Revised treatment of Memecylon sect. Afzeliana (Melastomataceae: Olisbeoideae), including three new species from Cameroon

Autor: Jean-Paul Ghogue, R. Douglas Stone, Martin Cheek
Rok vydání: 2008
Předmět:
Zdroj: Kew Bulletin. 63:227-241
ISSN: 1874-933X
0075-5974
Popis: Seven new names at species rank are proposed in Memecylon sect. Afzeliana Jacq.-Fel., a group of forest shrubs and small trees confined to Guineo-Congolian Africa. The group is centred in Cameroon, where 17 of the 20 species occur. A new flower type, the “star-flower” in Memecylon is revealed, and its taxonomic and ecological importance discussed. Three new, locally endemic species from the South West Province of Cameroon are described, mapped and illustrated: M. kupeanum R. D. Stone, Ghogue & Cheek, M. bakossiense R. D. Stone, Ghogue & Cheek, and M. rheophyticum R. D. Stone, Ghogue & Cheek. Two new names, M. accedens R. D. Stone, Ghogue & Cheek and M. hyleastrum R. D. Stone & Ghogue and one new combination, M. mamfeanum (Jacq.-Fel.) R. D. Stone, Ghogue & Cheek are provided at species level for three taxa originally proposed as varieties of M. afzelii G. Don. The taxon M. arcuatomarginatum var. simulans Jacq.-Fel. is also elevated to species status, as M. simulans (Jacq.-Fel.) R. D. Stone & Ghogue. Conservation assessments are provided for all the newly named taxa. A key is provided to the species of Memecylon sect. Afzeliana.
Databáze: OpenAIRE
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