Volume 10 > Part 3 > Year 2010 > Page 343 > Convolvulaceae > Argyreia

4. Argyreia collinsae (Craib) Songkhla & Traipermwfo-0000157595

Thai Forest Bull. (Bot.) 33: 42. 2005.— Rivea collinsae Craib, Bull. Misc. Inform. Kew 1916. 266. 1916.— Lettsomia collinsae (Craib) Kerr, Bull. Misc. Inform. Kew 1941: 15. 1941; Fl. Siam. Enum. 3(2): 31. 1954. Plate XXXVI: 3.

Accepted Name : This is currently accepted.

Description : Woody climber; stems 6–15 m long, innovations herbaceous, whitish pubescent. Leaves cordate to orbicular 5.0–8.5 by 4–6 cm; base cordate, apex acute, chartaceous, both sides finely appressed puberulent; lateral veins 7–9 per side, prominent beneath; petiole 2.5–3.5 cm, hirsute. Inflorescences pendulous, lax cymes, 3–5-flowered; peduncles 1.5-2 cm, appressed pilose; pedicels 5–15 mm, slightly pubescent; bracts elliptic-oblong, 2–2.5 by 0.6–0.7 cm, reddish green, margin undulate, apex acute, outside slightly pilose, deciduous. Flower: sepals subequal, glabrous, apex cucullate in bud, outer 2 sepals ovate, 9–11 mm, apex obtuse, 3 inner sepals cordate, 11–13 mm, apex rounded; corolla campanulate, 2.5–4.5 cm long, waxy, glabrous, limb entire, recurved, purplish, tube gibbous near middle, white inside and out; stamens included, white, filament bases dilated, hairy; pistil included, disc cupular, subentire, ovary sunken in disc, glabrous, 2-celled. Berry ca 13 mm diameter, dark red, enclosed by enlarged calyx. Seeds 4, 11–12 mm long, dark brown, glabrous.

Thailand : NORTHERN: Nakhon Sawan; NORTH-EASTERN: Loei, Khon Kaen; EASTERN: Chaiyaphum, Surin, Si Sa Ket; SOUTH-WESTERN: Kanchanaburi, Phetchaburi, Prachuap Khiri Khan; CENTRAL: Saraburi; SOUTH-EASTERN: Chon Buri (Si Racha – type: Kerr 2149, syntypes BM E K; Collins 53, syntypes E K), Rayong.

Distribution : Cambodia, Vietnam.

Ecology : Formerly in coastal forests and mangrove habitats, now in secondary vegetation and scrub, roadsides, canal banks, in rice fields, pastures, thickets, dry deciduous forests, mixed evergreen-deciduous forests, often on limestone terrain or silty soil, 0–300 (rarely 900) m alt. Flowering: August–November; fruiting: January, September, November, December.

Vernacular : Kradueng chang (กระดึงช้าง)(Surin); phak bung chang (ผักบุ้งช้าง)(Kanchanaburi).

E-version notes : According to Plants of the World Online, as Argyreia collinsiae (Craib) Na Songkhla & Traiperm