Australian Tropical Rainforest Plants - Online edition

Synoum glandulosum subsp. paniculosum (F.Muell.) Mabb.

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Dehiscing fruits. © A. Ford & F. Goulter
Dehiscing fruit. © A. Ford & F. Goulter
Scale bar 10mm. © CSIRO
10th leaf stage. © CSIRO
Cotyledon stage, epigeal germination. © CSIRO

Mabberley, D.J. (1998) Telopea 8(1): 48.

Common name

Northern Scentless Rosewood; Northern Rosewood; Scentless Rosewood


Bark reddish brown, conspicuously tessellated on larger trees.


Leaflet blades about 5-12 x 2.5-5 cm. Domatia are conspicuous tufts of hairs. Leaflet stalks channelled on the upper surface. Stalk of the terminal leaflet generally longer than those of the lateral leaflets.


Inflorescence about 5-20 cm long. Calyx lobes +/- deltoid, about 0.5 mm long. Petals +/- lanceolate, about 5-5.5 mm long. Stamens usually ten, fused to form a staminal tube about 3.5-4.5 mm long, shallowly lobed at the apex, anthers sessile. Disk attached to the lower part of the ovary, ovary pubescent, about 1.5-2 x 2.5 mm, style pubescent, about 2-2.5 mm long, stigma terminal, +/- peltate.


Fruits glabrous externally and internally, usually 2-lobed, about 15-20 mm long. Seeds about 12-13 x 7-8 mm. Aril partly enclosing the seed. Cotyledons green, folded lengthways.


Cotyledons fleshy, reniform, about 10-15 mm wide, apex rounded, base cordate, venation obscure, about 3-5 veins radiating from petiole. At the tenth leaf stage: leaflet blades elliptic or obovate, leaflets increasing in size from the base to the apex of the compound leaf, upper surface glabrous or with a few hairs along midrib; domatia (tufts of hair) sometimes present on the underside. Petioles and stem densely clothed in hairs. Seed germination time 7 to 96 days.

Distribution and Ecology

Endemic to Queensland, occurs in NEQ and CEQ. Altitudinal range from 700-1300 m. Grows in well developed upland and mountain rain forest.

Natural History & Notes

Produces a useful and decorative cabinet timber.

Wood specific gravity 0.62. Cause et al. (1989).

Synoum glandulosum var. paniculosum F.Muell., Fragmenta Phytographiae Australiae 5: 145(1865), Type: ad Rockinghams Bay. Synoum muelleri C.DC., Monographiae Phanerogamarum 1 : 593(1878), Type: In Nova Hollandia ad Rockingham Bay (Ferd. Muell. in h. Berol.).
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