Publication: Cact. Succ. J. (Los Angeles) 12: 156, fig. 1940 Without Latin diagnosis
Description
Central spines 1-2, 8 mm. long, slender, acicular; radial spines 9; tubercles large, 56 mm in diameter.
Origin and Habitat
Guirocoba, Sonora (Mexico, Northern America)
Habitat and ecology: Foothills. Rocky situations in Short-tree Forest.
Bibliography
Major references and further lectures
- Howard Scott Gentry “Rio Mayo Plants: A Study of the Flora and Vegetation of the Valley of the Rio Mayo, Sonora” Carnegie Institution of Washington, page195, 1942