English: Redspine fishhook cactus; Redspine butterfly cactus; Needle-spine pineapple cactus; Red pineapple cactus; Purple-spine viznagita.
Spanish: Acuña cactus.
Region: Arizona, New Mexico, Sonora in Mexico.
Botany: on limestone, ± 30 cm high, 10 cm wide; spines many, up to 4 cm long, purple, pink, white with brown tips; flower up to 6 cm long, 9 cm wide, white, pink, lavender tepals, with greenish, brown, or reddish coloration at the bases, flowering in early March.