Janet, last twelve hours this monstrose has been following me I agree its not a monstrose.
Two spines. I agree that mine are showing two spines but let me check up in the morning. Lower down it does not have just two but a cluster. Let me check and i will post the photographs but these sites are not in vain, I have two other Opuntias which have to be ID'd and all this will help.
Tee, you are 100% correct what ever has been placed so far says that.
Janet, your evening is young while mine is way past midnight so you give them company.
Good night ALL of you
Regards,
Masud.