Campanulaceae

Clasping Venus' looking-glass

Triodanis perfoliata (L.) Nieuwl.

Family: Campanulaceae
Genus: Triodanis

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Clasping Venus' looking-glass: Photograph of Triodanis perfoliata (syn. Specularia perfoliata ), taken in Machida city, Tokyo, Japan. — Photo: Sphl, CC BY-SA 3.0, from Wikimedia Commons

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Common names

By language (4)

Chinese: 異簷花, 穿叶异檐花
English: Clasping Venus' looking-glass, Claspingleaf Venus'-looking-glass, Venus' looking glass, Clasping bellflower
Japanese: キキョウソウ, ダンダンギキョウ
Swedish: Indianspegel

Synonyms

Campanula perfoliata L.
Dysmicodon perfoliatus Nutt.
Legousia perfoliata (L.) Britton
Pentagonia perfoliata (L.) Kuntze
Prismatocarpus perfoliatus (L.) Sweet
Specularia perfoliata A.DC.
Triodallus rupestris (Raf.) Raf. ex A.DC.

Characteristics

Growth habit: Forb/herb
Lifespan: Annual
In the US and Canada: Canada: native, Lower 48 states: native

Photos

Photo: Sphl, CC BY-SA 3.0, from Wikimedia Commons
Photo: Sphl, CC BY-SA 3.0, from Wikimedia Commons
Photo: Sphl, CC BY-SA 3.0, from Wikimedia Commons
Photo: Gabriela Ruellan, CC BY 3.0, from Wikimedia Commons
Photo: Fritzflohrreynolds, CC BY-SA 3.0, from Wikimedia Commons
Photo: gailhampshire from Cradley, Malvern, U.K, CC BY 2.0, from Wikimedia Commons
Photo: gailhampshire from Cradley, Malvern, U.K, CC BY 2.0, from Wikimedia Commons
Photo: Patrick Alexander from Las Cruces, NM, CC0, from Wikimedia Commons
Photo: Patrick Alexander from Las Cruces, NM, CC0, from Wikimedia Commons
Photo: Judy Gallagher, CC BY 2.0, from Wikimedia Commons
Photo: Judy Gallagher, CC BY 2.0, from Wikimedia Commons
Photo: Paul-in-KY, CC BY 4.0, from Wikimedia Commons

More in Triodanis

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0); common names, US characteristics from USDA PLANTS Database (2025-05-29, CC0 1.0). About our plant data.