Melocactus ruestii subsp. maxonii (Rose) Elizondo
, Cact. Suc. Mex. 31: 53 (1986).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:280717-2
- Publication
- Cactaceas y Suculentas Mexicanas. Azcapotzalco, Mexico City
- Collation
- 31: 53
- Family as entered in IPNI
- Cactaceae