窄翼黄耆查看源代码讨论查看历史
| 窄翼黄耆 |
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中文学名:窄翼黄耆 拉丁学名:Astragalus degensis 别 称:窄翼黄耆,窄翼黄芪, 洛隆黄芪,窄翼黄蓍 界:植物界 门:被子植物门 纲:双子叶植物纲，又称木兰纲 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:黄耆亚属 组:膜荚组 |
窄翼黄耆（zhǎi yì huáng qí，学名：Astragalus degensis）为豆科黄芪属的植物，为中国的特有植物。产四川西部（德格、巴塘、乡城）、西藏东部（江达、昌都）。生于海拔3700-4200米的高山栎林及冷杉林下或草坡中。 [1]
窄翼黄耆形态特征
多年生草本。根粗壮，直伸，直径可达2.5厘米。
茎直立，高50-100厘米，具条纹；被稍开展的白色柔毛或混生黑色毛。
羽状复叶有17-25片小叶，长5-12厘米，具短柄；托叶草质，离生，线状披针形，长6-10毫米，具缘毛；小叶长圆形或长圆状披针形，长5-18毫米，宽3-6毫米，先端钝，具凸尖头，基部钝圆或宽楔形，上面被伏贴柔毛，下面毛较密。
总状花序腋生，生多数花，稍稀疏；总花梗比叶长；苞片线形，长4-6毫米，小苞片缺；花梗长3-4毫米，连同花序轴被黑色柔毛或近下部混生白色毛；花萼钟状，长4-5毫米，外面被黑色伏贴柔毛，萼齿钻形，长1-2毫米；
花冠淡紫色，旗瓣狭倒卵形，反折，长10-12毫米，先端钝，基部渐狭，翼瓣长8-10毫米，瓣片线状长圆形，宽约1毫米，基部具短耳，瓣柄长约5毫米，龙骨瓣与旗瓣近等长，瓣片半卵形，最宽处约3毫米，瓣柄长约5毫米；子房被黑毛或混生白色柔毛，具柄。
荚果梭状卵形，长15-18毫米，宽4-6毫米，两端尖，密被黑毛或混生白色柔毛，果颈长4-6毫米；种子2-4颗。
花期7-8月，果熟期8-9月。 [2]
Astragalus degensis var. rockianus E. Peter; A. grubovii S. H. Cheng ex P. C. Li (1989), not Sanchir (1974); A. guan-shuanus P. C. Li; A. voburus Y. H. Xu & Q. R. Liu.
Plants 40-50(-100) cm tall, with appressed hairs 0.3-0.6(-1) mm. Stem sparsely to loosely covered with white and black or predominantly black hairs, glabrescent with age. Leaves 6-12 cm; stipules linear-subulate, 6-10 mm, spreading to reflexed, black ciliate; rachis sparsely to loosely covered with mostly black hairs; leaflets in 7-15 pairs, narrowly elliptic, 8-20(-30) × 3-8(-12) mm, abaxially ± light green and loosely appressed white hairy, adaxially dark green and glabrous, apex acute to slightly retuse with a distinct cusp ca. 0.5 mm. Ra-cemes ca. 3 cm, densely many flowered, at fruiting time elon-gated and up to 6(-12) cm; rachis loosely to densely black hairy; peduncle 5-20 cm, loosely to rather densely black hairy, glabrescent with age; bracts whitish, linear-subulate, 5-7 mm, black ciliate. Calyx shortly tubular, 6-9 mm, loosely covered with white and black or only black hairs; teeth subulate, 3-5 mm. Petals yellow to greenish yellow or purplish, yellow when dry; standard oblong to elliptic, 11-13(-15) × 4-7 mm, rounded at apex; wings 10-11(-13) mm; keel 11-12(-14) mm. Legumes with a stipe 4-7 mm, erect or spreading, ellipsoid, compressed laterally, 1.3-1.7 cm, 6-8 mm high and 2.5-3 mm wide, sharply keeled ventrally, keeled to narrowly rounded dorsally, shortly acuminate at both ends; valves dirty brownish, sparsely to rather densely covered with subappressed black and white or only black hairs.
窄翼黄耆生长环境
窄翼黄耆生长于海拔3700-4200米的高山栎林及冷杉林下或草坡中。 [3]
窄翼黄耆分布范围
窄翼黄耆产于四川西部（德格、巴塘、乡城）、西藏东部（江达、昌都）。
模式标本采自四川德格。