Two new species of Asteraceae from Northern and Western Cape, South Africa and a new synonym

Bothalia - African Biodiversity & Conservation

 
 
Field Value
 
Title Two new species of Asteraceae from Northern and Western Cape, South Africa and a new synonym
 
Creator Manning, J. C. Goldblatt, P.
 
Subject — Asteraceae; Cape Floral Region. Chrysosoma hantamensis J.C.Manning & Goldblatt; new species; Oncosiphon; Senecio speciosissimus J.C. Manning & Goldblatt; South Africa; sp. nov.; systematics
Description We recognize two new species of Asteraceae from the winter rainfall belt of South Africa and reduce a third to synonomy.  Senecio speciosissimus sp. nov. has been confused with  S. coleophyllus Turcz. in the past but is distinguished by its taller stature, larger and more finely serrated leaves, and congested synflorescences containing (6-)l 5-40 flowerheads. The two species are also geographically separated:  S. speciosissimus occurs in the Hottentots Holland and Franschhoek Mountains of the southwestern Cape, whereas S.  coleophyllus is endemic to the Riviersonderend Mountains.  Chrysocoma hantamensis sp. nov. is a distinctive new species endemic to the Bokkeveld and Roggeveld Plateaus. It is distinguished by its resprouting habit. 3-5-fid leaves and large capitula, 12-15 mm in diameter, with lanceolate. 3-veined involucral bracts, the largest 9 - 1 0 x 2 mm. Investigation of the variation in leaf morphology of the two radiate species of Oncosiphon, O. africanum (PJ.Bergius) Kallersjo and  O. glabratum (Thunb.) Kallersjo. reveals that only one species can be maintained, and O. glabratum is accordingly reduced to synonomy in O. africanum.
 
Publisher AOSIS
 
Contributor
Date 2005-08-29
 
Type info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion — —
Format application/pdf
Identifier 10.4102/abc.v35i1.369
 
Source Bothalia; Vol 35, No 1 (2005); 55-61 2311-9284 0006-8241
 
Language eng
 
Relation
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https://journals.abcjournal.aosis.co.za/index.php/abc/article/view/369/312
 
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Rights Copyright (c) 2005 J. C. Manning, P. Goldblatt https://creativecommons.org/licenses/by/4.0
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