Australian Tropical Rainforest Plants - Online edition

Ristantia gouldii Peter G.Wilson & B.Hyland

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Leaves [not vouchered]. © G. Sankowsky
Young leaves [not vouchered]. © G. Sankowsky
Scale bar 10mm. © CSIRO
Cotyledon and 1st leaf stage, epigeal germination. © CSIRO
10th leaf stage. © CSIRO
Seedling, cotyledons still attached. © CSIRO

Wilson, Peter G. & Hyland, B.P.M. (1988) Telopea 3(2): 267. Type: QUEENSLAND: Timber Reserve 1230, Boonjee Logging Area, 17 deg25 S 145 deg 45 E, Hyland 6764, 18.7.1973; holo: QRS; iso: NSW, UNSW.


Narrow yellowish or pale brown stripes in the outer blaze.


Oil dots visible with a lens. Leaf blades about 5-9 x 2.5-5 cm. Lateral veins curved throughout their length but not forming distinct loops. Terminal buds clothed in very short, pale hairs. Bark on young leafy twigs often smooth and reddish but pale brown, slightly scaly and papery on older twigs. Young leaves reddish.


Inflorescences up to 4 cm long. Sepals +/- triangular, about 1.5 x 1.5-2 mm, pubescent on both surfaces. Petals obovate to orbicular, about 2 mm long. Stamens about 25-35, filaments about 1-2.5 mm long. Style about 2.5 mm long.


Fruit splitting almost completely to the base. Fruiting hypanthium scarcely developed, everted beneath the fruit. Fruit about 10-15 mm diam. Seeds ovoid or flattened-ovate, about 7-8 x 6-7 mm, testa +/- smooth.


Cotyledons bilobed, butterfly-shaped, about 12-15 x 19-25 mm. Oil dots reddish, easily seen with a lens. At the tenth leaf stage: leaf blade elliptic, apex acuminate, base cuneate, upper surface clothed in fine, almost prostrate, short hairs; oil dots small and numerous, reddish; petiole hairy. Seed germination time 16 days.

Distribution and Ecology

Endemic to NEQ, known only from the following localities: Timber Reserve 165, Pieter Botte Logging Area; Timber Reserve 1230, Boonjee Logging Area; State Forest Reserve 756, Velvin Logging Area. Altitudinal range from 450-800 m. Grows in well developed upland rain forest.

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