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

24a. Youngia japonica subsp. japonica

黄鹌菜(原亚种) huang an cai (yuan ya zhong)

Prenanthes japonica Linnaeus, Mant. Pl. 1: 107. 1767; Chondrilla japonica (Linnaeus) Lamarck; C. multiflora (Thunberg) Poiret; Crepis formosana Hayata; C. japonica (Linnaeus) Bentham; C. taquetii (H. Léveillé & Vaniot) H. Léveillé; Lactuca taquetii H. Léveillé & Vaniot; L. taraxacum H. Léveillé & Vaniot; Prenanthes fastigiata Blume; P. multiflora Thunberg; P. striata Blume; Youngia fastigiata (Blume) Candolle; Y. formosana (Hayata) H. Hara; Y. gracilis Miquel; Y. japonica subsp. formosana (Hayata) Kitamura; Y. japonica var. formosana (Hayata) H. L. Li; Y. multiflora (Thunberg) Candolle; Y. napifolia Candolle; Y. poosa Candolle; Y. runcinata Candolle.

Herbs usually 10-90 cm tall. Stems solitary or few, leafless and with only bracts or with 1 or 2(or more) leaves in basal ca. 1/3(-1/2). Basal leaves mostly to 15 × 5 cm. Involucre 4-5 mm. Outer phyllaries less than 1 mm. Anther tube ?usually 1.7-2 mm. Achene 1.5-2 mm. Pappus 2.5-3.5 mm. Fl. and fr. Feb-Dec. 2n = 16*.

Mountain slopes, mountain valleys, forests, forest margins, grasslands, moist areas, stream banks, trailsides, roadsides, disturbed places, as a weed in gardens and fields; below 100-4500 m. Anhui, Chongqing, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Hainan, Hebei, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Shandong, Sichuan, Taiwan, Xizang, Yunnan, Zhejiang [present in all easterly and southerly neighboring countries; originating probably from China and introduced pantropically, extending into adjacent subtropical regions].


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