| Family | Orobanchaceae (also placed in Scrophulariaceae) |
| Scientific name | Melampyrum laxum Miquel |
| Synonyms | Melampyrum laxum Miquel var. nikkoense Beauverd; Melampyrum laxum Miquel var. nikkoense Beauverd forma albiflorum Hara; Melampyrum laxum Miquel var. nikkoense Beauverd forma edentatum (Tuyama) Yamazaki |
| Common name | (Japanese common name) miyama-mamako-na (ミヤマママコナ, 深山飯子菜 [meaning: mountain rice grain weed]) |
| (English common name) none | |
| Distribution | (Japan) Hokkaido, Honshu, Shikoku, Kyushu |
| (Other nations) China | |
| Habitat | Dry mountane forest |
| Chromosomal number | 2n=18 |
| Description | Plants 20-50cm tall. Leaves 3-6cm long, 8-20mm wide. Flowers purple, pink or white corollas 16-18mm, flowering in August to September. Fruits ca. 1cm long, seeds 3.5-4mm long. Annual plants. |
| Reference | Melampyrum laxum Miquel |
| August 2007 at mountane forest edge |
August 2007 at mountane forest edge |
August 2007 at mountane forest edge |
| August 2007 at mountane forest edge |
August 2007 at mountane forest edge |