Ferocactus emoryi (Engelmann) Orcutt 1926
Echinocactus emoryi var. rectispinus Engelmann 1896
Ferocactus rectispinus (Engelmann) Britton & Rose 1922
Ferocactus emoryi var. rectispinus (Engelmann) N. P. Taylor 1984
Ferocactus emoryi subsp. rectispinus (Engelmann) N. P. Taylor 1998
Ferocactus covillei Britton & Rose 1922
Emory Barrel, Emory’s Barrel Cactus, Coville’s Barrel Cactus, Traveler’s Friend
This cactus is found only in northern Baja California Sur, Mexico.
Identification: Plants are light green to bluish gray, forming a single round or cylindrical stem up to 8' (2.5 m) high and 3' (1 m) in diameter, with 15-30 prominent ribs. A single large central spine, 1½-4" (4-10 cm) long and often curved, is surrounded by 7-9 radial spines up to 2" (6 cm) long. Funnel-shaped flowers span the range from deep red brown to red to yellow. They are up to 3" (7.5 cm) long and 2½" (7 cm) around. Oval-shaped fruits are up to 1¾" (5 cm) long.
Ferocactus emoryi at the Arizona-Sonora Desert Museum Center for Sonoran Desert Studies
Ferocactus emoryi on CactiGuide.com
Ferocactus emoryi at the Arizona Sonora Desert Museum Sonoran Desert Digital Library
Ferocactus emoryi at the Vanderbilt University Bioimages web site
Ferocactus emoryi on eFloras
Ferocactus emoryi description by Thomas H. Kent, last updated 16 Aug 2013.