The Taxonomical Study Of Astragalus L.in Inner Mongolia

In this dissertation, author review and summarize senior's study of Astragalus L., on the basis of this, study the plants of Astragalus L. in Inner Mongolia by means of morphology, polynology and cladistics taxonomy.Through cladistics taxonomy study, the acceptable evolutionary cladogram of Astragalus L. in Inner Mongolia has been obtained.Through , assical classification and polynology study shows that: (1) A. mongholicus Bge. is species; A. membranaceus Bge. and A. penduliflorus Lam. are different species. (2) A. hoantchy Franch. belongs to the Subgen. Phaca(L.) Bge. (3) A. chingianus Pet.-Stib. is the synonym of A. alaschanus Bge. (4)A. grubovii Sancz., A. pseudoscaberrimus Wang et Tang ex S. B. Ho and A. alaschanensis H. C. Fu are different species. (5)A. adsurgens Pall, and A. inopinatus Boriss.are different species. (6)A. melilotoides Pall. var. tenuis Ledeb. is the varietas of A. melilotoides Pall. (7)A. tataricus Franch. is the synonym of A. zacharensis Bge.; A. hulunensis P. Y. Fu et Y. A. Chen and A. zacharensis Bge. are different species. (8)A. monophyllus Bge. ex Maxim, and A. macrotrichus Pet.-Stib. are distinct species. (9) A. lioui Tsai et Yu is the synonym of A. pavlovii B. Fedtsch. et N. Basil.In Inner Mongolia, the plants recorded of Astragalus L. were 40 species, 7 varietas and 1 cultivar in "Flora of Inner Mongolia"(2ed. 3vol.). Through the author's research, the plants of the genus Astragalus L. in the region are 45 species, 5 varietas, 1 forma and 1 cultivari. Specially, through the research, author find 1 forma nova and 1 combinatio nova. Forma nova is Astragalus adsurgens Pall. f. xilinensis J. J. Ma et Sh. Chen f. nov.; combinatio nova is Astragalus micranthus(Ulzij.) J. J. Ma et Sh. Chen comb. nov.