Thelocactus setispinus

Click on the images below to see larger versions.

Scientific Name Thelocactus setispinus (Hamatocactus setispinus, Echinocactus setispinus) USDA PLANTS Symbol
Common Name Miniature Barrel Cactus ITIS Taxonomic Serial No.
Family Cactaceae (Cactus) Wildflower Center Ref.
Click Here
Description Habitat: Dry areas on hills and flats in grasslands and thickets.
Plant: Low-growing, solitary cactus 4 to 8 inches tall and 4 inches wide; green ovoid or cylindrical stems with 12-15 oblique or twisted ribs 1/2 to almost 3/4-inch tall.
Spines: Central spines (1 to 3), one is strongly-hooked, all smooth, 1/2 to 1-1/2 inches long, straw colored or reddish-brown with lighter tips; nearly straight radial spines up to 1-1/2 inches long, straw color or white or brown, 9 to 17 per areole.
Inflorescence: Yellow flowers 1-1/2 to 2-1/4 inches across at the top of the stems, petals red at the center, numerous yellow stamens surround yellow center pistil.
Bloom Period: Summer to fall.
References: LLIFLE encyclopedia and Ferocactus setispinus in "Manual of the Vascular Plants of Texas" by Correll and Johnston.
Texas Status

Click here for Thelocactus bicolor.

© Tom Lebsack 2019