Trigonopleura malayana

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Trigonopleura malayana


Trees, up to 27 m high; Bark with watery, yellow exudate; Leaves: Stipules obovate, 2.5-9 by 0.8-3 mm. Flowers 5-6 by 4-7 mm diam., fragrant; Fruits 0.9-1.3 by 1-1.3 cm high, red to purple; Seeds 4.5-5.7 by 4.5-5.2 mm;


Asia-Tropical: Borneo present (Kalimantan present, Sabah present, Sarawak present); Malaya (Peninsular Malaysia present); Sulawesi (Sulawesi present); Sumatera (Sumatera present), Indonesia present
Malesia: Peninsular Malaysia, Sumatra, Borneo (Indonesian Kalimantan, Sabah, Sarawak), and one specimen is known from Sulawesi (bb 29657).


The leaves can be eaten fresh or dried above a fire as a substitute of gambir when chewing sireh. The wood is used as fire wood.


1. This species is widespread on the Sunda Shelf and it is somewhat variable. In Peninsular Malaysia two forms are found, in the northern half the plants have narrow, grooved petioles and are almost glabrous, in the southern half the petioles are broad, more flat and the plants are very hairy. Examples of glabrous, narrow-petioled specimens: Curtis 1523, 3670, 3743; KEP 94455, 104857; KEP FRI 4488, 5745, 8324, 13303, 16136; King’s collector 3610, 3650, 7587, 10178; Scortechini 738, 2056. Examples of pilose, broad-petioled specimens: CF 1977; KEP 105025; KEP FRI 7901, 7905, 7985, 16937; Maingay 1452; Maxwell 82-102; Sinclair 10588. No taxonomic distinction has been made, because the southern form is also found on Sumatra and Borneo, where subglabrous specimens are found with often also narrower petioles.
2. On Borneo the specimens can vary between (sub)glabrous (see note under G. macro- carpa), and then they are often found at higher altitudes, to hairy in most specimens to extremely hairy. The glabrous and very hairy forms are not geographically restricted. Examples of glabrous specimens are mentioned in the note under G. macrocarpa, examples of very hairy specimens are: Endert 1960; Guigonis 306; W. de Jong 445; Paymans 78.


Welzen, Bulalacao & On 1995: p. 372. – In: Blumea: f. 2a, d-g, map 2
Ridl. 1924 – In: Fl. Malay Penins.: 263
Ridl. 1922 – In: Fl. Malay Penins.: 290
Whitmore 1973 – In: Tree Fl. Malaya: 134
Stern 1967: 665, 667, 671. – In: Amer. J. Bot.: f. 10
Hook.f. 1981 – In: Kew Bull.: 350
Pax & K.Hoffm. 1911: p. 95. – In: Engl., Pflanzenr. 147: f. 1b-d, 30
Airy Shaw 1975 – In: Kew Bull.: 201
Hook.f. 1888 – In: Hooker’s Icon. Pl.: t. 1753