Mammillaria milleri var. sheldonii - orchidroots .

Mammillaria milleri var. sheldonii (synonym of Mammillaria grahamii subsp. sheldonii)

Mammillaria milleri var. sheldonii, (Britton & Rose) Neutel. (ITIS)

Mammillaria milleri var. sheldonii is a species in the Mammillaria genus. This name is a synonym of Mammillaria grahamii subsp. sheldonii
No image available. Please try the accepted species grahamii subsp. sheldonii