期刊
SOUTH AFRICAN JOURNAL OF BOTANY
卷 108, 期 -, 页码 352-358出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.sajb.2016.08.016
关键词
Compositae; Lactuca sativa; Lactuca serriola; Lectotype; Weed; Wild crop relative
资金
- Rijk Zwaan Breeding B.V. Korstiaan Teekens
We review the herbarium material and taxonomic literature pertaining to Lactuca dregeana DC., a poorly understood southern African endemic species that is closely allied to and sometimes treated as conspecific with the European L. serriola L. Published molecular and karyological analyses on the species have all used cultivated accessions of undetermined origin. On the basis of morphology, historical occurrence, and ecology we conclude that L. dregeana represents a distinct genotype and should be maintained as a separate species unless analysis of appropriately documented material indicates otherwise. We lectotypify the name to fix its application and provide a complete description of the species, with illustrations, and a distribution map, as well as an identification key to the native and naturalised Lactuca species in South Africa. The paucity of recent collections of L. dregeana in herbaria suggests that the range of the species has been significantly reduced over the past century. Efforts should be made to determine its current distribution in the wild, especially given its close relationship to cultivated lettuce. (C) 2016 SAAB. Published by Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据