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

4. Doronicum oblongifolium Candolle, Prodr. 6: 321. 1838.

长圆叶多郎菊 chang yuan ye duo lang ju

?Doronicum tianshanicum C. H. An.

Rhizomes short, stout, ca. 2.5 cm in diam., sometimes tuberous, ascending, with black membranous bristles at collar of root. Stem solitary, erect, green, sometimes reddish violet in upper part, 25-30(-50) cm tall, glabrous, glandular hairy in upper part. Radical leaf petiole 16-20 cm; blade elliptic or obovate-oblong, 2-6(-10) × 1.5-2.5 cm, base tapered, attenuate, apex rounded-obtuse. Lower stem leaves similar to radical leaves but narrowed to large winged petioles, semiamplexicaul or sometimes sessile. Median stem leaves sessile, narrowly oblong, 4-8 × 2-3 cm, base semiamplexicaul, apex obtuse or rather acute. Upper leaves 3-4 × ca. 1 cm. All leaves glabrous, margin entire or sometimes terminal leaves inconspicuously dentate, glandular ciliate on margin. Capitula solitary, long pedunculate, 3-4 cm in diam., hemispheric, 1.2-2 cm. Phyllaries 1.2-2 cm, white pubescent, with long, simple, and orbicular glandular hairs; outer phyllaries lanceolate, 1.5-3.5 mm wide; inner phyllaries narrowly lanceolate, 1.2-3 mm wide. Ray florets 2.2-2.8 cm; corolla yellowish, with ca. 2 mm tube; lamina 18-24 × 3.6-5 mm, hairy at base, 4-6-veined, apically finely toothed. Disk florets 5-6 mm; corolla yellow, with ca. 2 mm tube and campanulate limb, lobes 1-1.5 mm, glabrous. Achenes heteromorphic, achenes in ray florets ca. 1.8 mm, glabrous, without pappus; achenes in disk florets 2-2.8 mm, adpressed hairy. Pappus white, 2-2.3 mm, bristly, serrate. Fl. Jun-Aug. 2n = 40.

Beside water canals, forest understories; 1800-2700 m. Xinjiang (Hami) [Kazakhstan, Mongolia, Russia (Siberia)].

Doronicum oblongifolium is similar to D. turkestanicum but differs in having radical leaves elliptic or obovate-oblong, inner phyllaries linear-lanceolate, tube of ray florets glabrous, and lamina hairy basally.


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