Isoetes howellii
PNW
BC
ID
MT
OR
WA
126 specimens from 16 herbaria:
British Columbia (14)
Idaho (13)
Montana (7)
Oregon (52)
Washington (40)
53 images from 12 herbaria:
CIC (1)
EWU (1)
HPSU (5)
ID (2)
IDS (1)
MONT (1)
MONTU (4)
RM (1)
SOC (3)
SRP (1)
UBC (6)
WTU (27)