Pleiogynium timorense—Burdekin Plum, Sweet Plum; Tulip Plum—ANACARDIACEAE

Pleiogynium timorense

Link to Images on Flickr.

Habitat—Grows in Littoral, Dry and Subtropical Riverine rainforest and monsoon forest.

Distribution— North from Gympie area in Queensland; a widespread species in Cape York Penninsula, North East Queensland and southwards to south-eastern Queensland. Altitudinal range from near sea level to 1000 m. Also found in Malaysia and the Pacific islands.

Description—Large tree usually with large plank buttresses.

Local occurrences

Raintrees Diamond Beach, Royal Botanic Gardens Sydney and The North Coast Regional Botanic Gardends Coffs Harbour.

Leaves.— Compound, alternate, leaf blades about 4 to 10 x 2 to 6 cm. Stalk of the terminal leaflet significantly longer than those of the lateral leaflets. Midrib raised on the upper surface. Pale, slightly elongated lenticels usually obvious on the leaf-bearing twigs. Domatia, if present, are foveoles, usually with hairs at the opening. Colourless sap exuding from cut petioles.

Pleiogynium timorense
Pleiogynium timorense

Inflorescence.— Calyx lobes about 0.6 to 1 mm long. Petals ovate, about 1.7 to 3.8 mm long. Stamens usually eight or ten, rarely 12 and inserted below and outside the disk. Filaments about 1.3 to 2.3 mm long. Styles and stigmas ten in the female flowers, styles about 1 mm long.

Flowering.— Spring

Fruit.— Depressed–obovoid, about 20 to 25 x 20 to 38 mm. Endocarp hard and woody, about 1.8 to 2.5 x 2 to 3.5 mm. Seeds about 5 to 12 per fruit. Cotyledons 3–veined. The hard stony remains of the fruit normally persist beneath mature female trees. Each fruit or seed kernel resembling a flying saucer with portholes around the equator.

Ripe.—Summer

Pleiogynium timorense