| Family | Phrymaceae (also placed in Scrophulariaceae) |
| Scientific name | Mazus goodenifolius (Hornemann) Pennell |
| Synonyms | Mazus delavayi auct., non Bonati; Mazus yakushimensis Sugimoto ex T. Yamazaki |
| Common name | (Japanese common name) hime-sagi-goke (ヒメサギゴケ, 姫鷺苔 [meaning: tiny heron moss]) |
| (English common name) none | |
| Distribution | (Japan) Kyushu, Okinawa |
| (Other nations) Taiwan, New Guinea | |
| Habitat | Mountane streamside rocks |
| Chromosomal number | 2n=20 |
| Description | Plants 5-15cm tall. Leaves 2-5cm long, 1-2cm wide. Flowers white (2 yellow spots) 7-10mm long, flowering in April to October. Winter annual plants. |
| Reference | Mazus goodenifolius Pennell |
| Revision of Mazus Lour. (Scrophulariaceae) in Taiwan | |
| Note | Rare species. |
| October 2009 at Tsukuba Botanical Garden |
October 2009 at Tsukuba Botanical Garden |
October 2009 at Tsukuba Botanical Garden |