A new species, Echeveria pistioides (Crassulaceae) is described from south of Morelia in the State of Michoacán, Mexico. The species belongs to Echeveria ser. Gibbiflorae due to its short or acaulescent stems inconspicuous among the large basal leaves of rosettes, paniculiform inflorescence, conical-urceolate corolla, and tricolpate pollen grains. Within Echeveria ser. Gibbiflorae, the closest morphological affinities of E. pistioides are with E. marianae from which it differs in the glaucous leaves with a different shape and size, fewer cincinni, smaller flowers, and the absence of corolla appendages at the base of staminal filaments. The species grows on steep, humid slopes with E, W, or NWexposure and the general type of vegetation consists of oak and pine forest with mesophyllous elements.
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Vol. 41 • No. 4