Triodanis

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:
 * Triodanis biflora (Ruiz & Pav.) Greene - small Venus' looking-glass - widespread across North America
 * Triodanis coloradoensis (Buckley) McVaugh - Colorado Venus' looking-glass - endemic to Texas despite the name
 * Triodanis holzingeri McVaugh - Holzinger's Venus' looking-glass - Great Plains plus Arizona and Tennessee
 * Triodanis lamprosperma McVaugh - Prairie Venus' looking-glass - southern Great Plains
 * Triodanis leptocarpa (Nutt.) Nieuwl. - Slimpod Venus' looking-glass - Great Plains
 * Triodanis perfoliata (L.) Nieuwl. - Clasping Venus' looking-glass - widespread across North and South America from Canada to Argentina; naturalized in China, Korea, Australia
 * Triodanis texana McVaugh - Texas Venus' looking-glass - endemic to Texas