The subspecies 'spinosissima' only rarely grows higher than 12 inches. It has dirty white spines and does not have the bristles in the ax...Read Moreils most of the time.
The subspecies 'tepoxlana' has yellow spines.
The subspecies 'pilcayensis' has whiter spines and the stems can grow to 20 inches long/high. It might have some latex/bristles in the axils.
The flowers are purple-pink on all subspecies.
The subspecies 'spinosissima' only rarely grows higher than 12 inches. It has dirty white spines and does not have the bristles in the ax...Read More