Hawthorn1
- Crataegus erythropoda is a hawthorn native to the southern Rocky Mountains in the United States. (wikipedia.org)
Hawthorns2
- The relationships of the American black-fruited hawthorns Crataegus erythropoda, C. rivularis, C. saligna and C. brachyacantha to C. ser. (wikipedia.org)
- 2021. Niche Shifts, Hybridization, Polyploidy and Geographic Parthenogenesis in Western North American Hawthorns (Crataegus subg. (morphobank.org)