Pediocactus simpsonii (Engelmann) Britton & Rose fa.muehlii Hochstätter
Succulenta, Netherlands, 76 (6): 262-270, 1997.Muehl´s Cactus
Holotype: Dixie National Forest, S Utah, fieldmumber fh 63.1.2, May
Other representative material studied.
| Utah: | fh 63.1.2 (type), Enterprise, 1,900m, fh 63.1.4, Park Canyon, 1,820m. |
Pediocactus simpsonii fa.muehlii, fh 63.1.2 (type), Enterprise, 1,900m