Mountain Stickseed: Lappula montana -
Crowned Tickweed, Cupped Stickseed, Western Stickseed, Tickweed: Lappula redowskii var. cupulata (Synoym: Lappula desertorum, Lappula occidentalis var. cupulata, Lappula redowskii var. desertorum)
Western Stickseed, Western Tickweed: Lappula redowskii var. redowskii (Synonym: Echinospermum redowskii, Lappula occidentalis, Lappula occidentalis var. occidentalis) -
Bristly Sheepburr, Common Stickseed, European Stickseed, Bristly-fruited Stickweed, Bristly-fruited Tickweed: Lapula squarrosa (Synonym: Lappula echinata) -