Cotton's Stickseed, Spreading Stickseed: Hackelia diffusa var. cottonii -
Difuse Stickseed, Spreading Stickseed: Hackelia diffusa var. diffusa (Synonym: Hackelia saxatilis) -
Blue Stickseed, Meadow Forget-me-not, Jessica Sticktight: Hackelia micrantha (Synonym: Hackelia jessicae) -