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Neoporteria curvispina heinrichianus MG1030.79 4/13/21
There are about a dozen described subspecies of N. curvispina. These have all been declared good species by Fred Katterman, who did monumental work on this and related genera. I agree with his declaration re N. curvispina subspecies. I'm not convinced that his super-genus Eriosyce is all that useful. (05/56)