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THREE NEW SPECIES OF CHASSALIA AND PSYCHOTRIA (RUBIACEAE) FROM CENTRAL AFRICA

Published online by Cambridge University Press:  28 May 2010

O. Lachenaud  and
D. J. Harris
O. Lachenaud
Affiliation:
Jardin Botanique National de Belgique, Domaine de Bouchout, 1860 Meise, and Service d’Evolution Biologique et Ecologie – CP 160/12, Université Libre de Bruxelles, 50 Avenue F. Roosevelt, 1050 Bruxelles, Belgium. E-mail: olachena@ulb.ac.be
D. J. Harris
Affiliation:
Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh EH3 5LR, Scotland, UK.
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Abstract

Three new species of Rubiaceae from Central Africa are described and illustrated. Chassalia lutescens O.Lachenaud & D.J.Harris (widespread from Cameroon to Democratic Republic of Congo) is recognised inter alia by the T-shaped ventral furrow of the seeds and the orange-yellow discoloration of inflorescences in herbarium specimens. Psychotria nodiflora O.Lachenaud & D.J.Harris (Central African Republic, Congo-Brazzaville and Democratic Republic of Congo), belonging to Psychotria subgen. Psychotria sect. Involucratae, is unique among African species of the genus in having paired axillary inflorescences. Psychotria pteropus O.Lachenaud & D.J.Harris (Central African Republic and Democratic Republic of Congo) belongs to Psychotria subgen. Tetramerae; it is closely related to P. leptophylla Hiern but differs in its narrow corolla tube and globose to ellipsoid fruits.

Keywords

Central AfricaChassaliaPsychotriaRubiaceaetaxonomy
Type
Articles
Information
Edinburgh Journal of Botany , Volume 67 , Issue 2 , July 2010 , pp. 219 - 233
Copyright
Copyright © Trustees of the Royal Botanic Garden Edinburgh 2010

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References

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