Alstonia angustiloba

Primary tabs

Content

Description

Tree up to 40 m high, up to 60(-100) cm dbh, fluted at base and forming tall buttresses up to 8 m high. Bark rough, fissured and peeling off in rectangular flakes, greyish or brownish; Branchlets glabrous. Leaves in whorls of 4-7(-9); Inflorescence 3-9(-14) cm long, usually forming 2 umbels above each other, many-flowered; Flowers fragrant. Sepals pale green, connate at the base for 0.2-0.6 mm, erect or slightly spreading when dried, ovate, 1.2-2 by 0.7-1 mm, obtuse, sometimes acute, pubescent outside, glabrous or puberulous around the apex inside, ciliate. Stamens inserted at 4.2-5.8 mm from the base; Fruit a pair of follicles, (15-)20-35 cm by 1.6-2.3 mm, brownish tomentose. Seeds dark brown, oblong, 5-7 by 1.3-1.5 mm, minutely undulate and pubescent on the hilar side (except surrounding the hilum which is a glabrous elliptic belt), smooth and glabrous on the other side, ends rounded or obtuse, longest cilia 10-15 mm long.

Distribution

Asia-Tropical: Borneo present; Jawa (Jawa present); Malaya (Peninsular Malaysia present, Singapore present); Sumatera (Sumatera present); Thailand (Thailand present)

Thailand; in Malesia: Sumatra, Peninsular Malaysia, Singapore, Borneo, Java.

Uses

The latex is used in medicine to heal boils and abscesses. The wood is soft but can be used for matches and household items.

Citation

Sidiy. 1998 – In: Blumea. p 104

P.S. Ashton 1988 – In: Man. non-Dipt. Trees Sarawak. p 22

Kessler & Sidiy. 1994: Trees Balikpapan-Samarinda. p 52

King & Gamble 1907 – In: J. Asiat. Soc. Bengal. p 438

Miq. 1993 – In: PROSEA. p 87

Markgr. 1974 – In: Blumea. p 24

Cockburn 1976 – In: Trees Sabah. p 16

Masam. 1942: Enum. Phan. Born. p 617

Kochummen 1997: Tree Fl. Pasoh Forest. p 151

D.J. Middleton 2004 – In: Tree Fl. Sabah & Sarawak. p 17

Corner 1952 – In: Wayside Trees Malaya, ed. 2. p 142

Smythies 1965: Common Sarawak Trees. p 18

Backer & Bakh.f. 1965 – In: Fl. Java. p 226

Ridl. 1923 – In: Fl. Malay Penins. p 347

Miq. 2001 – In: PROSEA. p 65

J.A.R. Anderson 1980: Checklist Trees Sarawak. p 148

D.J. Middleton 1999 – In: Fl. Thailand. p 42

Whitmore & Tantra 1986: Checklist Sumatra. p 18

Monach. 1949 – In: Pacific Sci. p 152

Merr. 1921: Bibliogr. Enum. Born. Pl. p 497

Whitmore et al. 1990: Checklist Kalimantan. p 25

I.M. Turner 1993 – In: Gard. Bull. Singapore 45. p 34

F.G. Browne 1955: Forest Trees Sarawak & Brunei. p 63

Burkill 1935 – In: Dict. Econ. Prod. Malay Penins. p 112

I.M. Turner 1997 – In: Gard. Bull. Singapore 47. p 123

Coode et al. 1996: Checklist Pl. Brunei. p 25