Lithospermum occidentale (Mack.) Weakley
Family: Boraginaceae
marble-seed, western false gromwell
[Onosmodium bejariense var. occidentale (Mack.) B.L.Turner,  more...]
Lithospermum occidentale image
from USDA Plants website  
Etymology: Onosmodium: named for likeness to genus Onosma which means "smell of a donkey"
Plants: perennial forb
Conservation Status: Native