| Family | Liliaceae |
| Subfamily | Lilioideae |
| Tribe | Lilieae |
| Scientific name | Fritillaria kaiensis Naruhashi |
| Synonyms | Fritillaria japonica Miquel forma alba H. Hara & Nakai |
| Common name | (Japanese common name) kai-ko-baimo (カイコバイモ, 甲斐小貝母 [meaning: Kai tiny baimo (Kai = an old name of Yamanashi Prefecture; baimo = Japanese pronunciation of Chinese common name of Fritillaria thunbergii)]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (Tokyo, Yamanashi Prefecture, Shizuoka Prefecture) |
| (Other nations) none | |
| Habitat | Mountane forest edge |
| Chromosomal number | 2n=24 |
| Description | Plants electing. Scapes 10-20cm tall. Leaves 5-6cm long. Flowers white perianths ca. 1.5-2cm long, flowering in March to April. Perennial plants. |
| Reference | Fritillaria kaiensis Naruh. |
| Fritillaria Icons | |
| The Endemic Fritillaria Species of Japan | |
| Note | Endemic to Japan. Rare species. |
| I took photos below at a private forest based on legal parmisshon by and attendance with the owner of the private forest. Special thanks to the owner of the forest. |
| March 2009 at forest edge in Hachioji City |
March 2009 at forest edge in Hachioji City |
March 2009 at forest edge in Hachioji City |
| March 2009 at forest edge in Hachioji City |