窄翼黃耆檢視原始碼討論檢視歷史
窄翼黃耆 |
中文學名:窄翼黃耆 拉丁學名:Astragalus degensis 別 稱:窄翼黃耆,窄翼黃芪, 洛隆黃芪,窄翼黃蓍 界:植物界 門:被子植物門 綱:雙子葉植物綱,又稱木蘭綱 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 |
窄翼黃耆(zhǎi yì huáng qí,學名:Astragalus degensis)為豆科黃芪屬的植物,為中國的特有植物。產四川西部(德格、巴塘、鄉城)、西藏東部(江達、昌都)。生於海拔3700-4200米的高山櫟林及冷杉林下或草坡中。 [1]
窄翼黃耆形態特徵
多年生草本。根粗壯,直伸,直徑可達2.5厘米。
莖直立,高50-100厘米,具條紋;被稍開展的白色柔毛或混生黑色毛。
羽狀複葉有17-25片小葉,長5-12厘米,具短柄;托葉草質,離生,線狀披針形,長6-10毫米,具緣毛;小葉長圓形或長圓狀披針形,長5-18毫米,寬3-6毫米,先端鈍,具凸尖頭,基部鈍圓或寬楔形,上面被伏貼柔毛,下面毛較密。
總狀花序腋生,生多數花,稍稀疏;總花梗比葉長;苞片線形,長4-6毫米,小苞片缺;花梗長3-4毫米,連同花序軸被黑色柔毛或近下部混生白色毛;花萼鍾狀,長4-5毫米,外面被黑色伏貼柔毛,萼齒鑽形,長1-2毫米;
花冠淡紫色,旗瓣狹倒卵形,反折,長10-12毫米,先端鈍,基部漸狹,翼瓣長8-10毫米,瓣片線狀長圓形,寬約1毫米,基部具短耳,瓣柄長約5毫米,龍骨瓣與旗瓣近等長,瓣片半卵形,最寬處約3毫米,瓣柄長約5毫米;子房被黑毛或混生白色柔毛,具柄。
莢果梭狀卵形,長15-18毫米,寬4-6毫米,兩端尖,密被黑毛或混生白色柔毛,果頸長4-6毫米;種子2-4顆。
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.
窄翼黃耆生長環境
窄翼黃耆生長於海拔3700-4200米的高山櫟林及冷杉林下或草坡中。 [3]
窄翼黃耆分布範圍
窄翼黃耆產於四川西部(德格、巴塘、鄉城)、西藏東部(江達、昌都)。
模式標本采自四川德格。