Falcataria toona (F.M.Bailey) Gill.K.Br., D.J.Murphy & Ladiges

Brown, G.K., Murphy, D.J. & Ladiges, P.Y. (2011). Cladistics 27: 10.

Acacia Cedar; Cedar, Acacia; Cedar, Mackay; Mackay Cedar; RED SIRIS; Siris, Red

Deciduous; leafless for a period in September or October. Heartwood pink or red.

Leaflets very small, about 3-9 mm long. A fairly large raised gland normally visible on the upper surface of the compound leaf petiole about 5-20 mm from the twig. Similar, but smaller, glands sometimes visible at the point of attachment of the secondary axes.

Flowers sessile. Calyx and corolla almost glabrous on the outer surface. Corolla tube about 4.5 mm long, lobes about 1.5-2 mm long. Staminal filaments about 5-10 mm long, fused to form a tube in the lower half, but free in the upper half. Ovary sessile, ovules about 8-10.

Pods flat, about 10-13 x 2-2.5 cm. Seeds flat, about 9 x 7 mm, marked by a pleurogram.

Cotyledons fleshy, without venation. First pair of leaves bipinnate. At the tenth leaf stage: leaflet blades linear, about 7-9 x 1-2 mm, apex acute or obtuse, base oblique, glabrous on the upper surface, venation often looping backwards, crater-like glands on the upper surface at the apex of the compound leaf petiole and the base of secondary axes; petiole and rhachis pubescent; stipules persistent, linear-triangular, pubescent. Seed germination time 5 to 34 days.

Probably endemic to Queensland, occurs in CYP, NEQ and CEQ. Altitudinal range from sea level to 500 m. Grows in monsoon forest, drier or more seasonal rain forest and quite well developed rain forest on a variety of sites. May extend into New Guinea.

Produces a decorative general purpose timber.

Wood specific gravity 0.72. Cause et al. (1989).

Albizia toona F.M.Bailey, A Synopsis of the Queensland Flora, Supplement 1 : 18(1886), Type: Mackay, Bowen, Endeavour River, and other parts of Tropical Queensland. Lecto: Bowen, F. M. Bailey, BRI. Paraserianthes toona (F.M.Bailey) I.C.Nielsen, Bull. Mus. Natl. Hist. Nat., B, Adansonia 5: 356 (1983).