| Family | Crassulaceae |
| Subfamily | Sedoideae |
| Tribe | Sedeae |
| Subtribe | Telephiinae |
| Scientific name | Orostachys malacophylla (Pallas) Fischer var. iwarenge (Makino) H. Ohba |
| Synonyms | Cotyledon iwarenge Makino; Orostachys iwarenge (Makino) H. Hara; Sedum iwarenge (Makino) Makino |
| Common name | (Japanese common name) iwa-renge (イワレンゲ, 岩蓮華 [meaning: rock lotus]) |
| (English common name) none | |
| Distribution | (Japan) Honshu (south of Ibaraki Prefecture), Kyushu |
| (Other nations) none | |
| Habitat | Seaside rocks |
| Chromosomal number | 2n=24 |
| Description | Leaves rosette ca. 10cm across. Scapes 10-20cm tall. Flowers white petals ca. 6-8mm long, flowering in September to November. Perennial plants. |
| Reference | Orostachys malacophylla (Pall.) Fisch. var. iwarenge (Makino) H. Ohba |
| Orostachys malacophylla var. iwarenge (Makino) H. Ohba | |
| Note | Rare species. |
| October 2009 at Minato Park in Hitachinaka City |
October 2009 at Minato Park in Hitachinaka City |
October 2009 at Minato Park in Hitachinaka City |
| October 2009 at Minato Park in Hitachinaka City |
| October 2009 at seaside rocks |
October 2009 at seaside rocks |
October 2009 at seaside rocks |
| April 2009 at seaside rocks |
April 2009 at seaside rocks |