Swertia perennis
PNW
AK
BC
ID
MT
OR
WA
YK
412 specimens from 22 herbaria:
Alaska (152)
British Columbia (20)
Idaho (105)
Montana (106)
Oregon (25)
Washington (2)
Yukon Territory (2)
236 images from 18 herbaria:
ALA (3)
BABY (2)
BOIS (6)
CIC (13)
CIC-PYNF (5)
ID (45)
IDS (9)
LEA (1)
LINF (1)
MONT (27)
MONTU (39)
RM (10)
SRP (10)
UAAH (5)
UBC (1)
WCW (1)
WTU (54)
WWB (4)