Rhytidium rugosum
PNW
AK
BC
MT
OR
WA
YK
521 specimens from 8 herbaria:
Alaska (418)
British Columbia (44)
Montana (1)
Oregon (3)
Washington (3)
Yukon Territory (52)
177 images from 3 herbaria:
ALA (173)
UAAH (3)
WTU (1)