Revisiting Psyllocarpus goiasensis (Rubiaceae: Spermacoceae): a new synonym, notes on type specimens, and conservation status assessment of this endemic species from the campo rupestre of Goiás state, central Brazil

Abstract

Psyllocarpus goiasensis J. H. Kirkbr. is an endemic species from the campo rupestre of Goiás. Psyllocarpus laricoides Mart. & Zucc. var. γ longicornu K. Schum., formerly under the synonymy of P. laricoides, is treated here as a new synonym of P. goiasensis. A second-step lectotype is designated for this variety. The first illustration and photographs of P. goiasensis, as well as a distribution map and comments on its ecology are presented. This species is assessed as Endangered (EN) under the range size (B) criterion of the IUCN.