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Echinocereus rigidissimus

Family: cactaceae
Common name(s): Arizona Rainbow Hedgehog, Sonoran Rainbow Cactus, Cabeza de Viejo
Hardiness ratings: USDA zone 9 - 11

General resources

• Wikipedia. Online encyclopedia entry (if defined).
• Google images. Web search for photographs.
• The Plant List. Taxonomical lookup
• Catalogue of Life. Taxonomical lookup

Links for Echinocereus rigidissimus

• Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 9-11) (13 photos)
• Garden.org - Community-assembled plant profile (5 photos)
• Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation.