四川重楼属(延龄草科)一新变种——峨眉重楼  

Paris polyphylla var. emeiensis H. X. Yin, H. Zhang & D. Xue, a new variety of Trilliaceae from Sichuan, China

作　　者：尹鸿翔[1] 张浩[1] 薛丹[1] 

机构地区：[1]四川大学华西药学院,成都610041

出　　处：《植物分类学报》2007年第6期822-827,共6页Acta Phytotaxonomica Sinica

基　　金：国家教育部博士点科研基金(20020610089)~~

摘　　要：报道了四川峨眉山地区延龄草科Trilliaceae重楼属Paris一新变种——峨眉重楼Paris polyphylla Smith var. emeiensis H.X.Yin,H.Zhang & D.Xue。该变种与宽瓣重楼P.polyphylla var.yunnanensis (Franch.)Hand.-Mazz.相似,区别在于叶柄较短,长2–5mm,叶片较窄,披针形,宽1.5–2.5cm,花梗短,长6–10(–13)mm,花瓣丝状,长2–3cm,药隔突出部分较短,长0.2–0.5mm。高效液相色谱法对新变种及多叶重楼P.polyphylla Smith各变种的甾体皂苷类成分的对比分析显示,宽瓣重楼以薯蓣皂苷为主,长药隔重楼P.polyphylla var.pseudothibetica H.Li以偏诺皂苷为主,而峨眉重楼、多叶重楼P.polyphylla var.polyphylla、华重楼P.polyphylla var.chinensis(Franch.)Hara、狭叶重楼P.polyphylla var.stenophylla Franch.、宽叶重楼P.polyphylla var.latifolia F.T.Wang & C.Yu Chang、白花重楼P.polyphylla var.alba H.Li & R.J.Mitchell所含皂苷均为微量,由此揭示了峨眉重楼同近缘种之间的关系。Paris polyphylla Smith var. emeiensis H. X. Yin, H. Zhang ＆ D. Xue, a new variety of Paris from Mt. Emei, Sichuan, China, is described and illustrated. The variety is similar to P polyphylla var. yunnanensis （Franch.） Hand.-Mazz., but differs by having petioles shorter, 2-5 mm long, leaves narrower, lanceolate, 1.5-2.5 cm wide, pedicels short, 6-10 （-13） mm long, petals filiform, 2-3 cm long, free portion of connective shorter, 0.2-0.5 mm long. The constituent of steroid saponin from the new variety and other varieties of P polyphylla Smith were compared by HPLC analysis. The main constituents of steroid saponin from the variety yunnanensis and P polyphylla var. pseudothibetica H. Li were diosgenin glycoside and pennogenin glycoside, respectively. However, steroid saponins from the new variety, P polyphylla var. polyphylla, P. polyphylla var. stenophylla Franch, P polyphylla var. latifolia F. T. Wang ＆ C. Yu Chang, and P. polyphylla var. alba H. Li ＆ R. J. Mitchell are trace so as to elucidate the relationship between the new variety and its relative taxa.

关 键 词：重楼属 峨眉重楼 延龄草科 新变种 甾体皂苷 四川 中国 

分 类 号：Q949[生物学—植物学]