显脉垂头菊 xian mai chui tou ju

Stem solitary, erect, 20-40 cm tall, slender, 2-3.5 mm in diam. at base, black pilose. Basal leaves petiolate; petiole purple, 4-5 cm, glabrous; leaf blade ovate or oblong-ovate, 4.5-9 × 2.5-6.5 cm, glabrous, pinnately veined, both surfaces with prominent reticulate veins, base cordate to subtruncate, margin regularly denticulate, apex rounded. Stem leaves smaller distally, proximal leaves petiolate, base sheathed, distal leaves linear-lanceolate. Capitula solitary or 3 in raceme, nodding; peduncles 1.5-3.5 cm, black pilose. Involucre hemispheric, 8-12 × 12-20 mm, outside glabrous or black pilose; phyllaries 10-16, in 2 rows, lanceolate, 3-4 mm wide, apex acuminate, white ciliate; inner phyllaries broader, margin membranous. Ray florets yellow; lamina broadly elliptic, 1-1.5 cm × 4-6 mm, apex rounded, 3-denticulate; tube ca. 2 mm. Tubular florets numerous, yellow, 6-7 mm; tube ca. 1 mm. Achenes (immature) ca. 3 mm. Pappus white, as long as tubular corolla. Fl. Aug, fr. Aug-Sep.

● Grassy slopes; 3500-4800 m. S Xizang.