Australian Tropical Rainforest Plants - Online edition

Gossia sp. Green Bark (B.Hyland 25370RFK)

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Scale bar 10mm. © CSIRO
10th leaf stage. © CSIRO
Cotyledon stage, epigeal germination. © CSIRO

Provisional HISPID phrase name.

Common name



A small tree not exceeding 30 cm dbh. Bark smooth, +/- green.


Oil dots closely spaced. Midrib raised or +/- flush with the upper surface. Crushed leaves have a strong oily smell. Leaf blades about 6.5-8.5 x 2.5-4 cm.


Petals and calyx lobes pubescent adaxially. Petals about 3 mm long with about 40 oil dots per petal. Petal oil dots yellowish.


Fruits globular or depressed globular, about 7-8 mm diam., calyx lobes persistent at the apex. Testa membranous. Embryo coiled and/or twisted with the cotyledons +/- in the middle of the spiral. Cotyledons much more slender than the radicle.


Cotyledons linear, about 5-7 x 1-2 mm, venation not obvious; stipules present. A few oil dots visible about the margin. Stem below cotyledons (hypocotyl) thickened. First pair of leaves about 17 x 9 mm, petioles about 1 mm long. At the tenth leaf stage: leaf blade ovate, apex acute and mucronate, base cuneate. Leaf blade about 17 x 8 mm, petiole about 1 mm long. Oil dots numerous. Seed germination time 12 to 22 days.

Distribution and Ecology

Probably endemic to NEQ. Altitudinal range from 350-950 m. Grows as an understory tree in rain forest, particularly drier, more seasonal rain forest often associated with Kauri Pine (Agathis robusta).

Natural History & Notes

This taxon has been included in Gossia bidwillii by Snow et al (2003). The two taxa are very similar but the stems look very different and there are differences in the seedling leaves particularly the intramarginal vein. The two taxa are here retained as separate until further studies are complete.

RFK Code
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