| Family | Asteraceae (alt. Compositae) |
| Scientific name | Syneilesis palmata (Thunberg) Maximovicz |
| Synonyms | Arnica palmata Thunberg; Cacalia thunbergii Nakai; Senecio krameri Franchet & Savatier; Syneilesis palmata (Thunberg) Maximovicz var. subconcolor Nakai |
| Common name | (Japanese common name) yabure-gasa (ヤブレガサ, 破れ傘 [meaning: broken umbrella]) |
| (English common name) none | |
| Distribution | (Japan) Honshu, Shikoku, Kyushu |
| (Other nations) Korea | |
| Habitat | Mountane forest or forest edge. |
| Chromosomal number | unknown |
| Description | Plants electing 70-120cm tall. Leaves 35-39cm (sometimes 50cm) across, pedicels 7-15cm long. Flowers white 8-10mm across, flowering in July to August. Seeds 4.5-6mm long. Perennial plants. |
| Reference | Syneilesis palmata (Thunb.) Maxim. |
| Note | Syneilesis aconitifolia (Bunge) Maximovicz in Korea is not a synonym of Syneilesis palmata (Thunberg) Maximovicz. |
| June 2006 at my home |
June 2006 at Tsukuba Botanical Garden |
June 2008 at my home |
| May 2006 at mountane forest |
May 2006 at mountane forest |
May 2006 at mountane forest |