東天山黃耆
東天山黃耆 |
中文學名:東天山黃耆 拉丁學名:Astragalus borodinii Krassn. 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:裂萼亞屬 組:糙葉組 |
東天山黃耆(dōng tiān shān huáng qí,學名:Astragalus borodinii,異名 Astragalus projecturus Astragalus hypogaeus var. borodinii )是豆科黃芪屬的植物。產新疆(阿勒泰布爾津戈壁灘上)。生於多石地帶的山坡上。天山也有分布。 [1]
目錄
東天山黃耆形態特徵
多年生叢生小草本,高3-7厘米。 莖極短縮,地下部分有短分枝。
羽狀複葉有3-5片小葉,長2-5厘米;葉柄纖細,被伏貼毛;托葉基部與葉柄貼生,三角狀卵圓形,密被柔弱為長毛;小葉倒卵狀長圓形或卵圓形,先端鈍或具短尖,長8-20毫米,兩面密被伏貼毛,灰綠色。
總狀花序生2-8花,生於基部葉腋,幾無總花梗;苞片線狀披針形,較花萼稍短,被白色長毛;花萼管狀,長12-15毫米,密被白色長毛,萼齒線狀鑽形,長為萼筒的1/5-1/4;
花冠淡粉紅色,旗瓣長27-30米,瓣片倒卵狀長圓形,先端微凹,近基部漸狹,翼瓣長22-27毫米,瓣片線形,先端近圓形,與瓣柄等長,龍骨瓣較翼瓣短,瓣片較瓣柄短;子房被白色絨毛。
莢果橢圓形,長4-5毫米,寬3-4毫米,近頂端突然收狹成短緣,腹縫線稍具龍骨狀凸起,背縫線微凹或扁平,革質,密被半開展的白色毛,近1室或近假2室。 花期5-6月,果期6-7月。 [2]
Astragalus borodinii Krassn. Список Раст., Собр. В.Вост.Тяньшане 46. 1887; id. Script Bot. Hort. Univ. Petrop. 2: 15. 1889; Gontsch. et Boriss. in Kom. Fl. USSR 12: 581. t. 35 (1). 1946; Gamaiun. et Fisjun in Pavl. Φπ. Казахст. 5: 235. t. 31 (1). 1961; Czerep. Addit. Corrig. Kom. Fl. USSR 1-XXX 244. 1973; S. B. Ho in Bull. Bot. Res. 3 (1): 54. 1983.
Astragalus hypogaeus Ledebour var. borodinii (Krasnov) Krasnov; A. projecturus Sumnevicz.
Plants 3-10 cm tall, only white hairy. Leaves 2-5 cm; stip-ules 8-10 mm, adnate to petiole for 4-5 mm, sparsely covered with subappressed, subbasifixed to basifixed hairs and at mar-gins with spreading, basifixed cilia ca. 1 mm; petiole 1-3 cm, like rachis covered with ± medifixed, appressed hairs 0.8-1 mm; leaflets mostly in 2 pairs, obovate, 8-20 × 3-8 mm, both surfaces rather densely hairy like petiole. Racemes sessile, 2- or 3-flowered; bracts 10-12 × ca. 1.5 mm, densely hairy like stip-ules. Calyx 11-13 mm, densely covered with ascending to ± spreading, tangled, subbasifixed to basifixed hairs up to 2 mm; teeth 2.5-4 mm. Petals ?yellow; standard narrowly obovate, ca. 20 × 7 mm, apex slightly emarginate to rounded; wings ca. 15 mm, limbs rounded at apex; keel ca. 13 mm. Legumes 4-5 mm, 3-4.5 mm high, slightly compressed laterally, abruptly con-tracted into a beak ca. 1 mm, incompletely 2-locular to ± 1-locular; valves densely covered with subappressed hairs.
Xinjiang [Kazakhstan, Kyrgyzstan].
東天山黃耆生長環境
東天山黃耆生長於多石地帶的山坡上。