Ochnaceae subtribe Ochninae: circumscribing and naming monophyletic genera
Year: 2025
Type: article
Abstract: Bissiengou, P., I. Darbyshire, O. Maurin, A. Merrall & I.M. Turner (2025). Ochnaceae subtribe Ochninae: circumscribing and naming monophyletic genera. Candollea 80: 141–170. In English, English abstract. Morphological and molecular analyses using target sequencing were employed to investigate the generic classification of Ochnaceae subtribe Ochninae. The universal Angiosperms353 and Ochnaceae-specific probe kits were used to recover low copy nuclear genes on a sampling of 65 samples including 59 Ochninae and 6 outgroups to reconstruct a multi-species coalescent phylogenetic tree. We confirmed that the genus Campylospermum Tiegh. as currently recognised includes two clades that are not closely related, despite remarkable similarity in flower and fruit form. The two clades can however be separated on a combination of characters including embryo morphology, stipule form and leaf venation. By appropriate lectotypification, Campylospermum s.s. becomes a genus of 41 species confined to Continental Africa that is sister to the genus Rhabdophyllum Tiegh. The Asian, Malagasy and remaining African species are transferred to the genus Philomeda Noronha ex Thouars from Madagascar with no validly published species names. Philomeda is sister to Brackenridgea A. Gray. Here, 11 new combinations in Philomeda are made. Certainly, more will be needed for Madagascar and Asia, but further taxonomic research is required before they can be published. One new combination in Campylospermum is included to resolve a nomenclatural problem, and several new lectotypes are designated. An identification key to the genera of Ochninae is presented. Submitted on April 14, 2025 – Accepted on August 13, 2025 – First published online on September 24, 2025
Source: Candollea
DOI: 10.15553/c2025v802a2
Domain: Life Sciences
Open Access status: hybrid
OpenAlex ID: W7082661349
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