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Ferocactus robustus (Pfeiffer) Britton & Rose 1922 Echinocereus robustus Pfeiffer 1837 Clustering barrel cactus
Ferocactus robustus means “big robust ferocious cactus”—a reference to the sprawling colonies produced by this species. It is native to Peubla, Mexico. Identification: Most members of Ferocactus are usually solitary plants, but this one has a profusion of stems, forming masses 3' (1 m) high and up to 16' (5 m) around. Stems are round or elongated ovals 3-6" (8-16 cm) in diameter, with 8 ribs, and spine groups that are further apart than with most of this genus. 4-7 large central spines include a single, hooked, largest spine up to 2" (6 cm) long, and several shorter, straight spines. Central spines are tinged with tan, red, or purple. Underneath are 10-14 smaller, whiter radial spines. Funnel-shaped yellow or yellow-orange flowers are 1-1½" (3-4 cm) in size. Yellow, ball- or oval-shaped fruits are ¾-1" (2-3 cm) in size.
Lon Brehmer and a group of Ferocactus robustus; San Luis Temalacayuca, Puebla, Mexico. Copyright © 2006 Enriqueta Flores-Guevara & Lon Brehmer. References:
Anderson, Edward F., The Cactus Family, Timber Press, 2001, p. 334 Online References:
Ferocactus robustus on CactiGuide.com Ferocactus robustus on Cactus Art: the World of Cacti & Succulents Ferocactus robustus on PlantSystematics.org Ferocactus robustus on BioLib.cz Ferocactus robustus on Flickr Ferocactus robustus description by Thomas H. Kent, last updated 25 May 2020.
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2/24/2010 · San Diego (Quail) Botanic Garden, Encinitas, California Range: Zones 9b-11:
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