Diluvim Ladies'-tresses: Spiranthes diluvialis (Synonym: Spiranthes romanzoffiana var. diluvialis)
Creamy Ladies'-tresses, Creamy Lady's Tress, Western Ladies'-tresses, Western Ladies' Tresses: Spiranthes porrifolia (Synonym: Spiranthes romanzoffiana var. porrifolia)
Hooded Ladie's Tresses: Spiranthes romanzoffiana (Synonym: Spiranthes romanzoffiana var. romanzoffiana)