Isoetes howellii
PNW
BC
ID
MT
OR
WA
134 specimens from 15 herbaria:
British Columbia (23)
Idaho (12)
Montana (7)
Oregon (53)
Washington (39)
120 images from 13 herbaria:
CIC (1)
EWU (1)
HPSU (7)
ID (2)
IDS (1)
MONT (1)
MONTU (4)
OSC (20)
SOC (3)
SRP (1)
UBC (15)
WS (37)
WTU (27)