T.R. Van Devender, A.L. Reina-G., G. Ferguson, S. Hale, F. Reichenbacher, C. Smith
Mexico, Sonora, Fronteras, Sierra Buenos Aires, upper Arroyo Mababi (local name El Aguaje de la Capilla); 2.3 km SSW (by air) of Rancho El Capulin; 51 km ESE (by air) of Cananea.
30.75165 -109.82967 WGS84
1537 meters
5042 ft
Sandy flat downstream of perennial spring site in oak woodland.