長序黃耆
長序黃耆 |
中文學名:長序黃耆 拉丁學名:Astragalus longiscapus Ni et P. C. Li in Acta Phytotax. 別 稱:長梗黃耆 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:密花亞屬 組:矮莖組 |
長序黃耆(cháng xù huáng qí,學名:Astragalus longiscapus Ni et P. C. Li in Acta Phytotax.)為豆科黃芪屬的植物,是我國的特有植物。產我國西藏南部(聶拉木、錯那)。生於海拔4050-4100米的山坡草地及石灘上。 [1]
目錄
長序黃耆形態特徵
整體 多年生草本,幾無莖。
葉 羽狀複葉有9-11片小葉,長4-9厘米;葉柄細長,長3-7厘米,無毛;托葉草質,長圓形,有數條脈,幼時疏被白色短柔毛,後變無毛,與葉柄貼生達中部以上;小葉長圓形或狹長圓形,長5-8毫米,上面無毛,下面密被白色貼伏短柔毛;小葉柄很短。
花
總狀花序密而短,生8-10花;總花梗生於基部葉腋,長約10厘米,較葉長,花葶狀,疏被白色伏貼短柔毛;花梗極短;花萼鍾狀,長4-5毫米,被黑色長柔毛,萼筒長3-3.5毫米,萼齒鑽狀,長不及筒部的1/2;
花冠青紫色,長7-8毫米;旗瓣寬倒卵形,長約7毫米,瓣片近圓形,長5-6.5毫米,寬5-6毫米,下部漸狹為楔狀短瓣柄;翼瓣與旗瓣近等長,瓣片倒卵狀長圓形,長5-6毫米,寬1.5-2毫米,先端鈍圓,基部耳向外展,瓣柄長2-2.5毫米,龍骨瓣稍短於翼瓣和旗瓣,長約6毫米,瓣片近倒卵形,長3-3.5毫米,寬約為翼瓣的2倍,瓣柄長約2毫米;子房有短柄,僅縫線處被疏毛,柄長不及1毫米。 [2]
莢果未見。花期6月。 [3]
Plants 20-35 cm tall. Stems several, loosely covered with spreading rigid white hairs and below nodes with black hairs 0.2-0.3 mm. Leaves 3-8 cm; stipules 3-7 mm, very shortly adnate to petiole, otherwise free, sparsely white and/or black hairy; petiole 0.3-2 cm, together with rachis white or black and white hairy like stem; leaflets in 6-9 pairs, narrowly elliptic, (7-)9-27 × 2-7 mm, at base of petiolule with crowded, minute, sessile glands, abaxially densely to rather densely covered with appressed to subappressed or partly ascending hairs up to 0.5 mm, adaxially glabrous, apex obtuse to subacute or sometimes slightly retuse. Racemes 2-5 cm, densely many flowered; pe-duncle 3-6 cm, in lower part loosely covered with spreading white and black hairs up to 0.3 mm, in upper part mostly black hairy; bracts 2-3 mm, sparsely black hairy. Calyx 3-4 mm, densely covered with ascending predominantly black hairs up to 0.5 mm; teeth 1-2 mm. Petals pale pink, violet, or white; standard obovate, 8-10 × ca. 5 mm, apex rounded to slightly emarginate; wings 7-8 mm, limbs narrowly obovate, rounded at apex; keel ca. 5 mm. Legumes 4-5 mm, 2.5-3 mm high, 2-loc-ular; valves transversely rugose, densely covered with white hairs, with a few black hairs mixed in. Seeds 2.
● Lakeshores; ca. 3100 m. Qinghai (Qinghai Hu).
長序黃耆生長環境
生長於海拔4050-4100米的山坡草地及石灘上。 [4]