Tree Pricklypear

Griffiths, Annual Report of the Missouri Botanical Garden 21: 165, 1910  Holotype; Holotype; Isotype; Herbarium; Painting (Annals of the Missouri Botanical Garden 21: 165, 1910, Plate 19) O. cacanapa is another arborescent Opuntia Original citation What is Opuntia alta? Opuntia alta is a large, arborescent pricklypear cactus. Some ancient plants grow 3 to 4 m tall. […]