Volume 13 > Part 2 > Year 2016 > Page 323 > Compositae (Asteraceae) > Gynura

12. Gynura truncata Kerrwfo-0000115225

Bull. Misc. Inform. Kew 1935(5): 331. 1935; Fl. Siam. 2(3): 290. 1936; H.Koyama, Mem. Fac. Sci. Kyoto Univ., Biol. 2: 36. 1968.

Accepted Name : This is currently accepted.

Description : Erect herb, to 1–1.5 m tall, hoary pubescent; stems striate, simple, branched above, branches ending in inflorescences. Leaves cauline; median leaves short petiolate; blade oblanceolate to ovate-oblong, ca 15 by 6 cm, apex acute or obtuse, base narrowed to petiole, margins irregularly serrulate, both surfaces hoary pubescent; petioles ca 0.5 cm long; leaves of lower part caducous. Inflorescences in loose corymbiform arrangement with many capitula; peduncles to ca 22 cm long. Capitula: involucres tubular, 10–12 mm long, 8–10 mm diam.; calyculate, calycular bracts 7, linear, 4–6 mm long; phyllaries ca 13–15, uniseriate, linear, 2–3 mm wide, apex acuminate; receptacle areolate, naked. Florets ca 60 per capitulum; corollas orange, ca 15 mm long, apex 5-lobed, lobes lanceolate, ca 1 mm long, basal tube ca 10 mm; style arms flattened, with introrsely marginal stigmatic lines and an elongate slender, hispidulous appendage. Achenes fusiform, ca 3.5 mm, 10-ribbed, ribs pale brown, grooves dark brown, densely papillose; pappus of capillary bristles, ca 12 mm long, caducous, snow-white.

Thailand : NORTHERN: Phitsanulok; NORTH-EASTERN: Phetchabun (Huai Pong); EASTERN: Nakhon Ratchasima (type: Kerr 20484 -BK BM K).

Distribution : Endemic.

Ecology : Deciduous forests, 200–860 m alt. Flowering: May–July.