A revision of the genus Choritaenia (Apiaceae)

被引：7
|
作者：
Liu, Mei [1 ]
Van Wyk, Ben-Erik [1 ]
Tilney, Patricia M. [1 ]
机构：
[1] Univ Johannesburg, Dept Bot & Plant Biotechnol, ZA-2006 Auckland Pk, South Africa
来源：
SOUTH AFRICAN JOURNAL OF BOTANY | 2007年 / 73卷 / 02期
基金：
新加坡国家研究基金会;
关键词：
anatomy; Apiaceae; Choritaenia capensis; taxonomy; South Africa; Umbelliferae;
D O I：
10.1016/j.sajb.2006.10.004
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
The poorly known monotypic genus Choritaenia (Apiaceae) is revised. Choritaenia capensis is a small annual herb endemic to the central parts of South Africa and has several peculiar morphological and carpological features not found in other genera of Apiaceae. The dorsally compressed, hairy fruits have "inter-rib" wings, and a woody endocarp with globose oil vesicles (rather than vittae or rib oil ducts) at regular intervals in the wings. The very short carpophore is hygroscopic and appears to be an adaptation for dispersal of the mericarps after rain. The phylogenetic position of Choritaenia within the family Apiaceae remains unclear, but it is presumed to be related to the subfamily Azorelloideae, the only group where some members have dorsally compressed fruits with woody endocarps. (c) 2006 SAAB. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：184 / 189
页数：6
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