| Family | Crassulaceae |
| Subfamily | Sedoideae |
| Tribe | Sedeae |
| Subtribe | Telephiinae |
| Scientific name | Orostachys japonica (Maximovicz) A. Berger |
| Synonyms | Cotyledon japonica Maximovicz; Orostachys erubescens auct., non (Maximovicz) Ohwi; Orostachys erubescens (Maximovicz) Ohwi var. japonica (Maximovicz) Ohwi; Orostachys erubescens (Maximovicz) Ohwi var. japonicus (Maximovicz) Ohwi; Orostachys japonicus (Maximovicz) A. Berger; Sedum erubescens auct., non (Maximovicz) Ohwi; Sedum erubescens (Maximovicz) Ohwi var. japonicum (Maximovicz) Ohwi; Sedum japonicola Makino |
| Common name | (Japanese common name) tume-renge (ツメレンゲ, 爪蓮華 [meaning: nail lotus]), hiroha-tume-renge (ヒロハツメレンゲ, 広葉爪蓮華 [meaning: broad leaved nail lotus]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (south of Kanto region), Shikoku, Kyushu |
| (Other nations) Russia, China, Korea | |
| Habitat | Rocks or house roof |
| Chromosomal number | 2n=24, 48 |
| Description | Leaves rosette ca. 2.5-6cm long, 5-15mm wide. Scapes 8-30cm tall. Flowers white petals ca. 5-6mm long, flowering in October to November. Perennial plants. |
| Reference | Orostachys japonica (Maxim.) A. Berger |
| Orostachys japonica A. Berger | |
| Orostachys japonica A. Berger | |
| Phylogenetic relationships among members of the subfamily Sedoideae (Crassulaceae) inferred from the ITS region sequences of nuclear rDNA | |
| Composition for preventing and treating type I allergy (US Patent 7211567/2007) |
| October 2009 at my home |
October 2009 at my home |
October 2009 at my home |
| October 2009 at my home |