Britton, N. L. & Rose, J. N. 1922. Cactaceae. 3: 128.
Type Status:
Type collection
Place:
Baja California Sur, Mexico, North America
Collection Date:
9 Apr 1911
Notes:
Specimen apparently made from cultivated plant; greenhouse tag with number "34056" included with specimen. See also pressed sheet filed separately, USNH 1821081.