Oreocereus fossulatus var. gracilior (K.Schum.) Backeb.
, Cactaceae (Backeberg) 2: 1032 (1959).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:175973-2
- Publication
- Die Cactaceae: Handbuch der Kakteenkunde
- Collation
- 2: 1032
- Family as entered in IPNI
- Cactaceae