Dos nuevas especies mexicanas de la familia Rubiaceae

Abstract

Didymaea floribunda is described on the basis of materials collected in Jalisco, Michoacan, Guerrero, State of Mexico, Morelos, Distrito Federal and Veracruz. The species is similar to the Guatemalan D. hispidula L. O. Williams. Richardia gandarae sp. n., so far only known from southwestern San Luis Potosí, seems to be related to R. tricocca ( Torr. & Gray) Standl., from Mexico and southern United States of America.