Rockinghamia angustifolia (Benth.) Airy Shaw

Euphorbiaceae

Airy Shaw, H.K. (1967) Kew Bulletin 20: 29.

Kamala; Mountain Kamala; Rockinghamia

Seldom exceeding 45 cm dbh. Trunk often slightly fluted near the butt.

Leaf blades about 11-19 x 4-5-7.5 cm, clustered towards the end of the twigs in groups of 3-6, with sections of twigs completely devoid of leaves and not showing any leaf scars. Midrib and lateral veins raised on the upper surface.

Inflorescences up to 14 cm long. Male flowers: Flowers perianth about 2 mm long, stamens about 40-50, filaments about 1-2 mm long, inserted in the hairy and glandular disk. F Female flowers: Flowers perianth about 3-4 mm long, ovary about 2 mm diam., densely hairy. Styles about 2 mm long.

Capsules usually 3-lobed, about 12-15 mm long, densely tuberculate-muricate. Seeds subglobose, about 7-8 x 6-7 mm.

Cotyledons +/- obovate, about 10-12 mm long, with three or more veins radiating from the base. At the tenth leaf stage: leaf blade narrowly elliptic or ovoid, margin crenate, midrib raised on the upper surface; oil dots visible with a lens; stipules small and hairy. Seed germination time 17 to 21 days.

Endemic to Queensland, widespread in NEQ and CEQ. Altitudinal range from near sea level to 1400 m. Grows as an understory tree in well developed rain forest on a variety of sites.

Seeds eaten by King Parrots. Cooper & Cooper (1994).

Mallotus angustifolius Benth., Flora Australiensis 6: 141(1873), Type: Queensland. Rockingham Bay, Dallachy.