Localidad: (31.310000, -109.140000)
Resumen: Arroyo Guadalupe; canyon & adjacent slopes; bridge to 3 km east, 45 km E of Agua Prieta on MEX 2; Chihuahuan desertscrub on limestone/ quartzite substrates with cottonwood-willow riparian gallery in canyon bottom; 31°18’53”N 109°08’23”W, ~1250m elev.; April 2-4, August 16, 2007.
