| Family | Crassulaceae |
| Subfamily | Sedoideae |
| Tribe | Sedeae |
| Subtribe | Telephiinae |
| Scientific name | Hylotelephium sordidum (Maximovicz) H. Ohba |
| Synonyms | Hylotelephium sordidum (Maximovicz) H. Ohba var. oishii (Ohwi) H. Ohba et M. Amano; Sedum oishii Ohwi, Sedum sordidum Maximovicz |
| Common name | (Japanese common name) chichippa-benkeisou (チチッパベンケイソウ, 乳葉弁慶草 [meaning: milky leaved Benkei weed (Benkei = a famous priest in medieval era of Japan)]), oh-chichippa-benkeisou (オオチチッパベンケイソウ, 大乳葉弁慶草 [meaning: large milky leaved Benkei weed) |
| (English common name) none | |
| Distribution | (Japan) Honshu (north of Central region) |
| (Other nations) none | |
| Habitat | Mountane rocks |
| Chromosomal number | 2n=24 (occasionally 2n=22) |
| Description | Scapes 10-25cm tall. Leaves 2.5-4.5cm long, 1.5-3cm wide. Flowers pale green petals ca. 3-4mm long, calyxs ca. 1mm long, flowering in September to October. Perennial plants. |
| Note | Rare species. |
| Photo by Madame Popow |
| October 2006 at mountane roadside in Niigata Prefecture |
| November 2007 at mountane roadside in Niigata Prefecture |
November 2007 at mountane roadside in Niigata Prefecture |
November 2007 at mountane roadside in Niigata Prefecture |
| November 2007 at mountane roadside in Niigata Prefecture |