Prunus pumila var. besseyi (L.H.Bailey) Gleason
Family: Rosaceae
Bessey's cherry, Bessey's sand cherry, sand cherry, western sand cherry
Prunus pumila var. besseyi image
from USDA Plants website  
Etymology: Prunus: ancient Latin name for the plum
Plants: perennial shrub
Conservation Status: Native
- low or midsized shrubs (< 1.7 m)

- branches lacking spines

- flowers white, in sessile umbels of 1-3 flowers

- petals 3-6 mm long

- twigs glabrous

- leaf tips usually acute

- fruit 8-12 mm, purplish-black to black