Macadamia tetraphylla—Queensland Nut, Rough-shelled Queensland Nut—PROTEACEAE

Macadamia tetraphylla

Link to Images on Flickr.

Habitat—Grows in subtropical rainforest in coastal areas

Distribution—North of the Clarence River, (chiefly in the Richmond and Tweed Valleys) in New South Wales, extending to North Queensland.

Description—Small to medium–sized tree to 15 m high; new growth reddish.

Local occurrences

Forster/Tuncurry Streets, Great Lakes College-Forster Campus, One Mile Beach and Royal Botanic Gardens Sydney.

Leaves.— Mostly in whorls of 4 or rarely in whorls of 3 or 5, margins toothed, lamina narrow–elliptic to oblanceolate, 18 to 25 cm long, 2 to 5 cm wide, apex ± acuminate, margins with regular stiff prickly teeth, leathery, glabrous, with 13 to 20 pairs of main lateral veins; petiole 0 to 3 mm long.

Macadamia tetraphylla
Macadamia tetraphylla

Inflorescence—Conflorescences axillary or ramiflorous, 10 to 25 cm long, densely pubescent. Perianth c. 10 mm long, creamy–pink to mauve

Flowering.—August to October

Fruit—20 to 35 mm diam., greyish green, turning brown; seed 15 to 30 mm long, ± pointed at the apex and tuberculate.

Ripe.—Late January.

Macadamia tetraphylla