Flora of Cameroon – Annonaceae Vol 45

By

Couvreur, Thomas L.P.
Dagallier, Leo-Paul
Crozier, Francoise
Ghogue, Jean-Paul
Hoekstra, Paul
Kamdem, Narcisse
Johnson, David M.
Murray, Nancy
Sonké, Bonaventure

Type

Article

Date of Publication

2022

Original Publication

PhytoKeys

Volume

207

Pages

1--532

Subjects

Africa , botanical identification , Conservation , diversity , lectotypification , new species , taxonomy , vascular plants

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers [2010]-

Identifiers

DOI: https://doi.org/10.3897/phytokeys.207.61432

 

Abstract

Annonaceae is a major pantropical family with 113 genera and about 2550 species. Cameroon is one of the most biodiverse countries in Africa but its flora remains incompletely known. In this volume of the Flora of Cameroon, we describe 166 native taxa representing 163 species in 28 native genera within the family Annonaceae. A total of 22 species (about 13%) are endemic to the country. We provide keys to all native genera, species, and infraspecific taxa. For each species a detailed morphological description and a map of its distribution in Cameroon are provided. Distribution maps and diversity analyses are based on a taxonomically verified database of 2073 collections. Across Africa, Cameroon is a center of diversity for Annonaceae harboring one of the highest numbers of species and genera. For example, Cameroon harbors the highest number of African species for the only pantropical genus of Annonaceae, Xylopia. Annonaceae are found across all 10 administrative regions of Cameroon but diversity is concentrated within the tropical rain forest areas situated in the south and South-West. The areas around Bipindi and Mount Cameroon show the highest levels of diversity, but this is correlated with collection effort. Line drawings and/or photographs accompany most species. One species new to science Uvariopsis etugeanaDagallier & Couvreursp. nov.is described. We also undertake a number of nomenclatural changes such as lectotypifications, six new synonymies and two new combinations (Uvaria anisotricha(Le Thomas) Couvreur,comb. nov.; Uvariodendron fuscum var. giganteum (Engl.) Dagallier & Couvreur,comb. nov.).