The Jamaican endemic Exostema orbiculatum belongs to Erithalis (Rubiaceae)

ALAN R. FRANCK; PATRICK A. LEWIS; ANDREAS OBERLI; ANN HAYNES-SUTTON; PHILIP E . ROSE; KERON C. ST. E. CAMPBELL

doi:10.11646/phytotaxa.297.3.6

Issue: Vol. 297 No. 3: 1 March 2017

Type: Article

Published: 2017-03-01

DOI: 10.11646/phytotaxa.297.3.6

Page range: 273–281

Abstract views: 22

PDF downloaded: 1

**The Jamaican endemic Exostema orbiculatum belongs to Erithalis (Rubiaceae)**

ALAN R. FRANCK⁺⁻
PATRICK A. LEWIS⁺⁻
ANDREAS OBERLI⁺⁻
ANN HAYNES-SUTTON⁺⁻
PHILIP E . ROSE⁺⁻
KERON C. ST. E. CAMPBELL⁺⁻

University of South Florida, 4202 E. Fowler Avenue, ISA 2015, Tampa, FL 33620, USA

Herbarium, University of the West Indies, Mona Campus, Kingston 7, Jamaica

Bermuda Mount, P.O. Box 274, Liguanea, Kingston 6, Jamaica

Marshall’s Pen, P.O. Box 58, Mandeville, Jamaica

Department of Life Sciences, 4 Anguilla Close, University of the West Indies, Mona Campus, Kingston 7, Jamaica

National History Museum of Jamaica, Institute of Jamaica, 10–16 East Street, Kingston, Jamaica

Erithalis Rubiaceae Jamaica Eudicots

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Abstract

Exostema orbiculatum is transferred to the genus Erithalis based on morphology and ITS sequences, resulting in the new combination Erithalis orbiculata. This species, endemic to west-central Jamaica, is unique in Erithalis for its sessile, orbicular leaves, acuminately spinescent stipules, and sessile inflorescence and flowers.