矩叶垂头菊 ju ye chui tou ju

Cremanthodium nakaoi Kitamura; Ligularia arnicoides Candolle ex Royle var. glabra Candolle; Senecio oblongatus (C. B. Clarke) Franchet; S. pyrolifolius H. Léveillé.

Stems 1 or 2, erect, often purplish red, 8-20 cm tall, 2-3 mm in diam. at base, proximally glabrous, distally white puberulent. Basal leaves petiolate; petiole purplish red, winged, 1.5-5 cm, glabrous; leaf blade oblong, orbicular, or elliptic, 2-8 × 1.5-5 cm, thick, glabrous, pinnately veined, base subrounded to cuneate, margin entire and coarsely dentate, apex obtuse or rounded. Stem leaves 3 or 4, sessile, oblong to lanceolate, 1-4.5 × to 1.5 cm, base semiamplexicaul, margin remotely dentate, apex obtuse or acute. Capitulum solitary, nodding. Involucre hemispheric, 9-12 × to 25 mm, outside black when dry, white arachnoid-puberulent; phyllaries 10-14, in 2 rows, 2-3 mm wide; outer phyllaries lanceolate, apex acuminate; inner phyllaries ovate-lanceolate, 5-8 mm wide, margin yellowish brown membranous. Ray florets yellow; lamina oblong, 1-2.5 cm × 2-5 mm, apex acuminate or acute; tube to 5 mm. Tubular florets numerous, dark yellow, 7-8 mm; tube ca. 2 mm. Achenes brown, cuneate-cylindric, 4-5 mm. Pappus white, as long as tubular corolla. Fl. Jul-Aug, fr. Aug-Sep.

Gravelly areas on mountains, alpine meadows; 4500-5300 m. S Xizang [India, Nepal].