| Family | Liliaceae |
| Subfamily | Calochortoideae |
| Scientific name | Tricyrtis latifolia Maximowicz |
| Synonyms | Tricyrtis bakeri Koidzumi; Tricyrtis makinoana Tatewaki; Tricyrtis puberula Nakai & Kitagawa |
| Common name | (Japanese common name) tamagawa-hototogisu (タマガワホトトギス, 玉川杜鵑 [meaning: Tamagawa hototogisu (Tamagawa = an aria near Kyoto City, hototogisu = Cuculus poliocephalus)]) |
| (English common name) Japanese toad lily | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) China | |
| Habitat | Mountane forest, streamside |
| Chromosomal number | 2n=26 |
| Description | Plants 40-110cm tall. Leaves 10-18cm long. Flowers yellow perianths each ca. 2cm long, flowering in July to September. Fruits 2mm. Perennial plants. |
| Reference | Tricyrtis latifolia Maximowicz |
| Tricyrtis latifolia Maxim. | |
| Tricyrtis latifolia Maxim. | |
| Note | Photos at Mr. Toda's garden below are those of some plants which were cultivated by Mr. Yuichi Toda in his private garden. |
| June 2009 at Mr. Toda's garden |
June 2009 at Mr. Toda's garden |
| June 2008 at Yukiguni Botanical Garden |
June 2008 at Yukiguni Botanical Garden |
June 2008 at Yukiguni Botanical Garden |
| June 2008 at Yukiguni Botanical Garden |