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Pentagonia lanciloba, a new species of Rubiaceae (Hippotideae) from northwestern Ecuador

Abstract:

Pentagonia lanciloba, a new species of Rubiaceae (Hippotideae) from the wet forests of northwestern Ecuador, is described. This new species is characterized by pinnatifid leaf blades with tapered and long-decurrent subsessile bases, floral bracts with long-acuminate to caudate apices, calyces with narrowly-lanceolate and remarkably long lobes (15-28 mm), and tomentose, orange to red corollas. The new species is illustrated, and its relationship to morphologically similar species is discussed. © 2009 The New York Botanical Garden.