Echinocereus dasyacanthus var. rigidissimus (Engelm.) W.T.Marshall
, Cactaceae (Marshall & Bock) 119 (1941).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:87873-2
- Publication
- Cactaceae, with Illustrated Keys of All Tribes, Sub-Tribes and Genera. Pasadena, CA
- Collation
- 119
- Family as entered in IPNI
- Cactaceae