| Family | Urticaceae |
| Scientific name | Pellionia brevifolia Bentham |
| Synonyms | Elatostema brevifolium (Bentham) A. Haller; Elatostema radicans (Siebold & Zuccarini) Weddell var. minimum (Makino) H. Schroeter; Pellionia minima Makino |
| Common name | (Japanese common name) arage-ba sansho sou (アラゲサンショウソウ, 粗毛山椒草 [meaning: rough hairy sansho weed (sansho = Zanthoxylum piperitum)]) |
| (English common name) none | |
| Distribution | (Japan) Kyushu (Miyazaki Prefecture, Kagoshima Prefecture) |
| (Other nations) China | |
| Habitat | Mountane forest, forest edge |
| Chromosomal number | 2n=39 |
| Description | Leaves 1-3cm long. Flowers flowering in September to December. Perennial plants. |
| Reference | Pellionia brevifolia Bentham |
| Chromosome Numbers of Japanese Pellionia (Urticaceae) | |
| Agent for hair growth (European Patent Application EP1915997/2008) |
| December 2008 at Tsukuba Botanical Garden |
December 2008 at Tsukuba Botanical Garden |