Asclepias verticillata
PNW
MT
24 specimens from 4 herbaria:
Montana (24)
Big Horn (1)
Custer (3)
Dawson (2)
Garfield (2)
McCone (1)
Phillips (2)
Powder River (1)
Prairie (1)
Richland (1)
Roosevelt (2)
Rosebud (2)
Sheridan (3)
Valley (1)
Wibaux (1)
Yellowstone (1)
21 images from 3 herbaria:
IDS (1)
MONT (10)
MONTU (10)