Carrot

Wild carrot, also called Queen Anne's lace, is a flowering plant of the carrot family, native to temperate Afro-Eurasia. Wikipedia says the cultivated carrot is the domesticated subspecies Daucus carota subsp. sativus. Cunningham calls it masculine, with Mars and fire, and lists fertility and lust. He says the seeds, eaten, help women become pregnant, and carrots are eaten to promote lust and cure impotence. His folk names are Bird's Nest, Philtron, Gizri and Queen Ann's Lace. Wikipedia warns that wild carrot resembles deadly poison hemlock, and describes how to tell them apart. Cunningham is the only source for the magical use.