Dyera polyphylla (Miq.) Steenis

Tree to 60 m tall, dbh to 200 cm; knee-shaped pneumatophore roots present, these chocolate brown and with paler lenticels. Bark chocolate-brown or greyish brown with corky paler lenticels and horizontal ridges; inner bark cream; wood cream. Branchlets 11-14 mm wide, glabrous. Leaves in whorls of 6-8; stipules 4.5-5 mm long; petiole 2.1-4.5 cm long; blade coriaceous or subcoriaceous, obovate, 4-24 by 2.3-10.7 cm, 1.7-2.9 times as long as wide, apex retuse or, more rarely, rounded, obtuse or apiculate, base cuneate, margin not crenulate or only weakly so, glabrous above and beneath, glaucous beneath, midrib flat or slightly raised above, 17-32 pairs of secondary veins with 3-12 mm spacing, 65-75° from midrib, more or less straight to curved ascending, slightly prominent or flat above, not prominent beneath, tertiary venation reticulate to somewhat scalariform, not prominent above or beneath. Inflorescence arranged in whorls, 8.5-14 cm long, glabrous; peduncle 4-11 cm long, sometimes with reduced leaves at apex; pedicels 1.5-3 mm long. Sepals ovate to orbicular, apex rounded or obtuse, 1-1.4 by 1-1.4 mm, 0.9-1.2 times as long as wide, not ciliate, glabrous. Corolla tube 1-3 mm long, 0.35-1 times as long as lobes, glabrous or slightly pubescent beneath stamens inside, glabrous outside; lobes 1.8-4 by 1-1.7 mm, 1.4-3 times as long as wide, glabrous outside and inside, not ciliate. Stamens inserted 0.5−0.6 mm from corolla base which is 0.4-0.43 of tube length; filaments c. 0.3 mm long; anthers 0.8-1.5 by 0.3-0.4 mm, 2.7-3.8 times as long as wide, exserted 0.1-0.8 mm from corolla throat. Ovaries 0.5-0.9 mm long; style 0-0.1 mm long; style head c. 0.5 mm long. Fruit 22−30 by 1.8−4 cm. Seeds: grain 1.8−2 by 0.8−1.2 mm, 3.7−4.5 by 1.2−1.5 with wing.

Restricted to, and scattered in, swamp forest, peat-swamp forest and kerangas on ground water podzols.

Can be grown by seedlings.