31. Erigeron acris Linnaeus, Sp. Pl. 2: 863. 1753.
飞蓬 fei peng
Herbs, biennial or perennial, 5-70(-100) cm, taprooted or woody rhizomatous. Stems solitary or sometimes several, 1-6 mm in diam. at base, erect, branched in upper part, strigillose, ± hirsute or hispid, or sometimes glabrate, short-stipitate glandular below capitula. Leaves thin, surfaces sparsely to ± densely strigose-villous, glabrate, or glabrous, margin entire or remotely serrulate or serrate, strigose- or villous-ciliate; basal present or absent at anthesis, long petiolate, oblanceolate or oblong, 1.5-13 × 0.3-1.8 cm, inconspicuously 3-veined, base attenuate, apex obtuse or acute; mid and upper cauline sessile, blade lanceolate or oblong, 0.3-8.5 × 0.1-1 cm, base subclasping, apex acute, arcuate, or obtuse. Capitula numerous, in dense and narrow, or rarely loose and broad, paniculiform or sometimes corymbiform synflorescences, sometimes few in corymbiform synflorescences, 6-13 × 10-25 mm. Involucre hemispheric; phyllaries 3-seriate, green or purple, lanceolate to linear-lanceolate, abaxially ± densely villous or sparsely strigose, sometimes ± densely short-stipitate glandular, apex acute to acuminate, outer almost 1/2 as long as inner, inner shorter than disk florets, 5-7.5 × 0.5-1 mm, margin scarious. Ray florets 4- or 5-seriate, outer 2 or 3 series laminate, 5-7 mm, tube 2.5-3.5 mm, sparsely hairy, lamina pink or lilac, rarely white, ca. 0.25 mm wide, inner 2 series reduced to tube, uncolored, 2.5-3.5 mm, style exceeding tube by 1-2.2 mm, sometimes with rudimentary lamina; disk florets yellow, lobes sometimes ± purplish or dark lilac, 3.6-5.4 mm, sparsely hairy, tube 1.5-2.9 mm, limb cylindric or cylindric-funnelform, lobes lanceolate, 0.4-0.5 mm. Achenes straw-colored, oblong to oblong-lanceoloid, ± compressed, 1.6-2.5 mm, ± strigose, 2-veined. Pappus 1- or 2-seriate, white or whitish, outer bristles 0.2-0.5 mm, inner 4-6 mm. Fl. Jun-Sep.
Meadows, pastures, grasslands on slopes, forest margins; 700-3500 m. Gansu, Guangdong, Guangxi, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jilin, Liaoning, Nei Mongol, Qinghai, Shaanxi, Shanxi, Sichuan, Xinjiang, Xizang, Yunnan [Afghanistan, Bhutan, Japan, Kazakhstan, Korea, Kyrgyzstan, Mongolia, Russia (Kamchatka, Siberia), Uzbekistan; SW Asia, Europe, North America].
"Erigeron acer" is an alternate spelling.