A revision of the genus Choritaenia (Apiaceae)

Mei (Rebecca) Liu; Ben Erik Van Wyk; Patricia M. Tilney

doi:10.1016/j.sajb.2006.10.004

A revision of the genus Choritaenia (Apiaceae)

Mei (Rebecca) Liu, Ben Erik Van Wyk, Patricia M. Tilney

Botany and Plant Biotechnology

University of Johannesburg

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	184-189
Number of pages	6
Journal	South African Journal of Botany
Volume	73
Issue number	2
DOIs	https://doi.org/10.1016/j.sajb.2006.10.004
Publication status	Published - Apr 2007

Keywords

Anatomy
Apiaceae
Choritaenia capensis
South Africa
Taxonomy
Umbelliferae

ASJC Scopus subject areas

Plant Science

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10.1016/j.sajb.2006.10.004

Cite this

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AB - 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.

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KW - Taxonomy

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A revision of the genus Choritaenia (Apiaceae)

Abstract

Keywords

ASJC Scopus subject areas

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