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FOC | Family List | FOC Vol. 20-21 | Asteraceae | Ligularia

2. Ligularia dentata (A. Gray) H. Hara, J. Jap. Bot. 15: 318. 1939.

齿叶橐吾 chi ye tuo wu

Erythrochaete dentata A. Gray, Mem. Amer. Acad. Arts, n.s., 6: 395. 1858; Ligularia clivorum Maximowicz; L. japonica (Thunberg) Lessing var. clivorum (Maximowicz) Makino; Senecillis dentata (A. Gray) Kitamura; Senecio clivorum (Maximowicz) Maximowicz; S. japonicus (Thunberg) Schultz Bipontinus var. integrifolius Matsumura; S. labordei Vaniot.

Stem erect, 30-120 cm tall, ca. 1.2 cm in diam. at base, proximally glabrous, distally and branches of synflorescence white arachnoid-puberulent and shortly yellow pilose. Basal leaves petiolate; petiole 22-60 cm, stout, white puberulent, palmately veined with 5-7 principal veins, base sheathed; leaf blade abaxially grayish white, adaxially green, reniform, 7-30 × 12-38 cm, abaxially white puberulent, adaxially glabrous, margin regularly dentate, ciliate between teeth, apex rounded. Stem leaves similar but smaller; distal stem leaves sessile, broadly sheathed. Synflorescence corymbose or compound corymbose, spreading; peduncles to 9 cm, white arachnoid-puberulent and shortly yellow pilose; leaflike bracts ovate to linear-lanceolate, margin denticulate; supplementary bracts absent. Capitula numerous. Involucre hemispheric, broader than long, 1.5-2.5 × 1.8-3 cm, outside densely white arachnoid-puberulent; phyllaries 8-14, closely imbricate, oblong, to 1 cm wide; inner phyllaries 2-carinate on convex outside and margin brown membranous. Ray florets yellow; lamina narrowly oblong, to 5 cm × 4-7 mm, apex acute; tube 7-12 mm. Tubular florets numerous, 1-1.8 cm. Achenes brown, cylindric, 7-10 mm, ribbed. Pappus reddish brown, as long as tubular corolla. Fl. and fr. Jul-Oct.

Grassy slopes, riversides, forest margins, forest understories, sometimes cultivated in gardens; 700-3200 m. Anhui, Gansu, Guangxi, Guizhou, ?Hebei, Henan, Hubei, Hunan, Jiangxi, Shaanxi, Shanxi, Sichuan, Yunnan, Zhejiang [Japan, Myanmar, Vietnam; cultivated in Europe].


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