Alnus incana ssp. tenuifolia
PNW
AK
BC
ID
MT
OR
WA
YK
851 specimens from 30 herbaria:
Alaska (107)
British Columbia (74)
Idaho (224)
Montana (158)
Oregon (158)
Washington (124)
Yukon Territory (6)
384 images from 24 herbaria:
ALA (84)
BBLM (2)
BOIS (1)
CIC (18)
CRMO (6)
EWU (4)
HPSU (4)
ID (54)
IDS (35)
MONT (3)
MONTU (66)
NOCA (4)
REED (3)
RM (5)
SOC (14)
SRP (25)
UAAH (8)
UBC (14)
USFS (21)
VALE (2)
WCW (3)
WSTC (1)
WTU (5)
WWB (2)