Equisetum hyemale ssp. affine
PNW
AK
BC
ID
MT
OR
WA
355 specimens from 27 herbaria:
Alaska (8)
British Columbia (59)
Idaho (50)
Montana (12)
Oregon (85)
Washington (136)
239 images from 24 herbaria:
BABY (1)
BBLM (2)
CIC (3)
CIC-PYNF (1)
COCC (1)
CRMO (2)
EWU (2)
HJAEF (1)
HPSU (2)
ID (22)
IDS (9)
MONT (1)
MONTU (2)
NOCA (2)
OSC (36)
REED (1)
SOC (5)
SRP (7)
UBC (10)
VALE (3)
WCW (2)
WS (1)
WTU (122)
WWB (1)