《中国植物志》|| 豆科 LEGUMINOSAE ||多枝组 Sect. Polycladi Y. C. Ho ||多枝黄耆 Astragalus polycladus Bureau & Franch.

107. 多枝黄耆（中国主要植物图说•豆科）
Astragalus polycladus Bur. et Franch. in Journ. de Bot. 5: 23. 1891; Simps. in Not. Roy. Bot. Card. Edinb. 8: 254. 1915; Pet. -Stib. in Acta Hort. Gothob. 12: 33. 1937-1938; 中国主要植物图说•豆科403. 图396. 1955. ——A. decumbens Kom. in Fedde Repert. Sp. Nov. 15: 230. 1915.——A. yunningensis Tsai et Yu in Bull. Fan Mem. Inst. Biol. Bot. 9: 267. 1940. ——A. tataricus auct. non Franch.: Simps. op. cit. 8: 255.
多年生草本。根粗壮。茎多数，纤细，丛生，平卧或上升，高5-35厘米，被灰白色伏贴柔毛或混有黑色毛。奇数羽状复叶，具11-23片小叶，长2-6厘米；叶柄长0.5-1厘米，向上逐渐变短；托叶离生，披针形，长2-4毫米；小叶披针形或近卵形，长2-7毫米，宽1-3毫米，先端钝尖或微凹，基部宽楔形，两面披白色伏贴柔毛，具短柄。总状花序生多数花，密集呈头状；总花梗腋生，较叶长；苞片膜质，线形，长1-2毫米，下面被伏贴柔毛；花梗极短；花萼钟状，长2-3毫米，外面被白色或混有黑色短伏贴毛，萼齿线形，与萼筒近等长；花冠红色或青紫色，旗瓣宽倒卵形，长7-8毫米，先端微凹，基部渐狭成瓣柄，冀瓣与旗瓣近等长或稍短，具短耳，瓣柄长约2毫米，龙骨瓣较翼瓣短，瓣片半圆形；子房线形，被白色或混有黑色短柔毛。荚果长圆形，微弯曲，长5-8毫米，先端尖，被白色或混有黑色伏贴柔毛，1室，有种子5-7枚，果颈较宿萼短。花期7-8月，果期9月。
产四川、云南、西藏、青海、甘肃及新疆西部。生于海拔2000-3300米间的山坡、路旁。模式标本采自四川康定。

《云南植物志》|| 蝶形花科 Papilionaceae ||黄芪属 Astragalus Linn. ||多枝黄芪 Astragalus polycladus Bur. et Franch.

20. 多枝黄芪（豆科图说）
Astragalus polycladus Bur. et Franch. (1891); Simpson (1915); Peter-Stibal (1937-1938); 豆科图说 (1955)*; Y. C. Ho (1981); 中国植物志 (1993)*.
Astragalus tataricus auct. non Franch.: Simpson (1915).
多年生草本。茎细弱丛生，高15-30厘米，被黑色短毛。叶长4-6厘米，叶柄长3-6毫米，与叶轴均被黑色短柔毛；托叶三角形，长2毫米，分离，内面被白色柔毛；小叶19-23枚，卵状圆形至卵状披针形，顶端钝，两面均被白色长柔毛，长4-8毫米，宽2-4毫米。总状花序腋生，多花聚集成头状，总花梗长5-10厘米，被黑色短毛；苞片线形，被白色柔毛，长2毫米；花萼钟状，长4毫米，具黑、白色混杂柔毛，萼齿线形，与萼筒等长；花冠淡灰紫色，旗瓣长6毫米，瓣片卵状长圆形，顶端微缺，翼瓣与旗瓣近等长，爪约为瓣片的1/3，龙骨瓣长5毫米，具短爪；子房密被毛，具短柄。荚果矩形，密被黑色柔毛，顶端急尖，具喙，长8毫米，腹缝线下陷，近假2室。花果期7-10月。
产新疆、甘肃、青海、四川。模式标本采自四川康定。云南不产。

《Flora of China》|| Fabaceae || Astragalus ||多枝黄耆 Astragalus polycladus

172. Astragalus polycladus Bureau & Franchet, J. Bot. (Morot). 5: 23. 1891.

多枝黄耆 duo zhi huang qi

Astragalus decumbens Komarov; A. nigrescens Franchet (1890), not Pallas (1800), nor Nuttall (1847), nor (Hooker) A. Gray (1862); A. polycladus var. glabricarpus Y. H. Wu; A. poly­cladus var. nigrescens E. Peter.

Plants 10-50 cm tall; hairs ± subappressed, in vegetative parts nearly only white, in inflorescence also black. Stems sparsely to loosely covered with hairs 0.2-0.4 mm. Leaves 4-6 cm, subsessile; stipules 3-4 mm, behind stem distinctly con­nate, sometimes up to 3/4 of length, upper ones sometimes nearly free, all hairy or subglabrous; rachis loosely hairy; leaf­lets in 5-11 pairs, narrowly elliptic, 4-9(-14) × 2-4(-5) mm, abaxially loosely to densely and adaxially sparsely to loosely covered with hairs 0.5-1 mm, apex rounded to emarginate. Ra­cemes ovoid to shortly cylindric, rather densely many flowered; peduncle 3-8 cm, loosely or in upper part more densely covered with white or black hairs 0.2-0.3 mm; bracts 2-3 mm, white and black hairy. Calyx 3-4 mm, loosely covered with black hairs 0.1-0.3 mm and mostly with some white hairs 0.5-0.7 mm; teeth 0.8-2.5 mm. Petals pale violet, with darker keel; standard elliptic, 6-7 × 3-4; wings 5-6 mm; keel 5-5.5 mm. Legumes spreading to slightly pendulous, with a stipe ca. 2 mm, 5-10 mm, 1.8-3 mm high and wide, with a minute beak, incompletely 2-locular; valves rather densely covered with sub­appressed to ascending white or white and black hairs 0.3-0.4 mm.

● Meadows, roadsides, light scrub; 2000-4500 m. Gansu, Qing­hai, Sichuan, Xinjiang, Xizang, Yunnan.