July 31, 2019
Cactus Flowers! First Time Ever!–The greenhouse attendant Glen Marlok gave me a heads-up that the flower bud was there Friday (12 Sep) afternoon and in full bloom Saturday morning.
By Sunday morning, the blossom is already starting to senescence. Some of the rips in the petals could be because of small rodents climbing into the flower (the recumbent stigma suggests rodents or even bats are possible natural pollinators).