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东天山黄耆 |
中文学名:东天山黄耆 拉丁学名:Astragalus borodinii Krassn. 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:裂萼亚属 组:糙叶组 |
东天山黄耆(dōng tiān shān huáng qí,学名:Astragalus borodinii,异名 Astragalus projecturus Astragalus hypogaeus var. borodinii )是豆科黄芪属的植物。产新疆(阿勒泰布尔津戈壁滩上)。生于多石地带的山坡上。天山也有分布。 [1]
东天山黄耆形态特征
多年生丛生小草本,高3-7厘米。 茎极短缩,地下部分有短分枝。
羽状复叶有3-5片小叶,长2-5厘米;叶柄纤细,被伏贴毛;托叶基部与叶柄贴生,三角状卵圆形,密被柔弱为长毛;小叶倒卵状长圆形或卵圆形,先端钝或具短尖,长8-20毫米,两面密被伏贴毛,灰绿色。
总状花序生2-8花,生于基部叶腋,几无总花梗;苞片线状披针形,较花萼稍短,被白色长毛;花萼管状,长12-15毫米,密被白色长毛,萼齿线状钻形,长为萼筒的1/5-1/4;
花冠淡粉红色,旗瓣长27-30米,瓣片倒卵状长圆形,先端微凹,近基部渐狭,翼瓣长22-27毫米,瓣片线形,先端近圆形,与瓣柄等长,龙骨瓣较翼瓣短,瓣片较瓣柄短;子房被白色绒毛。
荚果椭圆形,长4-5毫米,宽3-4毫米,近顶端突然收狭成短缘,腹缝线稍具龙骨状凸起,背缝线微凹或扁平,革质,密被半开展的白色毛,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].
东天山黄耆生长环境
东天山黄耆生长于多石地带的山坡上。
东天山黄耆分布范围
东天山黄耆产自于新疆(阿勒泰布尔津戈壁滩上),天山也有分布。[3]