Plains Prickly Pear
Opuntia polyacantha
The “plains prickly pear” has approximately seven subspecies. These subspecies often form hybrids between one another and at least two are found in southeastern Utah so I will not attempt to differentiate which subspecies this is here. (If you’re interested in more information about Opuntia polyacantha subspecies, this is a great resource.) http://opuntiads.com/O/opuntia-n-z/opuntia-p-r/opuntia-polyacantha/