By PetersonPaul M.Smithsonian Institution   Department of Botany   National Museum of Natural History   Washington D.C. 20013-7012   U.S.A.;   Email: peterson@si.edu   RomaschenkoKonstantinSmithsonian Institution   Department of Botany   National Museum of Natural History   Washington D.C. 20013-7012   U.S.A.   M.G. Kholodny Institute of Botany   National Academy of Sciences   Kiev 01601   Ukraine   ArrietaYolanda HerreraInstituto Politécnico Nacional   CIIDIR Unidad Durango-COFAA   Durango   C.P. 34220   Mexico   in Taxon

ISSN:0040-0262|64|3|445-467

International Association for Plant Taxonomy‎(2015)‎

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