Crataegus columbiana var. occidentalis (Britton) Dorn
, Vasc. Pl. Wyoming 299 (1988).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:275257-2
- Species Name
- Crataegus columbiana Howell, Fl. N.W. Amer. [Howell] 1: 163 (1897).
- Publication
- Vascular Plants of Wyoming. Cheyenne
- Collation
- 299
- Family as entered in IPNI
- Rosaceae