Triodanis is a genus of flowering plants within the family Campanulaceae, native to North and South America. Venus' looking-glass is a common name for plants in this genus. Species include: \n* Triodanis biflora (Ruiz & Pav.) Greene - small Venus' looking-glass - widespread across North America \n* Triodanis coloradoensis (Buckley) McVaugh - Colorado Venus' looking-glass - endemic to Texas despite the name \n* Triodanis holzingeri McVaugh - Holzinger's Venus' looking-glass - Great Plains plus Arizona and Tennessee \n* Triodanis lamprosperma McVaugh - Prairie Venus' looking-glass - southern Great Plains \n* Triodanis leptocarpa (Nutt.) Nieuwl. - Slimpod Venus' looking-glass - Great Plains \n* Triodanis perfoliata (L.) Nieuwl. - Clasping Venus' looking-glass - widespread across North and South Am