ESTUDIOS SOBRE LAS RUBIACEAS DE MEXICO, LI Una especie nueva del genero Mitracarpus (Spermacoceae, Rubiaceae) en Oaxaca y Tabasco

摘要

The new species of Mitracarpus of Oaxaca y Tabasco is prominent of its extremely small flowers almost completely hidden among the longer calyx lobes. It differs from Mitracarpus brevi-florus A. Gray, the other small-flowered species of the genus, by being a perennial herb with 4-angular hairy stems lignescent at the base and the larger, elliptical, 5-7-nerved leaves.