Piptanthocereus obtusus (Haw.) F.Ritter
, Kakteen Südamerika 1: 231 (1979), without basionym ref. (1979).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:907986-1
- Publication
- Kakteen in Sudamerika: Ergebnisse Meiner 20-jährigen Feldforschung
- Collation
- 1: 231 (1979), without basionym ref.
- Date of Publication
- 1979
- Family as entered in IPNI
- Cactaceae