Equisetum scirpoides
PNW
AK
BC
MT
OR
WA
331 specimens from 18 herbaria:
Alaska (24)
British Columbia (210)
Montana (40)
Oregon (1)
Washington (43)
121 images from 16 herbaria:
BOIS (1)
HPSU (1)
ID (8)
LEA (1)
MONT (6)
MONTU (22)
NOCA (4)
OSC (3)
PLU (2)
PSM (3)
SRP (1)
UAAH (8)
UBC (16)
WS (1)
WTU (41)
WWB (3)