Australian Tropical Rainforest Plants - Online edition

Meiogyne heteropetala (F.Muell.) D.C.Thomas, Chaowasku & R.M.K.Saunders

Shrub (woody or herbaceous, 1-6 m tall)
Click/tap on images to enlarge
Flower. CC-BY ATH
Dissected flower. CC-BY J.L. Dowe
Leaves and fruit. CC-BY ATH
Leaves. CC-BY ATH
Scale bar 10mm. © CSIRO
10th leaf stage. © CSIRO

Xue, B., Thomas, D.C., Chaowasku, T., Johnson, D.M. & Saunders, R.M.K. (2014) Systematic Botany 39(2): 401.

Common name

Orange Annona


Usually grows into a small tree, not exceeding 30 cm dbh, but usually flowers and fruits as a shrub.


Leaf blades about 4.5-12 x 2-7.5 cm. Oil dots visible with a lens. Petioles very short. Younger twigs hairy. Twig bark fibrous when stripped. Oak grain in the twigs.


Flowers dark maroon to almost black. Sepals triangular, about 5-6 x 3 mm. Petals densely clothed in prostrate hairs. Outer petals about 25-40 mm long. Inner petals about 6-8 mm long. Inner surface of petals dotted with purple glands. Anthers brown, filaments pink. Ovaries 1-5, clothed in simple hairs.


Fruiting carpels +/- sessile, about 20-25 x 10-15 mm, densely clothed in simple erect hairs. Seeds about 7 x 5 mm, usually about four per carpel. Embryo minute.


First pair of leaves alternate, simple and ovate. Oil dots visible with a lens. At the tenth leaf stage: leaves elliptic to ovate with a few pale hairs on the upper surface along the midrib; oil dots very small, just visible with a lens. Seed germination time 64 days.

Distribution and Ecology

Endemic to Queensland, occurs in NEQ, CEQ and southwards towards south eastern Queensland. Altitudinal range from near sea level to 100 m. Grows in drier lowland rain forest and monsoon forest.

Natural History & Notes

Food plant for the larval stages of the Green Spotted Triangle and the Pale Green Triangle Butterflies. Sankowsky & Neilsen (2000).


Fitzalania heteropetala (F.Muell.) F.Muell.Fragmenta Phytographiae Australiae 4: 34 (1864). Uvaria heteropetala F.Muell., Fragmenta Phytographiae Australiae 3: 1(1862), Type: In insulis Cumberland Islands. Eug. Fitzalan. Saccopetalum bidwillii Benth., Flora Australiensis 1: 53(1863), Type: Queensland. Wide Bay, Bidwill.

RFK Code
Copyright © CSIRO 2020, all rights reserved.