中甸黄耆
中甸黄耆 |
中文学名:中甸黄耆 拉丁学名:Astragalus forrestii Simps. 界:植物界 门:被子植物门 纲:双子叶植物纲 亚 纲:原始花被亚纲 目:蔷薇目 亚 目:蔷薇亚目 科:豆科 亚 科:蝶形花亚科 族:山羊豆族黄耆亚族 属:黄耆属 亚 属:华黄耆亚属 组:黑毛组 |
中甸黄耆(zhōng diàn huáng qí,学名:Astragalus forrestii Simps.)是豆科黄芪属的植物,是中国的特有植物。分布于中国大陆的云南等地,生长于海拔3,000米至3,200米的地区,常生长在山坡草地。 [1]
目录
中甸黄耆形态特征
多年生草本。 茎直立,高50-150厘米,具条棱,散生白色混有黑色短柔毛,幼时毛较密。
奇数羽状复叶,具33-43片小叶,长5-14厘米;叶柄长0.5-1.5厘米,向上逐渐变短;托叶近膜质,离生,三角状卵形,长8-12毫米,宽4-6毫米,下面散生白色柔毛;小叶长圆形,长5-20毫米,宽2-6毫米,先端钝圆或微凹,具小尖头,基部近圆形,上面近无毛,下面被白色伏贴柔毛,具短柄。
总状花序生多数花,密集,花序轴长2-8厘米,花后延伸;总花梗腋生,较叶短;苞片线形,长4-10毫米,下面被白色或黑色柔毛;花梗较短;
花萼钟状,长4-5毫米,外面被白色或黑色短伏贴柔毛,萼齿披针形,长1-1.5毫米;小苞片2,宿存;
花冠黄色,旗瓣倒卵形,长9-10毫米,宽约5毫米,先端微凹,基部渐狭成瓣柄,翼瓣较旗瓣稍短,瓣片长圆形,宽约2毫米,具短耳,瓣柄与瓣片近等长,龙骨瓣较翼瓣稍短,瓣片半卵形,具短耳;子房无毛,具短柄。
荚果半卵形,膨胀,长10-12毫米,近假2室,果颈较宿萼稍短。
种子6-8颗,肾形,栗褐色,长约2毫米。 花果期7-8月。 [2]
Astragalus forrestii Simps. in Not. Roy. Bot. Gard. Edinb. 8: 124. 1915; Pet. -Stib. in Acta Hort. Gotbob. 12: 32. 1937-1938; 中国主要植物图说·豆科380. 1955.
Plants 45-70 cm tall, with mostly ± curly hairs 0.2-0.5(-0.8) mm. Stems several, branched, to 6 mm thick, loosely to densely covered with very short black and somewhat longer white hairs. Leaves 8-15 cm, subsessile; stipules 8-12 mm, sparsely to loosely white and black hairy; rachis loosely to rather densely mostly black hairy; leaflets in 15-19 pairs, nar-rowly elliptic, 8-23 × 3-8 mm, abaxially loosely appressed mostly white hairy, adaxially glabrous. Racemes 4-7 cm, very densely many flowered, later elongating up to 10 cm; peduncle 3-8 cm, ± densely black hairy; bracts linear-acute, 7-10 mm, predominantly black hairy. Bracteoles sometimes present, line-ar, 2-3 mm. Calyx 5-6 mm, mostly glabrous at base, toward teeth with a few black hairs or all over ± loosely predominantly black hairy; teeth unequal, 1-2.5 mm. Petals green-yellow; standard rhombic-obovate, 10-12 × 6-7 mm, apex emarginate; wings and keel 9-10 mm. Legumes with a stipe up to 2 mm, 10-12 mm, inflated, 2-locular, glabrous.
● 2700-3300 m. Sichuan, W Yunnan.
中甸黄耆生长环境
生长于海拔3000-3200米间的山坡草地。 [3]