Novitates Gabonenses 72. Haplocoelum gabonicum (Sapindaceae), a new species from Gabon and adjacent Congo
Year: 2011
Type: article
Abstract: The genus Haplocoelum ( Sapindaceae ) is restricted to Africa with 13 species described from continental Africa and two from Madagascar. One of these two, H. alatum, published by Radlkofer in 1933 with some doubt, was transferred by Capuron ( 1969 ) to another genus and became Doratoxylon alatum (Radlk.) Capuron. In the same paper Capuron added a new species from Madagascar, H. perrieri Capuron. A recent molecular study of the Sapindaceae (Buerki et al . 2009 ), with two samples of H. foliosum (Hiern) Bullock from the African continent and one of H. perrieri , demonstrated the polyphyly of the genus with H. perrieri belonging to a genus other than the continental african Haplocoelum . The polyphyly shown in an earlier molecular study (Harrington et al . 2005 ) is most likely due to a misidentification of Edwards KE501, because the name H. gallaense (Engl.) Radlk. mentioned for this specimen is a synonym of H. foliosum (Verdcourt 1998 ), the other species investigated. Haplocoelum is mainly confined to East, Central, and South tropical Africa. Verdcourt ( 1998 ) reduced some species to synonymy or to subspecific rank, resulting in the recognition of two species in the Flora of Tropical East Africa . Hauman ( 1960 ) recognised five species for the Flore du Congo Belge of which two were described as new (Hauman 1958 ). Fouilloy & Hallé ( 1973 ) stated that the genus was not present in Gabon, and in Cameroon with one species H. gallaense (Engl.) Radlk. only. Nevertheless they produced a key to this and two other species, H. dekindtianum (Engl.) Radlk and H. acuminatum Radlk. ex Engl., both originally described from Angola, the former being reduced to a synonym of H. foliosum (Hiern) Bullock by Exell & Mendonça ( 1954 ). H. gallaense was also treated as a synonym of H. foliosum by Verdcourt ( 1998 ).
Source: Kew Bulletin
Author: F. J. Breteler
Institution: Wageningen University & Research
Language: English
Domain: Life Sciences
Open Access status: hybrid
Estimated APC paid: $3,190
OpenAlex ID: W1982533923