尖裂假还阳参 jian lie jia huan yang shen

Herbs 20-100 cm tall, annual or biennial. Root vertical, with many fibrous rootlets. Stem solitary, erect, branched predominantly in upper half, glabrous or rarely puberulent (subsp. pubescens). Leaves glabrous, or rarely puberulent (subsp. pubescens). Basal leaves and often lower stem leaves oblanceolate, apex rounded. Middle and upper stem leaves sessile, narrowly ovate, lanceolate, or rarely ± elliptic, base very conspicuously auriculately clasping, auricles ± rounded; blade including auricles pinnatifid, pinnatipartite, or subpinnatisect and often laciniately so. Synflorescences terminating main stem and branches, corymbiform or paniculiform, with few to many capitula. Capitula with 12-20 florets; peduncle capillaceous. Involucre 4.5-6.5 mm, narrowly cylindric. Phyllaries abaxially glabrous; outer phyllaries few, ovate, less than 0.5 mm, apex acute; inner phyllaries ca. (7 or)8, plane or more often weakly to strongly crested or corniculate below apex. Achene fusiform, 2-4.2 mm including a slender 0.4-1.8 mm beak. Pappus white, 2-3 mm.

Grasslands on mountain slopes, thickets, floodplains, rocky stream beds, cliffs, roadsides; below 100-1900 m. Anhui, Chongqing, Gansu, ?Guangxi, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Jilin, Liaoning, Nei Mongol, Shaanxi, Shandong, Shanxi, Sichuan [Korea, Mongolia, E Russia].

Lower Taxa

• Crepidiastrum sonchifolium subsp. pubescens (Stebbins) N. Kilian
• Crepidiastrum sonchifolium subsp. sonchifolium