A question from the Cactus Jungle facebook page:
Thank you guys for finding a beautiful Opuntia santa-rita for me in the back on Monday afternoon. I’ve been giving it warm shelter in my car at the moment on the passenger side floor. Between the santa-rita and the violacia, which one has a more purple hue to them when stressed?
They’re very closely related; some consider the O. santa-rita to be a subspecies of O. violacea. And there are a number of different O. violaceas; different subspecies and different population groups. The purple colors vary and the intensity of the color can vary too, but to just get down and answer your question, the O. santa-rita will get more purple color.
Here’s some photos:
Opuntia santa-rita (O. violacea ssp. santa-rita)
Opuntia macrocentra (O. violacea ssp. macrocentra)