The differences between the subspecies are:
-ssp. melanocentra: Has 7-9 black or gray radial spines and brilliant deep pink blooms...Read More.
-ssp. linaresensis: Has 4-6 white radial spines and white/near white blooms.
-ssp. rubrograndis: Has 11-13 yellow-brown radial spines and brilliant carmine blooms.
They all have One stout, black central spine.
The differences between the subspecies are:
-ssp. melanocentra: Has 7-9 black or gray radial spines and brilliant deep pink blooms...Read More