Calflora
Taxon  Report   8126    
Triodanis biflora  (Ruiz & Pav.) Greene
Venus looking glass,  Venus' looking glass
Triodanis biflora
© 2007 Neal Kramer
Photos from
CalPhotos / Calflora
Triodanis biflora
© 2015 Aaron Schusteff
Triodanis biflora
© 2003 Jim Rocks
Triodanis biflora, a dicot, is an annual herb that is native to California, is also found elsewhere in North America and beyond.

Interactive Distribution Map


Observation Hotline
(observation details)



point, line, or polygon

Plant Characteristics
and Associations


Bloom Period
Triodanis biflora
© 2017 John Game
Family: CAMPANULACEAE  
Genus: Triodanis
Communities: Yellow Pine Forest, Red Fir Forest, Lodgepole Forest, Foothill Woodland, Chaparral, Valley Grassland, (many plant communities)

Habitat: disturbed

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
PLANTS: Specularia biflora
PLANTS: Triodanis perfoliata var. biflora
More information about  Triodanis biflora
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on PlantID.net   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation

USDA PLANTS Profile (TRBI2)

Search the International Plants Names Index

Search efloras.org (Flora of North America)

website references from Google


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: Jan 23, 2019).