Mexico, Veracruz, La Perla Mun., N side of Pico de Orizaba, above the Piedra Grande mountaneering shelter.
19.05 -97.27
4400 meters
14436 ft
very steep slopes of bare rock and talus slopes, each species collected when first encountered while descending from base of Glacier de Jamapa (4600 m.) to the Piedra Grande shelter (4100 m.)