团垫黄耆
团垫黄耆 |
中文学名:团垫黄耆 拉丁学名:Astragalus arnoldii Hemsl. 界:植物界 门:被子植物门 纲:双子叶植物纲 目:豆目 科:豆科 属:黄芪属 种:团垫黄耆 |
团垫黄耆(tuán diàn huáng qí,学名:Astragalus arnoldii Hemsl.)是豆科黄芪属的植物,是中国的特有植物。分布于中国大陆的青海、西藏等地,生长于海拔4,600米至5,100米的地区,一般生长在山坡和河滩上。 [1]
目录
团垫黄耆形态特征
多年生垫状草本,高5-10厘米。茎极短缩,多数,被灰白色毛。
羽状复叶有5-7片小叶,长1-1.5厘米;托叶小;与叶柄贴生,膜质,被白色长毛;小叶狭长圆形,长2-5毫米,先端渐尖,基部钝圆,两面被灰白色毛,近无柄。
总状花序的花序轴短缩,生5-6花;总花梗与叶等长或稍长,被伏贴的白毛;苞片线状披针形,长2-3毫米,膜质;花萼钟状,长2.5-5毫米,密被黑白混生的伏贴毛,萼齿三角形或狭披针形,长为萼筒的1/3;
花冠蓝紫色,旗瓣宽倒卵形,长7-10毫米,宽5-8毫米,先端微凹,中部稍缢缩,下部渐狭成楔形的短瓣柄,翼瓣长7-8毫米,瓣片长圆形,较瓣柄稍长,龙骨瓣较翼瓣短,瓣片与瓣柄等长;子房有短柄,密生软毛。
荚果长圆形,微弯,长约5毫米,半假2室,被白毛。 花期7月,果期8-9月。[2]
Astragalus arnoldii Hemsl. et Pears. in Journ. Linn. Soc. Bot. 35: 172. 1902; S. B. Ho in Bull. Bot. Res. 3 (1): 61. 1983; 西藏植物志2: 805. 图259. 1985.——A. culcitiformis P. C. Li et Ni in Acta Phytotax. Sinica, 17: 106. f. 4. 1979.
Astragalus arnoldii f. albiflorus Y. H. Wu; A. culcitiformis P. C. Li & C. C. Ni; A. li-nii Gómez-Sosa; A. monticola P. C. Li & C. C. Ni (1979), not Philippi (1864); A. roborovskyi N. Ulziykhutag.
Plants 3-5 cm tall, nearly acaulescent, forming compact mats; hairs appressed, mostly ± medifixed, in vegetative parts white, 0.5-1 mm. Leaves 1-2 cm; stipules 3-5 mm, adnate to petiole up to 1/2, shortly connate behind stem, loosely to densely white hairy; petiole 0.8-1.5 cm, like slender rachis rather densely hairy; leaflets in 1-3 pairs, 1-5 × 0.5-1 mm, often folded, both surfaces rather densely hairy. Racemes rather densely 4-8-flowered, somewhat elongated in fruit; peduncle 1-2.5 cm, slender, rather densely hairy; bracts 1.5-2 mm, with few black hairs. Calyx 3-4 mm, loosely to rather densely pre-dominantly black hairy; teeth 0.5-1 mm. Petals purplish to violet; standard nearly orbicular, 6-8 × 4-5 mm, apex emargi-nate; wings 6-7.5 mm; keel 5.5-6.5 mm. Legumes sessile, slightly curved, (6-)8-10 mm, strongly inflated, with a slender beak 1-1.5 mm, nearly 1-locular; valves villous with white hairs.
High alpine slopes; 4000-5500 m. Qinghai, Xinjiang, Xizang [In-dia (Sikkim), Kashmir, Nepal].
团垫黄耆生长环境
生长于海拔4600-5100米的山坡及河滩上。[3]
团垫黄耆分布范围
团垫黄耆系统位置
被子植物门 Angiospermae
双子叶植物纲 Dicotyledoneae
原始花被亚纲 Archichlamydeae
蔷薇目 Rosales
蔷薇亚目 Rosineae
豆科 Leguminosae
蝶形花亚科 Papilionoideae
山羊豆族 TRIB. Galegeae
黄耆亚族 SUBTRIB. Astragalinae
黄耆属 Astragalus
裂萼亚属 Subgen. Cercidothrix
中天山组 Sect. Chomutoviani