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Echinofossulocactus phyllacanthus 'grandicornus' SB437 Huizache MG299.14 12/22/19
Same plant as previous picture. It's hard to see, bit I think that the difference between most "phyllacanthus" and "erectocentrus" is in the lean of the central spines. That is, these spines in "phyllacanthus" (means leaf-like spines) tend to curl to the tip of the plant (10/24)