm, apex emarginate; wings 11-13 mm; keel 13-14 mm. Legumes ses-sile, erect, linear, straight to slightly curved, 25-40 mm, 2-3 mm high and wide, with a straight beak 1-2 mm, 2-locular; valves slightly knobby by seeds, loosely covered with ap-pressed hairs up to 1 mm.
Gansu, Nei Mongol, Xinjiang [Mongolia].
哈密黄耆生长环境
生长于戈壁滩上及近水的砂地。[3]
哈密黄耆分布范围
模式标本采自新疆哈密。 [4]