Crataegus macracantha
Family: Rosaceae
hawthorn, large-thorn hawthorn
[Crataegus columbiana var. occidentalis Howell,  more...]
Crataegus macracantha image
from USDA Plants website  
Etymology: Crataegus: Greek cratos for "strength" because of the hardness of the wood
Plants: perennial shrub
Conservation Status: Native