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Issue: Vol. 675 No. 2: 3 Dec. 2024
Type: Article
Published: 2024-12-03
DOI: 10.11646/phytotaxa.675.2.6
Page range: 158-166
Abstract views: 203
PDF downloaded: 9

Alibertia mahechae (Gardenieae, Rubiaceae), a new species from the Eastern Colombian Andes

Herbario Forestal (UDBC), Universidad Distrital Francisco José de Caldas, Carrera 5 Este No. 15-82, Bogotá, Colombia
Herbario Forestal (UDBC), Universidad Distrital Francisco José de Caldas, Carrera 5 Este No. 15-82, Bogotá, Colombia
Department of Biological and Environmental Sciences, University of Gothenburg, P. O. Box 463, SE-405 30 Göteborg, Sweden
AMAP Lab, IRD, CNRS, CIRAD, INRA, Université de Montpellier, 34398 Montpellier, France. AMAP Lab, IRD, Herbier de Guyane, B.P. 90165 97323 Cayenne, French Guiana, France.
Borojo dioecious species Quercus humboldtii Eudicots

Abstract

Alibertia mahechae (Gardenieae, Rubiaceae), a new tree species endemic to the forest of the Colombian Eastern Andes, is described and illustrated. The new species is distinguished by traits such as coriaceous, glabrous leaves, short stipules, pistillate flowers with 7–8-lobed corollas, and globose fruits with woody mesocarp. This new species is similar to A. occidentalis, from which it differs in the coriaceous leaf blades (vs. papyraceous in A. occidentalis), (5–)7–9 pairs of secondary veins [vs. 9–14(–16)], male flower with truncate calyx (vs. denticulate to slightly undulate), corolla tubes (15–)20–27 mm long (vs. 11–18 mm long), anthers 16–17.5 mm long (vs. 6.5–10 mm long), and female flower 7–8-merous (vs. 6-merous). A key to the Alibertia species occurring in Colombia is provided.

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