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11 March 2024 Rubiacearum Americanarum Magna Hama Pars Li: New Species and Nomenclatural Clarifications in Palicourea (Rubiaceae: Palicoureeae) in Honor of Dr. Robert L. Wilbur
Charlotte M. Taylor
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Abstract

Nomenclatural and taxonomic analyses clarify the identities, correct names, and typifications for four previously-described species of Palicourea. A nomenclatural study shows that P. carruthersii is the overlooked oldest name for plants from Central and South America currently called P. microbotrys, and a taxonomic study finds that P. furcata is the oldest name for plants from Central and South America currently called P. longiinvolucrata. The name Psychotria japurensis was inadvertently published twice in the same work, for two different species; this situation has a previously overlooked published resolution, as clarified here: one of Müller's species is correctly called Palicourea iodotricha and the other is P. japurensis. Four new species of Palicourea have been discovered through recent botanical exploration and are described here. Palicourea geminata, from Amazonian Ecuador, is distinctive in its subcapitate inflorescences borne on paired axillary short shoots, well-developed bracts, and white corollas. Palicourea monsalveae, from coastal western Colombia, is distinctive in its glabrous leaves and stems, robust stipules and leaves, and robust and subcapitate inflorescences. Palicourea wilburiana, from the Andes of Ecuador, is distinctive in its sericeous pubescence, relatively large stipules, and subcapitate inflorescences with well-developed bracts. Palicourea woytkowskii, from the Andes of northern Peru, is distinctive in its densely pilosulous leaves and stems and subcapitate inflorescences with well-developed, bright pink bracts.

Charlotte M. Taylor "Rubiacearum Americanarum Magna Hama Pars Li: New Species and Nomenclatural Clarifications in Palicourea (Rubiaceae: Palicoureeae) in Honor of Dr. Robert L. Wilbur," Rhodora 124(998-9), 254-278, (11 March 2024). https://doi.org/10.3119/21-24
Published: 11 March 2024
KEYWORDS
Central America
nomenclature
Plant taxonomy
Psychotria
South America
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