INSIGHTS INTO THE TAXONOMY OF CITHAREXYLUM L. (VERBENACEAE): A REVISION OF THE SOUTH AMERICAN TAXA

O'LEARY NATALY; FROST, LAURA; MIRRA, FABIANA; MORONI, PABLO

ANNALS OF THE MISSOURI BOTANICAL GARDEN

MISSOURI BOTANICAL GARDEN

Lugar: Saint Louis, Estados Unidos de América; Año: 2021

0026-6493

Citharexylum L. belongs to the recently circumscribed tribe Citharexyleae Briq. of theVerbenaceae, along with Rehdera Moldenke. It comprises around 50?60 species of treesand shrubs growing in the Neotropics. A complete taxonomic revision of Citharexylumin South America is here provided for the first time. Thirty taxa are present in SouthAmerica, 27 of these are endemic, and three of them also grow in Central America.Detailed morphological descriptions are given for each taxon, as well as a key for theiridentification, illustrations, photographs or iconography, updated synonymy, geographicdistribution maps and ecological notes, list of selected specimens, and discussion aboutthe relationship among closely related taxa. A new status, Citharexylum poeppigii var.anomalum (Moldenke) N. O?Leary, and a new combination, C. dentatum var. canescens(Moldenke) N. O?Leary, are proposed. Thirty-five new synonyms are suggested, andlectotypes are designated for: Citharexylum fruticosum fo. brittonii (Moldenke) I.E.Méndez, Citharexylum laurifolium Hayek and Rauvolfia spinosa Cav.