Calliergon giganteum
PNW
AK
BC
ID
MT
OR
WA
YK
364 specimens from 11 herbaria:
Alaska (214)
British Columbia (56)
Idaho (5)
Montana (38)
Oregon (8)
Washington (24)
Yukon Territory (19)
42 images from 3 herbaria:
ALA (3)
UAAH (36)
WTU (3)