團墊黃耆
團墊黃耆 |
中文學名:團墊黃耆 拉丁學名:Astragalus arnoldii Hemsl. 界:植物界 門:被子植物門 綱:雙子葉植物綱 目:豆目 科:豆科 屬:黃芪屬 種:團墊黃耆 |
團墊黃耆(tuán diàn huáng qí,學名:Astragalus arnoldii Hemsl.)是豆科黃芪屬的植物,是中國的特有植物。分布於中國大陸的青海、西藏等地,生長於海拔4,600米至5,100米的地區,一般生長在山坡和河灘上。 [1]
目錄
團墊黃耆形態特徵
多年生墊狀草本,高5-10厘米。莖極短縮,多數,被灰白色毛。
羽狀複葉有5-7片小葉,長1-1.5厘米;托葉小;與葉柄貼生,膜質,被白色長毛;小葉狹長圓形,長2-5毫米,先端漸尖,基部鈍圓,兩面被灰白色毛,近無柄。
總狀花序的花序軸短縮,生5-6花;總花梗與葉等長或稍長,被伏貼的白毛;苞片線狀披針形,長2-3毫米,膜質;花萼鍾狀,長2.5-5毫米,密被黑白混生的伏貼毛,萼齒三角形或狹披針形,長為萼筒的1/3;
花冠藍紫色,旗瓣寬倒卵形,長7-10毫米,寬5-8毫米,先端微凹,中部稍縊縮,下部漸狹成楔形的短瓣柄,翼瓣長7-8毫米,瓣片長圓形,較瓣柄稍長,龍骨瓣較翼瓣短,瓣片與瓣柄等長;子房有短柄,密生軟毛。
莢果長圓形,微彎,長約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. 圖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].
團墊黃耆生長環境
生長於海拔4600-5100米的山坡及河灘上。[3]
團墊黃耆分布範圍
團墊黃耆系統位置
被子植物門 Angiospermae
雙子葉植物綱 Dicotyledoneae
原始花被亞綱 Archichlamydeae
薔薇目 Rosales
薔薇亞目 Rosineae
豆科 Leguminosae
蝶形花亞科 Papilionoideae
山羊豆族 TRIB. Galegeae
黃耆亞族 SUBTRIB. Astragalinae
黃耆屬 Astragalus
裂萼亞屬 Subgen. Cercidothrix
中天山組 Sect. Chomutoviani