| Family | Linderniaceae (also placed in Scrophulariaceae) |
| Scientific name | Torenia concolor Lindley |
| Synonyms | Torenia concolor Lindley var. formosana Yamazaki; Torenia radicans Vaniot; Torenia rubens Bentham |
| Common name | (Japanese common name) turu-urikusa [vine urikusa (urikusa = Lindernia crustacea)] |
| (English common name) Kyushu (Amami Islands), Okinawa | |
| Distribution | (Japan) Kyushu (Amami Islands), Okinawa |
| (Other nations) China, Taiwan, Vietnam, Laos | |
| Chromosomal number | unknown |
| Description | Plants creeping. Leaves 1.5-2.2cm long. Flowers purple corollas 2.5cm, flowering in Mayo to November. |
| Reference | Torenia concolor Lindley |
| Note | Rare species. |
| September 2007 at Tsukuba Botanical Garden |
September 2007 at Tsukuba Botanical Garden |
September 2007 at Tsukuba Botanical Garden |