Two new mammillarias from Puebla and Oaxaca, Mexico

Includes two titles: 1) New cacti of Southern Mexico by E. Yale Dawson, and 2) Two new mammillarias from Puebla and Oaxaca, Mexico by Robert E. Craig and E. Yale Dawson

AHFPUB01027AHFPUBOP01AHFPUBOP01027CactusMexico