The Collaborative International Dictionary
Lady's traces
Lady's traces \La"dy's tra"ces\, Ladies' tresses \La"dies' tress"es\ n. (Bot.) A name given to several species of the orchidaceous genus Spiranthes, in which the white flowers are set in spirals about a slender axis and remotely resemble braided hair.
Wiktionary
lady's traces
n. A plant, ladies' tresses.