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中国黄耆属(豆科)丁字毛类群2新种——额尔齐斯黄耆和沙地黄耆
引用本文:常朝阳,徐朗然.中国黄耆属(豆科)丁字毛类群2新种——额尔齐斯黄耆和沙地黄耆[J].西北植物学报,2007,27(1):168-172.
作者姓名:常朝阳  徐朗然
作者单位:1. 西北农林科技大学,生命科学学院,陕西杨陵,712100;陕西秦岭植物园,西安,710063
2. 西北农林科技大学,生命科学学院,陕西杨陵,712100
3. 慕尼黑大学,系统植物学研究所,慕尼黑,80638,德国
基金项目:国家自然科学基金项目(30270106);国家自然科学基金重大国际合作项目(39899400,30499340);中国科学院知识创新工程重要方向项目(KSCX-SW-122);中国科学院“西部之光”项目(Supported by the National Natural Science Foundation of China,Grant Nos.30270106,39899400,30499340,a Key Knowledge Innovation Project of the Chinese Academy of Sciences,Grant No.KSCX-SW-122,and “Hope of West China” Proiect of the Chinese Academy of Sciences)
摘    要:描述了产于中国新疆的黄耆属(Astragalus)丁字毛类群2新种,即额尔齐斯黄耆(Astragalus eerqisiensis Z.Y.Chang,L. R. Xu & D.Podlech)和沙地黄耆(A.shadiensis L. R. Xu,Z.Y.Chang & D.Podlech).其中,额尔齐斯黄耆仅见于新疆布尔津县的额尔齐斯河流域,与哈巴河黄耆(A.habaheensis)近缘,区别在于前者小叶菱形、倒卵形或椭圆形,长15~25(30)mm,宽(3)7~12(15)mm,旗瓣长20~22(25)mm,翼瓣顶端2裂;沙地黄耆产于新疆托克逊县东北部,散生于沙地荒漠,形态上与变异黄耆(A. variabilis Bunge ex Maxim.)接近,区别在于小叶5~7(9)枚而非11~19枚,旗瓣在中部收缩,植株全体被灰色毛而呈灰色.2新种均系中国特有种,其中额尔齐斯黄耆隶属于乌拉尔组(A. Sect.Helmia Bunge),沙地黄耆隶属于旱生组A. Sect.Craccina(Stev.)Bunge].

关 键 词:黄耆属  额尔齐斯黄耆  沙地黄耆  豆科  新种  新疆  中国
文章编号:1000-4025(2007)01-0168-05
修稿时间:2006-10-18

Astragalus eerqisiensis and A. shadiensis, Two New Species of Leguminosae from Xinjiang, China
DIETER Podlech,CHANG Zhao-yang,XU Lang-ran,DIETER Podlech.Astragalus eerqisiensis and A. shadiensis, Two New Species of Leguminosae from Xinjiang, China[J].Acta Botanica Boreali-Occidentalia Sinica,2007,27(1):168-172.
Authors:DIETER Podlech  CHANG Zhao-yang  XU Lang-ran  DIETER Podlech
Abstract:Astragalus eerqisiensis Z. Y. Chang, L. R. Xu & D. Podlech and A. shadiensis L. R. Xu, Z. Y.Chang & D. Podlech (Leguminosae) are described and illustrated from Xinjiang,China. Of these,A. eerqisiensis is known only from Burqin County, Xinjiang, and closely related to A. habaheensis, but differs by having rhomboid,obovate or elliptic leaflets which are 15~25(30) mm long, (3) 7~12(15) mm broad,and standard 20~22(25) mm long,wings bilobed at apex. A. shadiensis occurs in Tuokexun County,Xinjiang,and is similar to A. variabilis Bunge ex Maxim.,but differs by its leaves with 5~7(9) leaflets (not 11~19),standard constrict in the middle,and plant very distinctly gray in color. Both species are endemic to China,with A. eerqisiensis belonging to Sect. Helmia Bunge, and A. shadiensis to Sect. Craccina (Stev.)Bunge.
Keywords:Astragalus  Astragalus eerqisiensis Z  Y  Chang  L  R  Xu & D  Podlech  Astragalus shadiensis L  R  Xu  Z  Y  Chang & D  Podlech  Leguminosae  new species  Xinjiang  China
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