Geranium vulcanicola Small ex Underw. & Britton

Geranium vulcanicola Small, sp. nov
Perennial, the caudex usually branched. Stems spreading or decumbent, 2- dm. long, finelv pubescent with rather lax or somewhat appressed retrorse hairs ; leaf-blades pentagonal-reniform in outline, 2-4 cm. wide, 3-5-parted, the divisions incised and toothed, sparingly hirsute or somewhat appressed-pubescent on both sides ; petioles more copiously pubescent than the stem ; pedicels pubescent with spreading glandular hairs ; sepals minutely awn-tipped, the outer ones 5.5-6.5 mm. long, the bodies oblong-ovate, pubescent with spreading glandular hairs ; petals white, veinless, slightly longer than the sepals ; style-column 11-12 mm. long, abruptly short-beaked, pubescent with spreading glandular hairs; carpel-bodies about 3 mm. long, nearly glabrous ; seeds nearly 2 mm. long, smooth.
Type collected on Ixtaccihuatl, Mexico, October, 1905, C. A. Pit rp us 1691. Distribution : Middle Mexico.