Assertion: cascara buckthorn | /r/AtLocation | the rocky mountain region
Facets:
value: east to northern idaho
type: LOCATION
Source sentences:
text: Rhamnus purshianus occurs in the Pacific Coast region from British Columbia (including Vancouver Island) southward in the coastal ranges and in the Sierra Nevada to southern California; it is also found in the Rocky Mountain region, east to northern Idaho, and northwestern Montana.