中甸鸢尾的分类位置及其一新变型  

Study on the Taxonomic Position of Iris subdichotoma and a New Form

作　　者：沈云光[1] 王仲朗[1] 管开云[1] 赵毓棠[2] 

机构地区：[1]中国科学院昆明植物研究所,云南昆明650204 [2]东北师范大学生命科学学院,吉林长春130024

出　　处：《云南植物研究》2004年第5期487-492,共6页Acta Botanica Yunnanica

摘　　要：中甸鸢尾 (IrissubdichotomaY .T .Zhao)最初被置于野鸢尾亚属 (Subgen Pardanthopsis(Hance)Baker)中 ,这是基于中甸鸢尾 (IrissubdichotomaY .T .Zhao)的植株形态与该亚属的野鸢尾 (I dichotomaPall.)相似。此后 ,由于在外花被上发现了鸡冠状附属物 ,1999年董晓东等将其移至鸡冠状附属物亚属 (Subgen CrossirisSpach)中。但是我们根据中甸鸢尾的植株基部具有毛发状老叶残留纤维 ,根状茎极短 ,花茎自叶丛旁侧抽出 ,开花习性 ,以及花粉外壁纹饰等特征与尼泊尔鸢尾亚属 (Subgen Nepalensis (Dykes)Lawr.)极其相近 ,认为将其置于尼泊尔鸢尾亚属中更为妥当。此外 ,还发现了一个中甸鸢尾的白花变型。First,Iris subdichotoma Y.T.Zhao was put in Subgen.Pardanthopsis (Hance) Baker in 1985 as its appearance is similar to I.dichotoma Pall.,and then it was moved into Subgen.Crossiris Spach by Dong et al.in 1999,when a clear crested appendage on outer perianth was noticed from other materials.But we prefer to regard it as a member of Subgen.Nepalensis (Dykes) Lawr.by reasons of possessing slender residues of withered leaves at its base,short rhizome,scape arising beyond basic leaves,blooming habit,sculpture of pollens.In addition,a white flower form of I.subdichotoma was found in wild.

关 键 词：中甸鸢尾 花部形态 植物分类学 云南 

分 类 号：Q949[生物学—植物学]