厚葉黃耆
厚葉黃耆 |
中文學名:厚葉黃耆 拉丁學名:Astragalus crassifolius Ulbr. 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:疏花組 |
厚葉黃耆(hòu yè huáng qí,學名:Astragalus crassifolius)是豆科黃芪屬的植物,為我國的特有植物。產四川(西部)。生於海拔4000米以上的石礫山坡或草地。 [1]
目錄
厚葉黃耆形態特徵
多年生草本。 根粗壯,直伸。 莖多數,鋪散狀,高5-12厘米,無毛,帶紫紅色,具細條紋。
羽狀複葉有13-19片小葉,長4-8厘米;葉柄長2-4厘米;托葉膜質,離生,寬卵形或近圓形,長3-6毫米,無毛,帶紫色;小葉近圓形、寬心形或近腎形,長4-14毫米,寬5-15毫米,先端鈍圓或微凹,基部近圓形,兩面無毛。
總狀花序近頂生,生3-5花;總花梗比葉短,長1-4厘米;苞片膜質,長圓狀卵形,長約5毫米,寬2.5-3毫米,上部帶紫色,疏被黑色柔毛或近無毛;花萼鍾狀,長5-6毫米,被褐色或黑色柔毛,萼齒披針形,長約2毫米;
花冠青紫色,旗瓣近圓形,長約8毫米,先端鈍或微凹,基部漸狹;翼瓣與旗瓣近等長,瓣片長圓形,先端鈍或微凹,基部具短耳,瓣柄與瓣片近等長,龍骨瓣長7-8毫米,瓣片半圓形,瓣柄與瓣片近等長;
子房狹卵形,具短柄,被黑色短柔毛。
莢果寬卵形,帶紅褐色,長12-14毫米,寬7-8毫米,先端具短喙,基部圓形,近無果頸,被黑色短柔毛,不完全假2室;
種子4顆,腎形,褐色,長約3毫米。 花果期7-8月。 [2]
Astragalus crassifolius Ulbr. in Fedde Repert. Sp. Nov. Beih. 12: 421. 1922; Hand. -Mazz. Symb. Sin. 7: 558. 1933; Pet. -Stib. in Acta Hort. Gothob. 12: 39. 1937-1938; 中國主要植物圖說·豆科377. 1955.
Plants caespitose, up to 13 cm tall, very sparsely covered with subappressed hairs 0.1-0.3 mm. Stems several, up to 6 cm, glabrous. Leaves 3-5 cm; stipules ovate to suborbicular, 3-7 mm, glabrous; petiole 1.5-2.5 cm, like rachis somewhat flat-tened, glabrous; leaflets thickish, in 5-9 pairs, mostly touching, suborbicular or widely cordate, 3-7 × 3-7 mm, sometimes also reniform and wider than long, glabrous on both surfaces or sparsely white hairy abaxially, base widely rounded to retuse or slightly cordate, apex widely obtuse to slightly acute. Racemes rather densely 7-12-flowered; peduncle 3-8 cm, very sparsely to loosely covered with white and toward raceme black hairs; bracts elliptic, 5-7 mm, black hairy. Calyx 6-7 mm, rather densely black hairy; teeth 3-3.5 mm. Standard suborbicular, 9-10.5 × 7-7.5 mm, apex incised; wings 9-10 mm; keel ca. 7 mm. Legumes subsessile, obliquely ovoid, 10-13 mm, 6-7 mm high and 4-6 mm wide, keeled ventrally, narrowly grooved dor-sally, very shortly acuminate, nearly fully 2-locular; valves thin, membranous, sparsely covered with ascending white hairs up to 1.5 mm and very short black hairs.
● Alpine meadows; 3000-4900 m. Sichuan, Xizang, Yunnan.
厚葉黃耆生長環境
生長於海拔4000米以上的石礫山坡或草地。 [3]