Taxa: Trifolium eriocephalum, Trifolium eriocephalum ssp. eriocephalum (Trifolium eriocephalum var. butleri), Trifolium eriocephalum ssp. arcuatum (Trifolium arcuatum, Trifolium eriocephalum var. piperi), Trifolium eriocephalum ssp. cascadense, Trifolium eriocephalum ssp. cusickii (Trifolium eriocephalum
... (show all)var. cusickii, Trifolium eriocephalum var. harneyense), Trifolium eriocephalum ssp. martinii, Trifolium eriocephalum ssp. villiferum (Trifolium villiferum, Trifolium eriocephalum var. villiferum)