Botanical names: Echinocereus rigidissimus, Cereus pectinatus var. rigidissimus, Echinocereus pectinatus var. rigidissimus
Common names: Arizona Rainbow Hedgehog Cactus, Cabeza de Viejo
Family: Cactaceae
Origin: Southeastern Arizona, Mexico
USDA Plant Hardiness Zone Map
Intense pink flowers with much lighter throat, 2.4 to 2.8 inches long (6-7 cm), up to 3.6 inches in diameter (9 cm).
Similar plants: Echinocereus rigidissimus (Arizona Rainbow Hedgehog Cactus)
Link to this plant:
https://toptropicals.com/catalog/uid/echinocereus_rigidissimus.htm