A new species and a nomenclatural change in Graptopetalum (Crassulaceae)

Graptopetalum glassii from Colima, Mexico, is described and illustrated. It is closely related to G. pentaudrum, differing in being smaller and in having a herbaceous habit and a larger number of oblanceolate pale green leaves. Graptopetalum pentandrum subsp. superbum is raised to species rank. Characters that support the, change of status are a larger size of the plants, a squamose surface of the stem, a pink-violet color of the rosette, oblong-obovate leaves, and a profusely branched inflorescence. RESUMEN. Graptopetalum glassii de Colima, Mexico, es descrita a ilustrada. Esta cercanamente relacionada con G. peutandrum; sin embargo, difiere en poseer un menor tama (n) over tildeo, un habito herbaceo con un mayor numero de hojas oblanceoladas de color verde mas palido. Graptopetalum pentandrum subsp. superbum es elevada a nivel de especie. Caracteres que apoyan el cambio de estatus son un tama (n) over tildeo mas grande, una superficie del tallo escamosa, un color rosa-violeta de la roseta, hojas oblongo-obovadas y un mayor numero de ramas en la inflorescencia.