Pediocactus simpsonii (Engelm.) Britton & Rose
, Ill. Fl. N. U.S. (Britton & Brown), ed. 2. ed. 2, 2: 570, fig. 2983 (1913).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:186549-2
- Publication
- An Illustrated Flora of the Northern United States
- Collation
- ed. 2, 2: 570, fig. 2983
- Date of Publication
- 7 Jun 1913
- Family as entered in IPNI
- Cactaceae