文章基本信息

标题：The taxonomic status of the Mexican oak Quercus undata (Fagaceae, Quercus, Section Quercus)
本地全文：下载
作者：Jeffrey R. Bacon ; Patricia Dolores Dávila-Aranda ; Richard Spellenberg 等
期刊名称：Revista Mexicana de Biodiversidad
印刷版ISSN：1870-3453
出版年度：2011
卷号：82
期号：4
出版社：Instituto de Biología
摘要：Quercus undata Trel. (Fagaceae, Quercus, Section Quercus) has a complex taxonomic and nomenclatural history. Intensive sampling of oaks at the type locality of Q. undata Trel. in Durango, Mexico and evaluation of herbarium specimens and plants in the field indicate that Q. undata represents variation in Quercus chihuahuensis Trel. in white oak communities where introgressive hybridization among Q. chihuahuensis, Q. grisea Liebm., and a third white oak, Q. arizonica Sarg. made species identification difficult. Endlich’s type specimen of Q. undata, as designated by Trelease, was apparently destroyed in bombing raids on Berlin during World War II, and we propose herein as lectotype the Trelease illustration of the type. An epitype is also designated in support of the lectotype, given that some features cannot be critically observed on the illustration. The long peduncles of the specimen illustrated by Trelease indicate a close relation to Q. chihuahuensis.
关键词：Sierra Madre Occidental;Mexico;epitype;lectotype;introgressive hybridization