Black-and-yellow-spine Pricklypear

Griffiths, Annual Report Missouri Botanical Garden 21: 172, 1910 Holotype, Isotype, Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Drawing (Britton and Rose, v1 1919, plate XXV, top right) Original Citation What is Opuntia atrispina? Opuntia atrispina is treated here as a distinct black-spined prickly-pear of southwestern Texas (with a larger distribution in Mexico). On this site it is […]