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

31c. Erigeron acris subsp. politus (Fries) H. Lindberg, Enum. Pl. Fennoscandia. 56. 1901.

长茎飞蓬 chang jing fei peng

Erigeron politus Fries, Summa Veg. Scand. 1: 184. 1845; E. elongatus Ledebour (1833), not Moench (1802); Trimorpha elongata Vierhapper; T. polita (Fries) Vierhapper.

Herbs, 10-50 cm tall, sometimes ± caespitose; rhizome woody, ascending. Stems usually several, 1-4 mm in diam. at base, purple, rarely green, strigillose, sparsely hispid. Leaves green or with reddish petioles, glabrous, rigid, margin entire, strigose-ciliate; basal and lower cauline long petiolate, blade oblanceolate or oblong, 1-10 × 0.1-1.1 cm, apex obtuse; mid and upper sessile, blade oblong or lanceolate, 0.5-7 × ca. 0.8 cm, apex arcuate or obtuse. Capitula many, in corymbiform or corymbose-paniculiform synflorescences, often on long branches, 9-13 × 17-25 mm. Phyllaries 3-seriate, purple, rarely green, densely short-stipitate glandular, sometimes also sparsely hispid, apex acuminate, inner 5.5-7.5 × 0.7-1 mm. Ray florets: outer 6-8 mm, tube 3-4.3 mm, lamina pink or lilac, 0.3-0.5 mm wide, inner 2.5-4.5 mm, style exceeding tube by 1-1.7 mm, sometimes with rudimentary lamina; disk florets yellow, lobes dark lilac, 3.5-5 mm, tube ca. 2.3 mm. Achenes 2-2.5 mm. Pappus white, 1- or 2-seriate, inner 4.5-6 mm. Fl. Jul-Sep.

Meadows on slopes of low mountains, forest margins; 1900-2600 m. Gansu, Hebei, Heilongjiang, Jilin, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shanxi, Sichuan, Xinjiang, Xizang [Kazakhstan, Kyrgyzstan, Russia (Siberia); C and N Europe].


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