| Family | Campanulaceae |
| Subfamily | Campanuloideae |
| Scientific name | Triodanis biflora (Ruiz López & Pavón) Greene |
| Synonyms | Asyneuma anhuiense B. A. Shen; Campanula biflora Ruiz López & Pavón; Campanula ludoviciana Riddell; Campanula montevidensis Sprengel; Dysmicodon californicum Nuttall; Dysmicodon ovatum Nuttall; Legouzia biflora (Ruiz López & Pavón) Britton; Lobelia humboldtiana Willdenow ex Schultes; Pentagonia biflora (Ruiz López & Pavón) Kuntze; Specularia biflora (Ruiz López & Pavón) Fischer & C. Meyer; Specularia californica (Ruiz López & Pavón) Vatke; Specularia ovata (Nuttall) Vatke; Specularia perfoliata (L.) A. de Candolle forma ramosa Arechavaleta; Specularia perfoliata (L.) A. de Candolle forma rigida Arechavaleta; Triodanis perfoliata (L.) Nieuwland subsp. biflora (Ruiz López & Pavón) Lammers; Triodanis perfoliata (L.) Nieuwland var. biflora (Ruiz López & Pavón) T. R. Bradley |
| Common name | (Japanese common name) hina kikyou-sou (ヒメキキョウソウ, 姫桔梗草 [meaning: tiny Campanula weed]) |
| (English common name) none | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu |
| (Other nations) [native] USA, Mexico, Bolivia, Ecuador, Peru, Brazil, Argentina, Chile, Paraguay | |
| Chromosomal number | unknown |
| Description | Plants electing 15-40cm tall. Leaves 1-3cm long. Flowers blue purple ca. 1cm, flowering in May to July. Annual plants. |
| Reference | Triodanis biflora (Ruiz & Pav.) Greene |
| Triodanis biflora (Ruiz & Pav.) Greene | |
| Specularia biflora (R. & P.) Fisch. & Mey. | |
| Note | Naturalized plants (first collected in 1931, first reported in 1941). |
| June 2008 at Kochi Prefecture Makino Botanical Garden |
June 2008 at Kochi Prefecture Makino Botanical Garden |
June 2008 at Kochi Prefecture Makino Botanical Garden |