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

4a. Crepidiastrum denticulatum subsp. denticulatum

黄瓜假还阳参(原亚种) huang gua jia huan yang shen (yuan ya zhong)

Prenanthes denticulata Houttuyn, Nat. Hist. 10: 385. 1779; Chondrilla denticulata (Houttuyn) Poiret; C. hastata (Thunberg) Poiret; Crepidiastrum denticulatum var. cornutum Sennikov; C. denticulatum f. pinnatipartitum (Makino) Sennikov; Ixeris denticulata (Houttuyn) Stebbins; I. denticulata f. pinnatipartita (Makino) Stebbins; Lactuca denticulata (Houttuyn) Maximowicz; L. denticulata [unranked] pinnatipartita Makino; Paraixeris denticulata (Houttuyn) Nakai; P. denticulata f. pinnatipartita (Makino) Nakai; P. denticulata var. pinnatipartita (Makino) Barkalov; P. pinnatipartita (Makino) Tzvelev; Prenanthes hastata Thunberg; Youngia chrysantha Maximowicz; Y. denticulata (Houttuyn) Kitamura; Y. denticulata f. pinnatipartita (Makino) Kitamura; Y. hastata (Thunberg) Candolle.

Basal leaves and lower stem leaves oblanceolate, apex usually rounded. Middle stem leaves sessile, base very conspicuously auriculately clasping, auricles ± rounded; blade (including auricles) oblanceolate, obovate, pandurate, or more rarely ± elliptic, 3-12 × 1-7 cm, undivided, or pinnatifid or pinnatipartite, margin shallowly or more deeply dentate or entire; lateral lobes (if present) 2-4 pairs, opposite to subalternate, triangular-ovate, elliptic, or obovate; terminal lobe triangular-ovate to elliptic, much larger, apex rounded to subacute. Upper stem leaves similar to middle stem leaves but smaller, usually less incised or less dentate or entire. Involucre 7-8 mm. Inner phyllaries usually plane below apex. Achene 2.5-3.5 mm including a 0.2-0.5 mm beak. Pappus 3.5-4.5 mm. Fl. and fr. Aug-Feb. 2n = 10*.

Forests, forest margins, grasslands, cliffs, field margins; below 100-2000 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Jilin, Liaoning, Shandong, Shanxi, Zhejiang [Japan, Korea, Mongolia, E Russia, Vietnam].


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