title: A nonet of novel species ofMonanthotaxis(Annonaceae) from around Africa.
abstract: As part of an ongoing revision of the genusMonanthotaxisBaill. (Annonaceae), nine new species are described and one variety is reinstated to species rank. Two new species from West Africa (Monanthotaxis aquilaP.H.Hoekstra,sp. nov.andMonanthotaxis atewensisP.H.Hoekstra,sp. nov.), four new species from Central Africa (Monanthotaxis couvreuriiP.H.Hoekstra,sp. nov.,Monanthotaxis latistaminaP.H.Hoekstra,sp. nov.,Monanthotaxis tripetalaP.H.Hoekstra,sp. nov.andMonanthotaxis zenkeriP.H.Hoekstra,sp. nov.), one new species from Tanzania (Monanthotaxis filipesP.H.Hoekstra,sp. nov.), one new species from the area around Maputo (Monanthotaxis maputensisP.H.Hoekstra,sp. nov.), one new species from the Comoro Islands (Monanthotaxis komorensisP.H.Hoekstra,sp. nov.) and Monanthotaxis klainei (Engl.) Verdc. var. angustifolia (Boutique) Verdc. is raised to species level leading to the replacement nameMonanthotaxis atopostemaP.H.Hoekstra,nom. nov.(notMonanthotaxis angustifolia(Exell) Verdc.). Complete descriptions, comparisons with related species, ecological information and IUCN conservation assessments are given for the new species. Five species were classified as critical endangered, two species as endangered, one as vulnerable and one as least concern, warranting the need of further collecting and studying those species.
authors.affiliation: Naturalis Biodiversity Center (Section NHN), Herbarium Vadense, Darwinweg 2, 2333 CR Leiden, The Netherlands; Biosystematics group, Wageningen University and Research centre, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands.
authors.forename: Paul H
authors.initials: PH
authors.lastname: Hoekstra
authors.affiliation: Naturalis Biodiversity Center (Section NHN), Herbarium Vadense, Darwinweg 2, 2333 CR Leiden, The Netherlands; Biosystematics group, Wageningen University and Research centre, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands.
authors.forename: Jan J
authors.initials: JJ
authors.lastname: Wieringa
authors.affiliation: Biosystematics group, Wageningen University and Research centre, Droevendaalsesteeg 1, 6708 PB Wageningen, The Netherlands.
authors.forename: Lars W
authors.initials: LW
authors.lastname: Chatrou
keywords: Africa; Annonaceae; Atewa Range; Cameroon; Comoros; Gabon; Ghana; Gilbertiella; Ivory Coast; Mayotte; Monanthotaxis; Mozambique; Ottotomo; Republic of Congo; Rondo; South Africa; Tanzania; new species