Volume 10 > Part 3 > Year 2010 > Page 399 > Convolvulaceae > Evolvulus

2. Evolvulus nummularius (L.) L.wfo-0001297240

Sp. Pl. ed. 2, 391. 1762; Ooststr., Meded. Bot. Mus. Herb. Rijks Univ. Utrecht 14: 114. 1934; Fl. Males. ser. 1, 5: 558. 1958; Songkhla & Khunwasi, Thai Forest Bull. (Bot.) 20: 19. 1993; R.C.Fang & Staples in C.Y.Wu & P.H.Raven, Fl. China 16: 276. 1995.— Convolvulus nummularius L., Sp. Pl. ed. 1, 157. 1753. Fig. 23; Plate XLIII: 4.

Accepted Name : This is currently accepted.

Description : Perennial herbs; stems prostrate, rooting at nodes, 20–40 cm, slender, villous or scabrous. Leaves distichous; blade suborbicular or broadly oblong, 1.3–1.7 by 1.2–1.4 cm, underside glabrous or appressed pilose, dark punctuate, base cordate to rounded, apex rounded or emarginate; lateral veins 2 or 3 pairs; petiole 2–4 mm. Flowers solitary or paired; peduncle absent or up to 2 mm; pedicel 2.5–3 mm, densely villous; sepals oblong-ovate to oblong, 3–4 by 2–3 mm, persistent, outer 2 slightly longer, pilose outside, margin ciliate; corolla broadly campanulate or subrotate, ca 6 mm, white, limb ca 7–8 mm diam., 5-lobed; stamens inserted at middle of corolla tube, filaments ca 1.5 mm, glabrous basally, anthers oblong; ovary globose, style lobes linear, ca 3 mm, stigmas minutely capitate. Capsule ovoid, 2–3 mm diam. Seeds 2–4, brown, ovoid-trigonous, ca 1 by 0.5 mm, minutely tuberculate.

Thailand : NORTHERN: Chiang Mai, Nan, Lamphun, Lampang, Phrae; CENTRAL: Krung Thep Maha Nakhon (Bangkok); SOUTH-EASTERN: Prachin Buri.

Distribution : Africa, India, Myanmar, China (Yunnan), Laos, Malaysia, widespread in N & S America (Jamica – type).

Ecology : Usually in sunny places in disturbed habitats along roads or trails, in vacant lots, on sandy, lateritic, or limestone soils in degraded scrub-bamboo forests, dipterocarp oak forests, secondary scrub forests, deciduous hardwood forests, 350–700 m alt. Flowering: June, July, September; fruiting: September.

Vernacular : Bai tang rian (ใบต่างเหรียญ)(Bangkok).