| Family | Crassulaceae |
| Subfamily | Sedoideae |
| Tribe | Sedeae |
| Subtribe | Sedinae |
| Scientific name | Sedum japonicum Siebold ex Miquel |
| Synonyms | Sedum chrysastrum Hance; Sedum uniflorum Hooker & Arnott subsp. japonicum (Siebold ex Miquel) H. Ohba |
| Common name | (Japanese common name) meno-man-nen-gusa (メノマンネングサ, 雌万年草 [meaning: female thousand years weed]) |
| (English common name) none | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu |
| (Other nations) Korea, China, Taiwan | |
| Habitat | Seaside rocks or field, mountane rocks |
| Chromosomal number | n=19, 2n=38 |
| Description | Plants 5-15cm tall. Leaves 5-12mm long, ca. 2mm wide. Flowers 5 yellow petals each 6-7mm long, flowering in May to June. Perennial plants. |
| Reference | Sedum japonicum Siebold ex Miquel |
| May 2008 at Sanri-ga-hama Beach |
May 2008 at Sanri-ga-hama Beach |
May 2008 at Sanri-ga-hama Beach |
| May 2008 at Sanri-ga-hama Beach |
May 2008 at Sanri-ga-hama Beach |