Description: Shrubs, erect to prostrate; stems pubescent with laterally attached, ± 2-branched hairs, or glabrescent.
Leaves opposite, irregularly opposite or whorled, simple, margins entire or ± crenulate; upper surface reticulate, margins flat or recurved; stipules rigid, recurved or spreading.
Inflorescences terminal or axillary racemes; clusters or corymbs; bracts 3-lobed, often caducous; bracteoles often caducous. Calyx 5-toothed, teeth ± equal, the upper two broader and united higher up. Petals clawed, standard ± circular, emarginate, longer than wings and keel; wings oblong or obovate; keel straight or slightly curved, broad and obtuse. Stamens free; anthers uniform. Ovary stipitate; ovules usually 4–6 or 8; style filiform or thickened towards base; stigma small, terminal.
Pods ovoid or oblong, valves leathery; seeds without an aril.
Distribution and occurrence: World: 5 spp., endemic Aust., W.A., Qld, N.S.W., Vic.
Molecular systematic work has shown that three species previously included in Podolobium (P. scandens, P. procumbens and P. alpestre ) are more closely related to Callistachys, a genus previously considered endemic to W.A., but here expanded to include these three eastern Australian species.
Text by B. Wiecek, updated by R.L.Barrett, Aug. 2021
Taxa not yet included in identification key