世界樟科植物系统学研究进展

就上世纪90年代以来世界樟科植物系统学研究进展，从形态学、孢粉学、胚胎学、叶角质层研究、分子系统学以及生物地理学等6方面进行了综述性的回顾和展望。

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

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.