长序黄耆
| 长序黄耆 |
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中文学名:长序黄耆 拉丁学名:Astragalus longiscapus Ni et P. C. Li in Acta Phytotax. 别 称:长梗黄耆 界:植物界 门:被子植物门 纲:双子叶植物纲 亚 纲:原始花被亚纲 目:蔷薇目 亚 目:蔷薇亚目 科:豆科 亚 科:蝶形花亚科 族:山羊豆族 黄耆亚族 属:黄耆属 亚 属:密花亚属 组:矮茎组 |
长序黄耆（cháng xù huáng qí，学名：Astragalus longiscapus Ni et P. C. Li in Acta Phytotax.）为豆科黄芪属的植物，是我国的特有植物。产我国西藏南部（聂拉木、错那)。生于海拔4050-4100米的山坡草地及石滩上。 [1]
目录
长序黄耆形态特征
整体 多年生草本，几无茎。
叶 羽状复叶有9-11片小叶，长4-9厘米；叶柄细长，长3-7厘米，无毛；托叶草质，长圆形，有数条脉，幼时疏被白色短柔毛，后变无毛，与叶柄贴生达中部以上；小叶长圆形或狭长圆形，长5-8毫米，上面无毛，下面密被白色贴伏短柔毛；小叶柄很短。
花
总状花序密而短，生8-10花；总花梗生于基部叶腋，长约10厘米，较叶长，花葶状，疏被白色伏贴短柔毛；花梗极短；花萼钟状，长4-5毫米，被黑色长柔毛，萼筒长3-3.5毫米，萼齿钻状，长不及筒部的1/2；
花冠青紫色，长7-8毫米；旗瓣宽倒卵形，长约7毫米，瓣片近圆形，长5-6.5毫米，宽5-6毫米，下部渐狭为楔状短瓣柄；翼瓣与旗瓣近等长，瓣片倒卵状长圆形，长5-6毫米，宽1.5-2毫米，先端钝圆，基部耳向外展，瓣柄长2-2.5毫米，龙骨瓣稍短于翼瓣和旗瓣，长约6毫米，瓣片近倒卵形，长3-3.5毫米，宽约为翼瓣的2倍，瓣柄长约2毫米；子房有短柄，仅缝线处被疏毛，柄长不及1毫米。 [2]
荚果未见。花期6月。 [3]
Plants 20-35 cm tall. Stems several, loosely covered with spreading rigid white hairs and below nodes with black hairs 0.2-0.3 mm. Leaves 3-8 cm; stipules 3-7 mm, very shortly adnate to petiole, otherwise free, sparsely white and/or black hairy; petiole 0.3-2 cm, together with rachis white or black and white hairy like stem; leaflets in 6-9 pairs, narrowly elliptic, (7-)9-27 × 2-7 mm, at base of petiolule with crowded, minute, sessile glands, abaxially densely to rather densely covered with appressed to subappressed or partly ascending hairs up to 0.5 mm, adaxially glabrous, apex obtuse to subacute or sometimes slightly retuse. Racemes 2-5 cm, densely many flowered; pe-duncle 3-6 cm, in lower part loosely covered with spreading white and black hairs up to 0.3 mm, in upper part mostly black hairy; bracts 2-3 mm, sparsely black hairy. Calyx 3-4 mm, densely covered with ascending predominantly black hairs up to 0.5 mm; teeth 1-2 mm. Petals pale pink, violet, or white; standard obovate, 8-10 × ca. 5 mm, apex rounded to slightly emarginate; wings 7-8 mm, limbs narrowly obovate, rounded at apex; keel ca. 5 mm. Legumes 4-5 mm, 2.5-3 mm high, 2-loc-ular; valves transversely rugose, densely covered with white hairs, with a few black hairs mixed in. Seeds 2.
● Lakeshores; ca. 3100 m. Qinghai (Qinghai Hu).
长序黄耆生长环境
生长于海拔4050-4100米的山坡草地及石滩上。 [4]