Australian Tropical Rainforest Plants - Online edition
Syzygium trachyphloium (C.T.White) B.Hyland
Hyland, B.P.M. (1983) Australian Journal of Botany Supplementary Series 9: 128.
Rough Barked Satinash; Satinash, Rough Barked; Watergum
Bark pale brown.
Leafy twigs generally 4-angled or shortly 4-winged, pairs of wings running down from each petiole but amalgamating and forming a pocket or hump above the next pair of leaves. Leaf blades about 3.7-9.6 x 1.8-4.5 cm, much paler on the underside. Midrib depressed and petiole grooved on the upper surface. Oil dots numerous, small, but visible to the naked eye.
Inflorescence frequently about 3-7 flowered, bracts deciduous, absent at anthesis. Calyx tube (hypanthium) + pedicel about 2-4 mm long, calyx tube (hypanthium) about 2.5-4 mm diam., calyx lobes rounded, concave, dimorphic, inner lobes larger, about 2-2.5 mm long. Petals +/- orbicular, 2.5-4 mm diam., oil dots visible, about 40-50 per petal. Outer staminal filaments about 4-5 mm long, anthers about 0.4-0.5 x 0.3-0.5 mm, gland comparatively large, terminal, near the back of the anther. Ovules about 13-18 per locule, placentas central, ovules radiating, ascending. Style about 4-6.5 mm long, approximating the stamens.
Fruits globular, excavated at the apex, attaining about 10-14 x 10-11 mm, calyx lobes persistent, inflexed, about 2-3 mm long. Seed solitary, attaining about 5-6 mm diam., testa +/- free from the succulent pericarp and free from or adhering slightly to the surface of the uniformly textured, petiolate, cotyledons. Radicle lateral or basal, cotyledonary stipules present.
This species produces millable logs and the sawn timber is marketed as Rough-barked Satinash, a useful general purpose structural timber. Wood specific gravity 0.54. Hyland (1983).