Equisetum pratense
PNW
AK
BC
ID
MT
OR
WA
YK
248 specimens from 16 herbaria:
Alaska (82)
British Columbia (100)
Idaho (7)
Montana (25)
Oregon (3)
Washington (9)
Yukon Territory (22)
118 images from 12 herbaria:
ALA (72)
CIC (3)
HPSU (3)
ID (5)
IDS (2)
LEA (1)
MONT (4)
MONTU (3)
SRP (4)
UBC (9)
WTU (11)
WWB (1)