Australian Tropical Rainforest Plants - Online edition

Dysoxylum latifolium Benth.


Tree
Click/tap on images to enlarge
Flower [not vouchered]. CC-BY J.L. Dowe
Fruit. © CSIRO
Fruit, side view, dehisced and arillous seed. © W. T. Cooper
Dehisced fruit. © W. T. Cooper
Scale bar 10mm. © CSIRO
Cotyledon stage, semi-hypogeal, hypogeal germination. © CSIRO
10th leaf stage. © CSIRO
Family

Bentham, G. (1863) Flora Australiensis 1: 381. Type: Queensland. Frankland Island. McGillivray.

Stem

Blaze odour resembling guava (Psidium guajava) fruits.

Leaves

Leaflet blades about 8-15 x 5-9 cm, +/- symmetrical or only slightly oblique at the base. Sinuous canals or translucent fibres visible with a lens in the body of the leaflet blades. Terminal buds clothed in pale brown +/- prostrate hairs. Compound leaf rhachis ridged on the upper surface.

Flowers

Calyx cup-shaped, lobes acute. Outer surface of the corolla clothed in pale hairs. Petals about 5-6 mm long. Stamens eight. Disk resembling a staminal tube. Ovary pubescent.

Fruit

Fruits +/- globular, 3-lobed in transverse section, about 30-40 mm long, outer surface glabrous. Sarcotesta orange-red, completely enclosing the seed except for the hilum.

Seedlings

Cotyledons held so that their long axes are at straight angles to the stem. First pair of leaves compound with three to five leaflets and the compound leaf axis extending beyond the point of attachment of the most distal leaflet. At the tenth leaf stage: leaflet blades elliptic, apex acuminate, base cuneate, +/- glabrous, sinuous canals or translucent fibres visible with a lens in the body of the leaflet blade; the petiole and the compound leaf rhachis clothed in short, pale brown, erect hairs. Terminal bud clothed in pale brown prostrate hairs. Seed germination time 40 days.

Distribution and Ecology

Occurs in WA, NT, CYP and NEQ. Altitudinal range from sea level to 250 m. Grows as an understory tree in monsoon forest and drier, more seasonal rain forest often in rocky situations close to the sea. Also occurs in New Guinea and the Solomon Islands.

Synonyms
Alliaria latifolia (Benth.) Kuntze, Revisio Generum Plantarum 1: 109(1891).
RFK Code
905
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