| Family | Urticaceae |
| Scientific name | Pellionia yosiei Hara |
| Synonyms | Pellionia keitaoensis Yamamoto forma yosiei (H. Hara) Hatusima |
| Common name | (Japanese common name) naga-ba sansho sou (ナガバサンショウソウ, 長葉山椒草 [meaning: long leaved sansho weed (sansho = Zanthoxylum piperitum)]) |
| (English common name) none | |
| Distribution | (Japan) Kyushu (Miyazaki Prefecture, Tsushima Island) |
| (Other nations) none | |
| Habitat | Mountane wet forest |
| Chromosomal number | 2n=39 |
| Description | Leaves max 9cm long. Flowers flowering in April to June. Perennial plants. |
| Note | Some authors may describe that Pellionia yoshiei Hara should be identified as Pellionia keitaoensis Yamamoto. Pellionia keitaoensis Yamamoto can be found in Okinawa. |
| February 2007 at Tsukuba Botanical Garden |
February 2007 at Tsukuba Botanical Garden |
February 2007 at Tsukuba Botanical Garden |
| February 2007 at Tsukuba Botanical Garden |
February 2007 at Tsukuba Botanical Garden |
February 2007 at Tsukuba Botanical Garden |
| February 2007 at Tsukuba Botanical Garden |
February 2007 at Tsukuba Botanical Garden |