Semecarpus australiensis Engl.
Engler, H.G.A. in Candolle, A.L.P.P. de & Candolle, A.C.P. de (1883) Monographiae Phanerogamarum 4 : 482. Type: Australia: Cape York (Hill in herb. Kew); Albany Island, Port Essington (Armstrong in herb. Kew); Rockinghams Bay (herb. Berol.).
Tartree; Plum, Cedar; Native Cashew; Markingnut Tree; Marking Nut; Cashew, Native; Cedar Plum
Leaf blades about 10-30 x 4-12 cm, much paler on the underside. Blade margins thickened, resembling veins.
Inflorescence many flowered, usually longer than the leaves, male flowers sessile, female flowers on pedicels to 1 mm long. Calyx lobes triangular, 0.5-0.7 mm long. Petals ovate, about 1.5 mm long in male flowers, but about 3.5-4 mm long in female flowers. Anthers about 0.8 mm long, filaments about 2 mm long. Disk pubescent. Ovary pubescent.
One to three cataphylls usually present before the leaves. First pair of true leaves elliptic-obovate, about 7-10 x 3.5-4.5 cm, apex acuminate, much paler on the underside. At the tenth leaf stage: leaves obovate, apex acuminate, base cuneate, upper surface glabrous, undersurface glaucous; petiole with a few pale scattered hairs. Seed germination time 13 to 35 days.
This is a dangerous species and should be treated with caution. Contact with this species causes severe allergic reactions with a large percentage of people. Occasionally used in the past to produce sawn timber.
Fruit eaten by Cassowaries and Musky Rat-kangaroos. Cooper & Cooper (1994).