Australian Tropical Rainforest Plants - Online edition

Macaranga subdentata Benth.

Shrub (woody or herbaceous, 1-6 m tall)
Click/tap on images to enlarge
Male flower [not vouchered]. CC-BY J.L. Dowe
Female flower [not vouchered]. CC-BY J.L. Dowe
Leaves and male inflorescences. © C. Williams
Leaves and fruit. © C. Williams
Leaves and fruit. © C. Williams
Scale bar 10mm. © CSIRO
Cotyledon stage, epigeal germination. © CSIRO
10th leaf stage. © CSIRO

Bentham, G. (1873) Flora Australiensis 6: 145. Type: Queensland. Rockingham Bay, Dallachy.

Common name

Needle Bark


Creamy-yellow, hard, brittle, needle-like structures in the blaze. These structures (apparently more durable than the rest of the bark tissues) tend to persist on the surface of the dead bark.


Two or more reddish brown flat glands normally visible on the upper surface of the leaf blade at the base near its junction with the petiole. Leaf blades about 12-21 x 3-5.5 cm, underside covered with numerous small silvery scales.


Large floral bracts absent. Flowers about 2-3 mm diam. Outer surface of the tepals lepidote scaly, but lacking any glands. Ovary ferruginously hairy, also clothed in scales, glands and trichomes.


Capsules muricate and densely yellowish lepidote. Seeds globular, about 3-4 mm diam.


Cotyledons orbicular, about 20 mm diam., hairy on the upper surface. A few scattered small oil dots just visible with a lens. At the tenth leaf stage: leaves elliptic, apex acuminate, base auriculate, margin dentate, upper surface hairy, undersurface with numerous small reddish brown scales, visible only with a lens. Seed germination time 19 days.

Distribution and Ecology

Endemic to Queensland, occurs in CYP and NEQ. Altitudinal range from near sea level to 1100 m. Grows as an understory tree in well developed rain forest on a variety of sites.

RFK Code
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