Equisetum ×nelsonii
PNW
BC
ID
MT
OR
WA
13 specimens from 9 herbaria:
British Columbia (4)
Idaho (1)
Montana (3)
Oregon (1)
Washington (4)
5 images from 5 herbaria:
ID (1)
MONTU (1)
SRP (1)
UBC (1)
WTU (1)