Taxonomic novelties and nomenclatural notes on Coccoloba sect. Coccoloba (Polygonaceae) from Mexico and Central America

Coccoloba is one of the richest tropical tree genera of Polygonaceae. Since the last taxonomic treatment of the genus in 1959, new species and new nomenclatural arrangements have been published in the last decade. In this work, Coccoloba ruizii and Coccoloba queretaroensis are described and illustrated as two new endemic species from Mexico. The names Coccoloba browniana, Coccoloba petenensis and Coccoloba wercklei are resurrected based on morphological characters. In addition, to stabilize the taxonomy in Coccoloba barbadensis, neotypes are proposed for the names Coccoloba barbadensis var. mexicana and Coccoloba leptostachya.