白枝黃耆檢視原始碼討論檢視歷史
| 白枝黃耆 |
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中文學名:白枝黃耆 拉丁學名:Astragalus leucocladus Bunge 別 稱:白枝黃芪 界:植物界 門:被子植物門 綱:雙子葉植物綱 目:豆目 科:豆科 屬:黃芪屬 種:白枝黃耆 |
白枝黃耆（bái zhī huáng qí，學名：Astragalus leucocladus Bunge）是豆科黃芪屬的植物。老枝深褐色，幼枝細弱，密被灰白色伏貼毛。小葉狹橢圓形或線狀長圓形，總狀花序生10餘朵花，排列緊密，近球形，莢果長圓形，密被開展的白色長毛和少量黑色毛。花期6月，果期7-8月。分布於天山以及中國大陸的新疆等地，生長於海拔1,300米的地區，多生在山坡等地。 [1]
白枝黃耆形態特徵
低矮灌木，高30-50厘米。老枝深褐色，幼枝細弱，密被灰白色伏貼毛。
羽狀複葉有9-13小葉，長4-6厘米，近無柄；葉軸被灰白色伏貼毛；托葉三角狀披針形，基部與葉柄貼生，被白、黑色伏貼毛；小葉狹橢圓形或線狀長圓形，長13-22毫米，寬3-5毫米，先端漸尖或鈍圓，有小芒尖，基部略寬，上面散生白色伏貼毛，下面毛較密；小葉柄極短。
總狀花序生10餘朵花，排列緊密，近球形，直徑達2-4厘米；總花梗生於上部葉腋，長為葉的1-2倍，被灰白色毛或緊接花序處混生很少黑色伏貼毛；苞片狹線形，漸尖，被白、黑色長毛；
花萼初期膨大，上部帶紫色，長10-13毫米（果期可達15毫米），被較密的開展長毛和少量半開展的黑毛，萼齒絲狀，長為萼筒的1/3，被較多的黑毛；
花冠粉紅色（干後色），旗瓣長約20毫米，瓣片狹倒卵形，微凹，中部以下微縊縮，下部漸狹成瓣柄，翼瓣較旗瓣稍短，瓣片長圓形，先端微凹，瓣柄比瓣片長1.5-2倍，龍骨瓣較翼瓣稍短，瓣片長約為瓣柄的1/2或1/3；子房無柄，被白色長綿毛。
莢果長圓形，密被開展的白色長毛和少量黑色毛。花期6月，果期7-8月。[2]
Astragalus leucocladus Bunge in Bull. Soc. Nat. Moscou 39 (3): 27. 1866; id. in Mem.Acad. Sci. St. Petersb. VII. 11 (16): 136. 1868 et 15 (1): 233. 1869; Boriss. in Kom. Fl. USSR 12: 832. 1946; S. B. Ho in Bull. Bot. Res. 3 (4): 55. 1983.
Plants 30-45 cm tall, densely covered with mostly ± medi-fixed hairs. Stems branched at base, those of current year 9-16 cm, densely covered with white hairs 0.5-0.8 mm, at nodes also with black hairs. Leaves 4-6 cm, subsessile; stipules 4-7 mm, adnate to petiole for up to 1 mm, covered with white and pre-dominantly black hairs; rachis loosely to rather densely hairy like stem; leaflets in 4-6 pairs, 13-22 × 2-4 mm, abaxially loosely and adaxially sparsely covered with appressed white hairs 1-1.5 mm. Racemes short, densely 8-12-flowered; pedun-cle 9-15 cm, rather densely hairy like stem; bracts 4-5 mm, covered with mostly strongly asymmetrically bifurcate to basi-fixed, spreading, black and white hairs ca. 1 mm. Calyx at an-thesis ca. 12 mm, tubular, rather densely covered with mostly strongly asymmetrically bifurcate, ± spreading, white hairs up to 1.5 mm and with shorter, mostly more symmetrically medi-fixed, black hairs; teeth 2-2.5 mm; calyx soon becoming in-flated, at fruiting time ovoid, ca. 15 × 6-7 mm, loosely hairy. Petals yellow; standard obovate, ca. 20 × 6 mm, slightly con-stricted in middle, apex emarginate; wings 17-18 mm, limbs obliquely emarginate; keel 15-16 mm. Legumes included in ca-lyx, ca. 10 mm, ca. 3 mm high (immature), with a slender beak ca. 2 mm, 2-locular; valves densely covered with mostly basi-fixed, spreading, white hairs ca. 2 mm and with much shorter black hairs up to 0.5 mm.
Steppes. Xinjiang [Kazakhstan].
白枝黃耆生長環境
生長於海拔1300米的山坡等地。[3]
白枝黃耆分布範圍
產於新疆準噶爾盆地南部（尼勒克城）。天山東部也有分布。[4]
白枝黃耆參考文獻
白枝黃耆（植物研究）Astragalus leucocladus Bunge in Bull. Soc. Nat. Moscou 39 (3): 27. 1866; id. in Mem.Acad. Sci. St. Petersb. VII. 11 (16): 136. 1868 et 15 (1): 233. 1869; Boriss. in Kom. Fl. USSR 12: 832. 1946; S. B. Ho in Bull. Bot. Res. 3 (4): 55. 1983.