尖齿狗舌草 jian chi gou she cao

Cineraria subdentata Bunge, Enum. Pl. China Bor. 39. 1833; C. pratensis Hoppe ex Reichenbach var. borealis Herder; Crepis chanetii H. Léveillé; Senecio campestris (Retzius) Candolle var. subdentatus (Bunge) Maximowicz; S. imaii Nakai; S. linaresensis Soldano; S. pratensis (Hoppe ex Reichenbach) Candolle var. polycephalus Regel; S. pseudosonchus Vaniot var. borealis (Herder) S. Y. Hu; S. pseudosonchus var. polycephalus (Regel) Kitamura; S. subdentatus (Bunge) Turczaninow (1837), not Ledebour (1833); S. subdentatus var. borealis (Herder) Cufodontis; S. subdentatus var. polycephalus (Regel) Cufodontis; Tephroseris polycephala (Regel) Barkalov.

Herbs, rhizomatous. Stem solitary, erect, leafy, 20-60 cm tall, at first sparsely arachnoid, ± glabrescent. Radical leaves several, rosulate, usually present at anthesis, long petiolate; petiole 2-13 cm, narrowly winged, sparsely arachnoid, glabrescent, basally expanded; leaf blade spatulate, linear-spatulate, or oblanceolate, 6-15(-22) × 1-2 cm, papery, both surfaces sparsely arachnoid and glabrescent, pinnately veined, base gradually narrowed into petiole, margin entire, subentire, or irregularly mucronulate-dentate, apex obtuse to subacute. Lower stem leaves similar to radical leaves. Median leaves sessile, lanceolate to linear, 4-9 × 0.5-1 cm, smaller upward, margin entire or few toothed, apex acute or acute-acuminate. Upper leaves linear or linear-subulate, bractlike. Capitula 1.5-2 cm in diam., 7-30, arranged in terminal subumbelliform corymbs or compound corymbs; peduncles 1.5-3 cm, sparsely arachnoid and fulvous puberulent, basally bracteate; bracts linear-subulate, 7-8 mm, apically acuminate. Involucres campanulate, 4.5-5 × 4-5 mm, not calyculate; phyllaries 18-20, lanceolate or linear-lanceolate, 0.5-1 mm wide, herbaceous, with narrow membranous margin, glabrous, apex acuminate or long acuminate and green or somewhat purplish. Ray florets 13-15, corolla tube ca. 4 mm, glabrous; lamina yellow, oblong, 6-7 × 1.5-2 mm, 4-veined, apically 3-denticulate, obtuse. Disk florets many; corolla yellow, 6-7 mm with ca. 3.5 mm tube and funnelform limb; lobes oblong-lanceolate, ca. 1 mm, apically acute, papillose. Anthers ca. 1.5 mm, basally obtuse, appendages ovate-lanceolate. Style branches ca. 0.7 mm. Achenes cylindric, ca. 2 mm, glabrous. Pappus white, 6-9 mm. Fl. Jun-Jul.

Wet meadows, damp places. Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Qinghai [Korea, Russia (Far East, E Siberia)].

Probatova and Barkalov (in Kozhevnikov & Probatova, Fl. Ross. Dal’nego Vostoka, 253. 2006) elevated Senecio pratensis var. polycephalus to the rank of species, i.e., Tephroseris polycephala, which is doubtfully specifically distinct.