Pediocactus nigrispinus
Synonyms: Coryphantha vivipara, Coryphantha vivipara var. vivipara, Echinocactus simpsonii var. robustior, Pediocactus nigrispinus ssp. beastonii, Pediocactus nigrispinus ssp. pueblensis, Pediocactus nigrispinus var. beastonii, Pediocactus simpsonii, Pediocactus simpsonii var. nigrispinus, Pediocactus simpsonii var. robustior
Stems globose or oval with long, needle-sharp spines. Flowers very showy, cup-like, with many petals and stamens. Flowers are solitary and commonly ruby red, but may include yellow to purple. The spines are found in tubercles in eight to thirteen spiral longitudinal rows.
Hedgehog cactus may be found from the plains and foothils in sandy or rocky soils.
Hedgehog cactus may be found from the eastern edge of the Cascade Mts of Washington and Oregon east to Wyoming, Utah, Nevada, and Colorado.
