Glyceria maxima
PNW
AK
BC
MT
WA
YK
40 specimens from 6 herbaria:
Alaska (5)
British Columbia (28)
Montana (1)
Washington (4)
Yukon Territory (2)
15 images from 4 herbaria:
ALA (5)
MONTU (1)
UBC (6)
WTU (3)