Gray stickseed (Hackelia cinerea)
Same genus
- Amethyst stickseed (Hackelia amethystina)
- Greater showy stickseed (Hackelia bella)
- Bessey's stickseed (Hackelia besseyi)
- Poison Canyon stickseed (Hackelia brevicula)
- California stickseed (Hackelia californica)
- Okanogan stickseed (Hackelia ciliata)
- Cronquist's stickseed (Hackelia cronquistii)
- Cusick's stickseed (Hackelia cusickii)