Mammillaria hamata

Mammillaria hamata
Reppenhagen offers no real reason for maintaining this dubious name, and the illustration of his offering as this species (REP 957) , doesn't look significantly different from others in the Series Polyacanthae.
Hunt leaves the name in limbo as a provisionally accepted species, but there is a little chance of ever identifying with certainly what was described so long ago.
Mammillaria - John Pilbeam pag.328


Mammillaria hamata REP 957 - In this plant central spines are straight
REP 957 - San Bernardino, 2200m - Puebla - Mexico
Probably referable to Mammillaria duoformis





Mammillaria hamata REP 957 - In this plant central spines are hooked
REP 957 - San Bernardino, 2200m - Puebla - Mexico
Probably referable to Mammillaria duoformis