Australian Tropical Rainforest Plants - Online edition

Miliusa traceyi Jessup

Shrub (woody or herbaceous, 1-6 m tall)
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Flower. © CSIRO
Flowers [not vouchered]. © G. Sankowsky
Fruit [not vouchered]. © G. Sankowsky
Flowering twig. © CSIRO
Scale bar 10mm. © CSIRO

Jessup, L.W. (1984) Austrobaileya 2(3): 522. Type: Qld, COOK DISTRICT: Massy Creek, 13 deg 55 S, 143 deg 33 E, 14 November 1980, Hyland 10927 (holo: BRI; iso: QRS).


Living bark strong and fibrous when stripped. Blaze layering inconspicuous. Narrow yellowish brittle stripes usually visible in the blaze. Dead bark layered.


Leaf blades about 4-10 x 2-5 cm. Petioles short. Very small oil dots just visible with a lens. Main lateral veins slightly raised on the upper surface, curving but not forming definite loops. Leaf blades pubescent on the underside. Oak grain in the twigs. Twig bark strong and fibrous when stripped. Buds clothed in pale brown prostrate hairs.


Sepals and outer petals similar, shed well before anthesis. Inner petals about 13-16 x 4-6 mm. Pedicels at flowering about 15-30 mm long. Stamens about 12. Ovaries about 11-12.


Fruiting carpels subglobular, about 9-15 x 10-14 mm, stalks about 5-7 mm long. Seeds 1 or 2 fruiting carpel. Embryo minute.


Features not available.

Distribution and Ecology

Endemic to Australia, occurs in NT, CYP and NEQ. Altitudinal range from sea level to 250 m. Grows in gallery forest and the drier, more seasonal rain forests.

Natural History & Notes

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

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