Mammillaria maycobensis
Some botanists don't accept M.maycobensis as a valid species, lumping it into M.standleyi
Mexico trip - part 8 - Chris Davies
Mammillaria maycobensis ROG 222
ROG 222 - Sinaloa/Chihuahua border - Mexico
from "Ento" Ennio Toso collection - Savona
Referred to Mammillaria standleyi
Mammillaria maycobensis ROG 222
ROG 222 - Sinaloa/Chihuahua border - Mexico
Referred to Mammillaria standleyi