蓮山黃耆檢視原始碼討論檢視歷史
| 蓮山黃耆 |
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中文學名:蓮山黃耆 拉丁學名:Astragalus leansanicus Ulbr. 界:植物界 門:被子植物門 Angiospermae 綱:雙子葉植物綱 Dicotyledoneae 亞 綱:原始花被亞綱 Archichlamydeae 目:薔薇目 Rosales 亞 目:薔薇亞目 Rosineae 科:豆科 Leguminosae 亞 科:蝶形花亞科 Papilionoideae 族:山羊豆族 TRIB. Galegeae 屬:黃耆屬 Astragalus 亞 屬:裂萼亞屬 Subgen. Cercidothrix 種:蓮山黃耆 |
蓮山黃耆（lián shān huáng qí，學名：Astragalus leansanicus Ulbr.）為豆科黃耆屬下的一個種。產陝西、甘肅（南部）、四川（劍閣一巫溪）。生於海拔1000-2200米之間河灘地及田埂上。 [1]
蓮山黃耆形態特徵
多年生草本，高20-40厘米。 莖叢生，多分枝，有條棱，疏被白色毛。
羽狀複葉有9-17片小葉，長4-5厘米，具短葉柄；托葉基部合生，膜質，三角形漸尖，長3-7毫米，無毛；小葉狹橢圓形或狹披針形，長5-10毫米，寬1.5-4毫米，先端鈍或稍尖，基部寬楔形，上面無毛或疏被毛，下面疏被白色粗毛，無柄或近無柄。
總狀花序生6-15花，排列緊密；總花梗與葉等長或稍長，疏被白色毛；苞片膜質，卵形，被白色毛，邊綠具黑色或白色毛；花萼鍾狀管形，長7-8毫米，疏被白色或黑色毛，萼齒鑽形，長為萼筒的1/3；
花冠淡紅色或藍紫色，旗瓣長12-15毫米，寬橢圓形，先端微凹，基部稍狹，瓣柄不明顯，翼瓣較旗瓣短，瓣片先端微凹，較瓣柄稍長，龍骨瓣較翼瓣短，瓣片半橢圓形，較瓣柄稍長；子房被疏毛，無柄或幾無柄，含多數胚珠。
莢果細圓柱形，長約3厘米，略彎曲，假2室，疏被粗毛或近無毛。[2]
種子腎形，橄欖色。 花期5-6月，果期6-9月 。[3]
Astragalus leansanicus Ulbr. in Bot. Jahrb. 36 (Beibl. 82): 62. 1905; Simps. in Not. Roy. Bot. Gard. Edinb. 8: 261. 1915; Pet. -Stib. in Acta Hort. Gothob. 12: 62. 1937-1938; 中國主要植物圖說·豆科387. 圖374. 1955; S. B. Ho in Bull. Bot. Res. 3 (1): 43. 1983. ——A. srevenianus auct. non DC.: Ulbr. op. cit. 63. 1905.
Plants up to 40 cm tall, covered with appressed, mostly ± medifixed, in vegetative parts only white hairs up to 1 mm. Stems several to numerous, very sparsely to loosely hairy. Leaves 3-6 cm; stipules 5-7 mm, very shortly adnate to petiole, high vaginate-connate behind stem, glabrous or ciliate; petiole 0.5-1 cm, like rachis loosely hairy; leaflets in 5-8 pairs, ± nar-rowly elliptic, 5-10(-15) × 1.5-4(-6) mm, abaxially sparsely to loosely hairy, adaxially glabrous or with few hairs, apex obtuse to emarginate. Racemes rather densely 6-15-flowered; pedun-cle 6-10 cm, sparsely white hairy; bracts 2-4 mm, sparsely ciliate with subbasifixed to basifixed white and black hairs. Ca-lyx 5-6 mm, sparsely to loosely covered with strongly asym-metrically to nearly symmetrically bifurcate black hairs 0.3-1 mm and with mostly fewer and slightly longer, strongly asym-metrically bifurcate white hairs up to 1.2 mm; teeth 1-2 mm. Petals purple; standard obovate, ca. 14 × 5-6 mm, apex emar-ginate; wings 12-13 mm; keel ca. 10 mm. Legumes sessile, erect, linear, straight or very slightly curved, 25-30 mm, ca. 2 mm high and wide, with a straight beak 1-2 mm, 2-locular; valves sparsely covered with appressed white hairs 0.5-1.2 mm.
● 1000-2200 m. Gansu, Shaanxi, Shanxi.
蓮山黃耆生長環境
生長於海拔1000-2200米之間河灘地及田埂上。 [4]