A new species in the tree genus Polyceratocarpus (Annonaceae) from the Udzungwa Mountains of Tanzania

Andrew R Marshall; T L P Couvreur; Abigail L Summers; N J Deere; W R Q Luke; H J Ndangalasi; S Sparrow; D M Johnson

doi:10.3897/phytokeys.63.6262

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A new species in the tree genus Polyceratocarpus (Annonaceae) from the Udzungwa Mountains of Tanzania

Journal article

Open access

Peer reviewed

A new species in the tree genus Polyceratocarpus (Annonaceae) from the Udzungwa Mountains of Tanzania

Andrew R Marshall, T L P Couvreur, Abigail L Summers, N J Deere, W R Q Luke, H J Ndangalasi, S Sparrow and D M Johnson

PhytoKeys, Vol.63(1), pp.63-76

2016

DOI: https://doi.org/10.3897/phytokeys.63.6262

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Abstract

East Africa

eastern arc

endemism

ndundulu

polyceratocarpus

Polyceratocarpus askhambryan-iringae, an endemic tree species of Annonaceae from the Udzungwa Mountains of Tanzania, is described and illustrated. The new species is identified as a member of the genus Polyceratocarpus by the combination of staminate and bisexual flowers, axillary inflorescences, subequal outer and inner petals, and multi-seeded monocarps with pitted seeds. From P. scheffleri, with which it has previously been confused, it differs in the longer pedicels, smaller and thinner petals, shorter bracts, and by generally smaller, less curved monocarps that have a clear stipe and usually have fewer seeds. Because P. askhambryan-iringae has a restricted extent of occurrence, area of occupancy, and ongoing degradation of its forest habitat, we recommend classification of it as Endangered (EN) on the IUCN Red List. © Andrew R. Marshall et al.

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Title: A new species in the tree genus Polyceratocarpus (Annonaceae) from the Udzungwa Mountains of Tanzania
Authors: Andrew R Marshall (Author) - University of York, United Kingdom
T L P Couvreur (Author) - Institut de Recherche pour le Développement, France
Abigail L Summers (Author) - University of York, United Kingdom
N J Deere (Author) - University of York, United Kingdom
W R Q Luke (Author) - National Museums of Kenya, Kenya
H J Ndangalasi (Author) - University of Dar es Salaam, Tanzania
S Sparrow (Author) - University of York, United Kingdom
D M Johnson (Author) - Ohio Wesleyan University, United States
Publication details: PhytoKeys, Vol.63(1), pp.63-76
Publisher: Pensoft Publishers
Date published: 2016
DOI: 10.3897/phytokeys.63.6262
ISSN: 1314-2011
Copyright note: Copyright © 2016 Andrew R. Marshall et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Organisation Unit: Tropical Forests and People Research Centre; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Forest Research Institute
Language: English
Record Identifier: 99450353302621
Output Type: Journal article

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Web Of Science research areas: Plant Sciences

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