Volume 7 > Part 1 > Year 1999 > Page 42 > Apocynaceae > Alstonia

1. Alstonia angustiloba Miq.wfo-0000951882

Fl. Ind. Bat. 2; 438. 1856; King & Gamble, J. As. Soc. Beng. 74(2): 438. 1907; Ridl., Fl. Malay Penins. 2: 347. 1923; Corner, Ways. Trees 142. 1940; Monachino, Pac. Sci. 3: 152. 1949; Backer & Bakh.f., Fl. Java 2: 226. 1965; Whitmore, Tree Fl. Mal. 2: 9. 1973; Markgr., Blumea 22: 24. 1974; Kochummen & Wong, Blumea 29: 521. 1984; Phengkhlai & Niyomdham, Fl. Peat Swamp Areas Narathiwat 175. 1991.— Paladelpha angustiloba (Miq.) Pichon, Bull. Mus. Nat. Hist. Nat. sér. 2, 19: 299. 1947.

Accepted Name : This is currently accepted.

Synonyms & Citations :

Description : Tree to 45 m tall, to 1 m diameter at breast height; trunk often buttressed. Bark brown or grey to whitish, inner bark mottled, yellow-brown, sapwood pale yellow-white. Branchlets glabrous; branches sparsely lenticellate or not. Leaves in whorls of 4–7; petiole 1.3–3.7 cm long; blade coriaceous, elliptic, 4.5–17 x 1.8–5.7 cm, oblong or obovate, apex acute to retuse, base cuneate to obtuse; secondary veins 30–57 pairs, close together, straight; glabrous; glands in the axils. Inflorescence 2.5–15 cm long; pubescent, sometimes glabrate on peduncle; many flowered, clustered; pedicels 1–2.5 mm long. Sepals ovate, 1.3–1.8 x 0.8–1.2 mm, apex acute to rounded; pubescent, ciliate. Corolla lobes overlapping to the left in bud; tube 5.6–7.5 mm long; lobes 44.6 x 1.5–2.4 mm, triangular; glabrous outside, pubescent inside except at base. Stamens inserted in upper half of corolla tube; anthers 0.9–1.2 x 0.3–0.4 mm. Disk very small and annular or absent. Ovary of 2 carpels, glabrous, 0.7–1 mm long; style + pistil head 3.1–5.6 mm. Fruit a pair of follicles; 20–30 cm long; pubescent or glabrate.

Thailand : PENINSULAR: Trang, Satun, Songkhla, Narathiwat.

Distribution : Malaysia, the Philippines, Indonesia (type).

Ecology : In evergreen or freshwater swamp forests or along peat swamp margin, 0–250m alt.

Vernacular : Tin pet lek (ตีนเป็ดเล็ก)(Songkhla).

Uses: Latex used for toothaches. The wood can be used for boxes, coffins, frames, furniture and handicrafts.