9. Inula helianthus-aquatilis C. Y. Wu ex Y. Ling, Acta Phytotax. Sin. 10: 178. 1965.
水朝阳旋覆花 shui chao yang xuan fu hua
Inula serrata Bureau & Franchet, J. Bot. (Morot) 5: 50. 1891, not Persoon (1807).
Herbs, perennial. Rhizome long, usually with scalelike leaves and stolons. Stems 30-80 cm tall, pubescent and glandular. Leaves ovate-lanceolate or lanceolate, rarely ovate, 4-10 × 1.4-4 cm, abaxially yellow glandular, pubescent on abaxial veins, adaxially glabrous, margin densely toothed, apex acute or acuminate; bases of lower leaves usually gradually narrower to petioles; upper leaves sessile, base rounded or cuneate, or auriculate, semiamplexicaul; lateral veins 7 or 8 pairs, abaxially prominent. Capitula solitary on top of stems and branches, 2.5-4.5 cm in diam. Involucre hemispheric, 7-9 mm × 1-1.5 cm; phyllaries in 4 or 5 series, subequal, outer ones linear-lanceolate, leaflike adaxially, pubescent, inner linear-lanceolate, abaxially glabrous, margin membranous and ciliate. Ray florets yellow; lamina linear, ca. 15 mm. Disk florets yellow; corolla ca. 3 mm, with lanceolate lobes. Achenes cylindric, 10-striped, glabrous. Pappus white, of 10 or 11 bristles, ca. 2 mm. Fl. Jun-Oct, fr. Sep-Oct.
● Grassy slopes, fields, shrublands; 1200-3000 m. Gansu, Guizhou, Sichuan, Yunnan.
Inula helianthus-aquatilis f. rotundifolia Y. Ling (Acta Phytotax. Sin. 10: 178. 1965; 圆叶旋覆花 yuan ye xuan fu hua), described from NW Yunnan (Lijiang; 2600-2700 m, marshy grasslands), has stems densely leafy and middle leaves ovate, 2.5-4.5 × 2-3 cm, with base cordate and amplexicaul, margin coarsely serrate, and apex rounded.