Volume 14 > Part 1 > Year 2018 > Page 144 > Polygonaceae > Persicaria

19. Persicaria runcinata (Buch.-Ham. ex D.Don) H.Grosswfo-0001245524

Bot. Jaarb. 49: 277. 1913; Grierson & D.G.Long, Fl. Bhutan 1(1): 164. 1983; Kantachot et al., Thai Forest Bull., Bot. 38: 146. 2010.— Polygonum runcinatum Buch.-Ham. ex D.Don, Prodr. Fl. Nepal: 73. 1825; Meisn. in Wall., Pl. Asiat. Rar. 3: 60. 1832; Meisn. in DC., Prodr. 14(1): 130. 1856; Hook.f., Fl. Brit. India 5: 43. 1886; Steward, Contr. Gray Herb. 88: 73. 1930; Backer & Bakh.f., Fl. Java 1: 221. 1963; P.H.Hô, Câyco Việtnam 1(2): 945. 1991; A.J.Li et al. in C.Y. Wu et al., Fl. China 5: 301. 2003; N.T.Do in Bân, Fl. Vietnam 11: 157. 2007.

Accepted Name : This is currently accepted.

Synonyms & Citations :

Description : Erect or ascending herbs; stem and branches terete, glabrous, nodes moderately pubescent. Leaves with petioles 4–5(–5.5) mm long, sparsely pubescent; lamina (2–)2.5–3 by 1.5–2(–2.5) cm, lyrate-pinnatifid, sparsely to moderately pubescent on upper surface, glabrous on lower surface, base runcinate, apex acuminate or acute, margin entire with hairs; secondary veins (6–)8–10(–12)-paired, primary vein and secondary veins with hairs on lower surface. Ocreae cylindrical, (6–)8–10 mm long, scarious, moderately pubescent, venation conspicuous, apex truncate and slightly oblique with sparse hairs, 0.5–1 mm long; auricles with hairs. Inflorescences terminal and axillary, capitate panicle, (4.5–)5–7.5 cm long, erect; inflorescence branches with glandular hairs; capitula (4–)6–8(–9) mm long, globose; leafy bracts (7–)15–20 by (4–)6–9 mm, glabrescent on both surfaces, ovate and amplexicaul, apex acute, margin with hairs. Flowers with hyaline bracteoles; ocreolae incompletely enclosing rachis, 4–5(–5.5) mm long, glabrous, apex acute or obtuse, margins entire without hispid hairs and bristles. Tepals 5, pinkish; lobes 1.5–2.5(–2.8) by 1–1.5 mm, pinkish, ovate, apex obtuse, without glandular dots, 3–5 veins present; tube 1–1.2 mm long, white, glandular nectaries 8. Stamens 8, anthers 0.2–0.4 mm long, oblong. Styles 3; stigmas capitate, white. Fruits with scarious perianth, triangular, 1.6–2 by 1.4–1.6 mm, shiny black.

Thailand : NORTHERN: Chiang Mai (Doi Inthanon).

Distribution : India, Nepal (type), Sikkim, Bhutan, Myanmar, China, Vietnam, Sumatra, Java, the Philippines.

Ecology : On rocks, 2,100–2,200 m alt.

Vernacular : Dok khao phot lueai (ดอกข้าวโพดเลื้อย).