Click on images
Scale bar 10mm. Copyright CSIRO
Fruit, two views, cross section, dehiscing and chewed. Copyright W. T. Cooper
Inflorescence. Copyright Australian Plant Image Index (APII). Photographer: M. Fagg.
Leaves, fruit and seeds. Copyright CSIRO
10th leaf stage. Copyright CSIRO
Cotyledon stage, epigeal germination. Copyright CSIRO
Opisthiolepis heterophylla L.S.Sm.
Smith, L.S. (1952) Proc. Royal Society Queensland 62: 79. Type: QUEENSLAND. Cook District: ... Atherton, A.G.Hanson 21/1 (TYPE flowers), February 1950 ....
Oak, Blush Silky; Pink Silky Oak; Oak, Brown Silky; Drunk Rabbit; Blush Silky Oak; Oak, Pink Silky; Brown Silky Oak
Oak grain in the wood. Coppice stems generally present at the base.
Young leaves white on the underside but mature leaves brown. Oak grain in the twigs. Leaves usually simple on mature trees. Leaf blades about 2-23 x 2-9 cm. Petioles about 1.5-5 cm long, grooved on the upper surface. Petioles on young leaves shortly winged but as the wings are folded inwards they are inconspicuous and difficult to observe.
Flowers sessile, in pairs, without a common peduncle. Flower bracts pubescent, wider than long, about 0.7 x 1.3 mm. Tepals glabrous, curved, about 2.5-5 mm long. Hypogynous gland one, bilobed. Ovary glabrous, shortly stalked. Ovules about 8.
Cotyledons oblong to oblong-obovate, about 40-50 mm long. First few leaves +/- elliptic, apex acuminate, base attenuate, margins serrate on the upper half of the leaf blade. At the tenth leaf stage: leaf blade +/- elliptic, apex acuminate, base attenuate; margin serrate, teeth about 5-7 on each side on the upper half of the leaf blade; upper surface with reddish brown hairs along the midrib, undersurface densely hairy with prostrate, brown hairs. Lobed or compound leaves not usually present until 12th leaf or later.
Distribution and Ecology
Endemic to NEQ, widespread in the area. Altitudinal range from near sea level to 1150 m. Grows in well developed rain forest on a variety of sites but is probably more common in upland and mountain rain forests and probably reaches its best development on soils derived from basalt.
Seeds eaten by Sulphur Crested Cockatoos. Cooper & Cooper (1994).
Produces quite a decorative general purpose timber with an oak grain.
Wood specific gravity 0.61 Cause et al. (1989).