mammillaria magallanii "var hamatispina"

i can't find news about "var hamatispina"?
this little plant is in flower today










this is another one in flower on 2008, april/maj

M. magallanii var. hamatispina was described by Backeberg in 1962, as a hooked spine variant of M. magallanii (a formally invalid description because no type was deposited). In my opinion, M. magallanii, does sometimes form a hooked central spine, especially on young plants. But this also depends on the locality, because M. magallanii from certain locations does not produce a hooked central, whereas M. magallanii from other locations does produce a hooked central.

Wolter.

incredibile.....
sei un mago.....
grazie!!!!!