Australian Tropical Rainforest Plants - Online edition

Aceratium sericoleopsis Balgooy

Shrub (woody or herbaceous, 1-6 m tall)
Click/tap on images to enlarge
Leaves and Flowers. © W. T. Cooper
Fruit two views and cross section. © W. T. Cooper
Scale bar 10mm. © CSIRO
10th leaf stage. © CSIRO
Cotyledon stage, epigeal germination. © CSIRO

Balgooy, M.M.J. van (1964) Blumea 12: 72. Type: C.T.White s.n. in BRI. .. Boonjie, Atherton Tablelands, C.T.White s.n. (Type: BRI).

Common name

Silky Aceratium


Often a multistemmed poorly formed tree. Numerous coppice shoots usually present at the base, prop roots often also present. Stem seldom exceeding 30 cm dbh.


Leaf blades about 3-7.5 x 0.5-2.5 cm. Petioles short, about 0.2-0.4 cm long. Terminal buds and young shoots densely clothed in long, brown, prostrate, silky hairs. Fine veins +/- parallel with the main lateral veins.


Sepals ovate-lanceolate, about 9-12 x 2-2.5 mm. Petals narrowly oblong-ovate, about 11-15 x 2.5-3 mm, tridentate at the apex. Stamens about 12-15, filaments strongly sigmoid, about 4-6 mm long, laxly hispidulous throughout, anthers about 2.8-3.3 x 0.4-0.5 mm, minutely hispidulous throughout but with setae at the apex. Disk glabrous, about 1-1.2 mm high. Ovary ellipsoid, about 2 x 1.5 mm, glabrous, ovules 6 per locule. Style subulate about 7-12 mm long, glabrous.


Base of the fruit recessed so that the pedicel is inserted in a depression at the base. Fruits ellipsoid, about 18-30 x 10-19 mm, endocarp about 12 x 6 mm.


Cotyledon veins five, parallel. At the tenth leaf stage: upper leaf surface clothed in erect pale brown hairs. Seed germination time 278 days.

Distribution and Ecology

Endemic to NEQ, restricted to the Atherton Tableland with most collections coming from the Boonjee area. Altitudinal range from 600-750 m. Grows in well developed rain forest, usually on basalt.

RFK Code
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