A taxonomic synopsis of the genus Campeiostachys Drobov

作     者：Bernard R. BAUM Chi YEN Alex V. AGAFONOV 

作者机构：Agriculture and Agri-Food Canada Triticeae Research Institute Sichuan Agricultural University Central Siberian Botanical Garden 

出 版 物：《Journal of Systematics and Evolution》 (植物分类学报(英文版))

年 卷 期：2011年第49卷第2期

页      面：146-159页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 0901[农学-作物学] 0902[农学-园艺学] 0713[理学-生态学] 

基　　金：the Program for Chang Jiang Scholar and Innovative Research Team in University (No. IRT 0453) of the Ministry of Education of China for financial support 

主　　题：Elymus genome key to species morphology. 

摘      要：We have classified 11 species recently recognized as belonging to the genus Elymus into a resurrected and legitimate genus Campeiostachys Drobov according to the International Code of Botanical Nomenclature. Our action is based on the rationale of monophyly, discrimination, and practicality discussed in detail. Currently Elymus contains a vast number of species with different genomes which often, but not always, can be differentiated by cytological and molecular features, but are difficult to separate by traditional morphology, although an effort to do so is detailed and discussed. This difficulty can be attributed to the dominance effect of a particular genome on the other genome(s) present. Campeiostachys, with genome constitution StStHHYY, is a recent addition to a number of genera recently segregated out of Elymus, i.e. Douglasdeweya (StStPP), Kengyilia (StStPPYY), and Roegneria (StStYY, StStStStYY). A key to Campeiostachys taxa is provided, along with taxa descriptions, distribution, nomenclature, and cytology. Nineteen nomenclatural novelties, or combinations, resulted from this work, 10 species names, and nine varietal names.