Bluish Pricklypear

Griffiths, Proceedings of the Biological Society of Washington 29(3): 13–14, 1916 Isotype; Herbarium; Herbarium; Herbarium. Original Description What is Opuntia caesia? Opuntia caesia is a large, blue-green, strongly glaucous prickly-pear, typically bigger and woodier in aspect than O. phaeacantha. Colonies often span 2–3 m across and stand about 50–80 cm tall, with long, spreading basal axes and […]