- Scientific Name: Triodanis perfoliata
- Family: Campanulaceae
- Common Names: Venus' looking glass, clasping bellwort
- Previous names and misapplications: Specularia perfoliata
- 1 Taxonomy
- 2 Description
- 3 Bloom Period
- 4 Distribution
- 5 Habitat
- 6 Uses
- 7 Propagation
- 8 Outplanting Characteristics and Requirements
- 9 Photo Gallery
- 10 References
|Genus:|| Triodanis Raf ex. Greene|
|Species:|| Triodanis perfoliata (L.) Nieuwl.|
General: Erect annual herbs, the stems erect, usually simple, 1-6 dm. tall, the surface rough.
Leaves: Leaves alternate, sessile, cordate-clasping, rotund-ovate, palmately veined, the leaves 0.5-3 cm. long and wide, or the lowermost ones narrower, more obovate, and short-petiolate.
Flowers: Flowers sessile in the axils of the middle and upper leaves, 1-several in each axil, in a leafy, spike-like arrangement; calyx lobes 5, divided to the base, narrowly triangular and pointed, 5-8 mm. long; corolla united, regular, the 5 lobes longer than the tube, 8-13 mm, long, deep purple to pale lavender; stamens 5, free from the corolla and from each other; the lower flowers do not open and the calyx of these is smaller and 3- or 4-lobed; ovary inferior.
Fruit: Capsules oblong, 2- or 3-celled, about 1 cm. long in the open flowers, half that size in the others.
- Flowering time: May to June
- Fruit ripening time: June to July
Attracts mega-chilid bee, sphecid wasps, leatherwing beetles 
Annual species but possible to mass in beds for pleasing purple colour.
Liquid compound of root taken for dyspepsia from overeating; Infusion of roots taken and used as a bath for dyspepsia; Used as an emetic.
- Seed collection time: June-August
- Crop intervals: Annual
Fruit and Seed Collection and Extraction
Collect capsules by hand into collection bags. Allow to dry, and then shake collection bags to release seeds.
Fruit/Seed Dormancy and Treatment
Sow seeds outdoors in flats or containers in late summer or early fall and allow dormancy to be broken naturally.
Outplanting Characteristics and Requirements
Plant in full sun to partial shade in coarse-textured, free-draining soils.
- WTU Herbarium, Burke Museum, & University of Washington. (n.d.). Retrieved from https://biology.burke.washington.edu/herbarium/imagecollection/taxon.php?Taxon=Triodanis%20perfoliata
- Seyermark, 1963
- Douglas et al, 2002
- USDA, 2002
- Haddock, 2000
- Gara and Meunhow, 1990
- Native American Ethnobotany Database. (n.d.). Retrieved from http://naeb.brit.org/uses/search/?string=triodanis