Volume 15 > Part 1 > Year 2021 > Page 41 > Rubiaceae > Dimetia

5. Dimetia scandens (Roxb.) R.J.Wangwfo-0001335748

Molec. Phylogen. Evol. 67: 118. 2013; Neupane & N.Wikstr., Taxon 64: 315. 2015.— Hedyotis scandens Roxb. [Hort. Beng.: 10. 1814, nom. nud.] Fl. Ind. 1: 369. 1820; Kurz, J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 46(2): 135. 1877; Hook.f., Fl. Brit. Ind. 3: 56. 1880.

Accepted Name : This is currently accepted.

Description : Stems obtuse angular in young branch or round in old branch, glabrous, glabrescent or puberulent under node. Stipules sheath truncate, with 1 caudate lobe, keeled at caudate apex, sheath glabrous. Leaves narrowly elliptic, elliptic, ovate-lanceolate, or lanceolate, 5–11 by 1.5–4 cm, base rounded, acute, or attenuate, apex acuminate or acute, glabrous on both surfaces, lateral veins 3–5 pairs, inconspicuous; petiole sessile or up to 5 mm long, glabrous. Inflorescences terminal thyrses, paniculate, 4–7 cm long, 3–6 cm wide; ultimate branch umbellate with numerous flowers; peduncle 1–4 cm long, glabrous. Flowers white, tubular; pedicel 1–2 mm long. Calyx tube 0.5–1 mm long; lobes narrowly deltoid, 0.5–1 by 0.3–0.5 mm, apex acute, erect, glabrous. Corolla tube 1–2 by 1–1.5 mm; lobes oblong, 3.5–4 mm long, apex acute, outside glabrous, inside densely villous between mouth of corolla tube and middle lobes. Longistylous flowers: filament 0.8–1 mm long, villous; anther oblong, 0.8–1 mm long; style 4–4.5 mm long, slightly pubescent; stigma linear, 0.8–1 mm long. Brevistylous flowers: filament 2–3 mm long, villous; anther oblong, 1–1.2 mm long; disc glabrous; ovary glabrous; style 1–1.5 mm long, slightly pubescent; stigma linear, 0.8–1 mm long. Capsules subglobose, 3–4 by 2–3 mm. Seeds 15–30 per locule, 0.3–0.5 by 0.3–0.5 mm.

Thailand : NORTHERN: Chiang Rai (Doi Tung, Mae Sai).

Distribution : India (Assam), Bangladesh (type), Nepal, Myanmar, Laos, Vietnam, China (Yunnan).

Ecology : Hill evergreen forests, mossy forests open place and secondary evergreen forests, 0–1,300 m alt. Flowering. June–November.

Vernacular : Kamlung hua laman bai kliang (กำลังหัวละมานใบเกลี้ยง).

Notes: This species is distinguisted by having inconspicuous lateral leaf veins and stipules with one lobe.