Echinocactus platyacanthus Link & Otto 1827
Echinocactus karwinskii Zuccarini 1837
Echinocactus ingens Zuccarini ex Pfeiffer 1837
Echinocactus heliophorus Lemaire 1839
Echinocactus visnaga W. J. Hooker 1851
Echinocactus grandis Rose 1906
Echinocactus palmeri Rose 1909
Biznaga de Dulce, Biznaga Gigante, Giant Barrel Cactus, Giant Biznaga, Large Barrel Cactus
Biznaga de dulce (roughly “sweet thorny cactus”) is native to northern and central Mexico.
Identification: These cacti are generally spherical in shape, though they may appear more columnar or barrel-shaped. They reach 20-98" (50-250 cm) in height, and 16-31" (40-80 cm) in diameter. The number of ribs varies from as few as 5 to 60, with spine groups of 8-10, each 1-1½" (3-4 cm) long. Spines are yellowish or reddish, darkening as they age. Multiple yellow flowers appear on the top of each cactus, each 1¾-2½" (5-7 cm) in diameter. Dry, oval-shaped fruits are 1¾-2½" (5-7 cm) long. The primary identifying feature is the large size.
Echinocactus platyacanthus on Desert-tropicals.com
Echinocactus platyacanthus on Cactus Art: the World of Cacti & Succulents
Echinocactus platyacanthus on CactiGuide.com
Echinocactus platyacanthus description by Thomas H. Kent, last updated 25 May 2020.
Range: Zones 9b-11: