多花黃耆檢視原始碼討論檢視歷史
| 多花黃耆 |
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中文學名:多花黃耆 拉丁學名:Astragalus floridus Bunge 界:植物界 門:被子植物門 綱:雙子葉植物綱 亞 綱:原始花被亞綱 目:薔薇目 亞 目:薔薇亞目 科:豆科 亞 科:蝶形花亞科 族:山羊豆族·黃耆亞族 屬:黃耆屬 亞 屬:黃耆亞屬 組:膜莢組 命名者及年代:Bunge, 1869 |
多花黃耆（duō huā huáng qí，學名：Astragalus floridus Bunge）多年生草本。托葉離生。花黃色或紫紅色，排成疏鬆的總狀花序，具長總花梗；子房具柄。莢果果瓣膜質，兩端尖，表面被棕色或黑色半開展或倒伏柔毛；果頸與萼筒近等長，種子3-5顆。花期7-8月，果期8-9月。生於海拔2600-4300米的高山草坡或灌叢下。分布於中國西北部和錫金。 [1]
多花黃耆形態特徵
多 年生草本，被黑色或白色長柔毛。
根粗壯，直伸，暗褐色。莖直立，高30-60厘米，有時可達100厘米，下部常無枝葉。
羽狀複葉有13-14片小葉，長4-12厘米；葉柄長0.5-1厘米；托葉離生，披針形或狹三角形，長8-10毫米，下面散生白色和黑色柔毛；小葉線狀披針形或長圓形，長8-22毫米，寬2.5-5毫米，上面綠色，近無毛，下面被灰白色、多少伏貼的白色柔毛。
總狀花序腋生，生13-40花，偏向一邊；花序軸和總花梗均被黑色伏貼柔毛，花後伸長；總花梗比葉長；苞片膜質，披針形至鑽形，長約5毫米；花梗細，長約5毫米，被黑色伏貼柔毛；
花萼鍾狀，長5-7毫米，外面及萼齒裡面均被黑色伏貼柔毛，萼齒鑽形，較萼筒略短或近等長；
花冠白色或淡黃色，旗瓣匙形，長11-13毫米，先端微凹，基部具短瓣柄，翼瓣比旗瓣略短，瓣片線形，寬1-1.5毫米，具短耳，瓣柄與瓣片近等長，龍骨瓣與旗瓣近等長，瓣片半卵形，最寬處達3-3.5毫米，具短耳，瓣柄與瓣片近等長；子房線形，密被黑色或混生白色柔毛，具柄。
莢果紡綞形，長12-15毫米，寬約6毫米，兩端尖，表面被棕色或黑色半開展或倒伏柔毛；果頸與萼筒近等長，1室；種子3-5顆。 花期7-8月，果期8-9月。 [2]
Astragalus floridus Benth. ex Bunge in Mem. Acad. Sci. St. Petersb. VII. 15 (1): 28. 1869; Baker, in Hook. f. Fl. Brit. Ind. 2: 127. 1867; Dunn in Journ. Linn. Soc. Bot. 39: 421. 1911; Simps. in Not. Roy. Bot. Card. Edinb. 12: 45. 1937-1938; 中國主要植物圖說·豆科413. 圖409. 1955; 西藏植物志2: 830. 1985. ——A. przewalskii? Hand. -Mazz. Symb. Sin. 7: 556. 1933, pro parte, non Bunge 1877.
Astragalus floridus Bentham ex Bunge (1869), not Scopoli (1787).
Plants 50-90 cm tall, with hairs 0.2-0.8(-1) mm. Stems at base up to 6 mm thick, with slender, non-flowering lateral branches out of most of leaf axils, loosely covered with as-cending, mostly black hairs. Leaves on main stem 5-9 cm; stip-ules on main stem linear-acute, 1-1.4 cm, white ciliate, those on lateral branches 4-5 mm; rachis slender, with ascending white hairs; leaflets in 10-15 pairs, very narrowly elliptic to narrowly elliptic, 10-17(-20) × 2-6 mm, abaxially rather densely ap-pressed white hairy, adaxially glabrous, apex acute; leaves and leaflets on lateral branches mostly distinctly smaller. Racemes densely many flowered, ovoid to capitate, later strongly elon-gated and in fruit up to more than 15 cm; peduncle 2-7 cm, loosely covered with ascending to spreading white and pre-dominantly black hairs; bracts whitish membranous, linear-acute, 3.5-6 mm, black ciliate. Calyx shortly tubular, 5-6 mm, strongly obliquely cut at mouth, in lower part loosely, toward teeth rather densely, covered with longer appressed black or white hairs, young inflorescences therefore white or sometimes black sericeous; teeth slightly unequal, 2 adaxial 1-2 mm, 3 abaxial 1.5-3 mm, sometimes all teeth nearly equal, subulate, 3-4 mm. Petals pale yellow or whitish, often purplish suffused; standard 12-13 × 4-5.5 mm, narrowly oblong-elliptic; wings 11-12 mm; keel 11-12 mm. Legumes with a stipe 4-5 mm, ellipsoid, 1-1.5 cm, 4-5 mm high and 2-3 mm wide, keeled ventrally and dorsally; valves covered with subappressed to ascending black and white hairs up to 1 mm.
Subalpine to alpine zones; 2700-5200 m. Gansu, Qinghai, Si-chuan, Xizang [Bhutan, India (Sikkim)].
多花黃耆生長環境
生長於海拔2600-4300米的高山草坡或灌叢下。[3]
多花黃耆分布範圍
錫金有分布。