- Scientific Name: Syneilesis aconitifolia (Bunge) Maxim.
- Ref: Mém. Acad. Imp. Sci. St.-Pétersbourg Divers Savans 9:165. 1859
- Synonyms: Cacalia aconitifolia Bunge, Senecio aconitifolius (Bunge) Turcz.
- Chinese Common Name: 兔儿伞 tùr∙sǎn
- Japanese Common Name: ホソバヤブレガサ [細葉破れ傘] hosobayaburegasa
- Family: Asteraceae
- Genus: Syneilesis
- Distribution: Forest margins on slopes, roadsides; 500-1800 m. Anhui, Fujian, Gansu, Guizhou, Hebei, Heilongjiang, Henan, Jiangsu, Liaoning, Shaanxi, Shanxi, Zhejiang [Japan, Korea, Russia (Far East)].
- Photo: 07/16/2008, Mt. Changbai, Jilin
Herbs, erect, 70-120 cm tall. Rhizomes procumbent, short, with many fibrous roots. Stem purple-brown, simple, glabrous. Stem leaves usually 2(or 3). Lower leaves long petiolate, peltate; petiole 10-16 cm, not winged, glabrous, base amplexicaul; blade abaxially gray, adaxially pale green, 20-30 cm in diam., palmately parted, segments 7-9, twice 2- or 3-fid, lobes 2.5-8 mm wide, linear-lanceolate, initially reflexed, closed umbraculiform, densely arachnoid-tomentose, later open umbraculiform, glabrescent, apex acuminate, irregularly acute. Median leaf petioles 2-6 cm; blades smaller, 12-24 cm in diam.; segments 4 or 5. Uppermost leaves sessile or shortly petiolate, bractlike, lanceolate. Capitula many, discoid, arranged in dense compound corymbs, 6-7 mm in diam.; peduncles 5-16 mm, with few linear bractlets. Involucres tubular, 9-12 × 5-7 mm, glabrous at base, margin scarious. Florets 8-10; corolla pink-white, ca. 1 cm, with narrow, 3.5-4 mm tube and narrowly campanulate limb; lobes 5. Anthers purple, basally shortly hastate. Style branches elongated, compressed, apically obtuse, penicillate-puberulent. Achenes cylindric, 5-6 mm, glabrous, ribbed. Pappus of capillary-like bristles, sordid white to reddish, 8-10 mm. Fl. Jun-Jul, fr. Aug-Oct. (Flora of China)
