Ambrosia acanthicarpa
PNW
ID
MT
OR
WA
231 specimens from 21 herbaria:
Idaho (92)
Montana (6)
Oregon (46)
Washington (87)
138 images from 20 herbaria:
BBLM (1)
BOIS (2)
CIC (13)
COCC (2)
CRMO (3)
HPSU (2)
ID (29)
IDE (13)
IDS (10)
IFBLM (1)
MONT (6)
MONTU (1)
OSC (21)
PSM (2)
SRP (9)
TFBLM (1)
WCW (2)
WS (5)
WTU (12)
WWB (3)