Syzygium armstrongii (Benth.) B.Hyland
Hyland, B.P.M. (1983) Australian Journal of Botany Supplementary Series 9: 54.
Bracts sometimes present at anthesis, subulate, about 0.8-1.1 mm long. Flowers conspicuously pedicellate, calyx tube (hypanthium) + pedicel about 4-7.5 mm long, calyx tube (hypanthium) about 2-4 mm diam., calyx lobes dimorphic, rounded, larger lobes about 1-1.5 mm long. Petals orbicular, about 4 mm diam., oil dots numerous, conspicuous, more than 30 per petal. Outer staminal filaments about 3-7 mm long, anthers about 0.5 x 0.5 mm, gland terminal, near the back of the anther. Ovules about 5-9 per locule, placentas axile, central, ovules radiating, ascending. Style about 5.5-9.5 mm long, equal to or exceeding the stamens.
Fruits depressed globular, wider than long, attaining about 15 x 22 mm, surface conspicuously rugose, pericarp succulent-spongy, containing many large oil glands, particularly near the epidermis, calyx lobes persistent, inconspicuous, about 1 mm long. Seed solitary, about 8-10 x 12-14 mm, testa attached to the pericarp but much more strongly attached to the outer surface of the cotyledons by short, dark, tanniferous, root-like protrusions, cotyledons uniformly textured except for the peripheral layer. Radicle basal, cotyledonary stipules present.
Cultivated to a small degree around Darwin where it makes a fine shady street tree or for parks and gardens.
Wood specific gravity 0.67. Hyland (1983).