Australian Tropical Rainforest Plants - Online edition

Dalbergia ferruginea Roxb.

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Leaves and Flowers. © CSIRO
Scale bar 10mm. © CSIRO
10th leaf stage. © CSIRO
Cotyledon stage, epigeal germination. © CSIRO
Vine stem bark and vine stem transverse section. © CSIRO

Prain, D. (1904) Annals of the Royal Botanic Garden, Calcutta 10(1): 73, Type: Roxburgh 276/2584 (BR, BR511085), Malay Island.


Vine stem diameters to 16 cm recorded. Stem laterally flattened and fluted. Blaze darkens markedly on exposure. Young stems smooth and blackish.


Compound leaves usually consist of 10-20 leaflets. Leaflet blades about 15-45 x 5-25 mm, lateral leaflet stalks about 1-2 mm long. Pulvinus present only on the terminal leaflet. Stipules about 1.5-2 mm long, hairy. Tendrils are modified branches.


Bracteoles oblong. Calyx about 2 mm long, outer surface clothed in short prostrate hairs. Petals glabrous, about 4-5 mm long. Staminal filaments glabrous, fused together to form two bundles each of five filaments, one bundle on each side of the ovary. Ovary clothed in hairs. Style glabrous.


Fruits with seed prominent in pod, about 4-5 x 2-3 cm, +/- obliquely ovate, obovate to elliptic in outline, wing-like. Seeds 1-2, +/- centrally located.


Cotyledons oblong, about 6-8 x 3-4 mm, base sagittate. First pair of leaves compound, each leaf with about 7-10 shortly stalked leaflets. At the tenth leaf stage: leaves compound with about 18-20 leaflets. Leaflet blades ovate-elliptic, about 12-20 x 7-9 mm, shortly stalked, apex obtuse or emarginate, base obtuse, abruptly narrowed into the stalk. Stipules oblong, about 2 x 0.5 mm, caducous. Seed germination time 13 days.

Distribution and Ecology

Occurs in CYP and NEQ. Altitudinal range from near sea level to 100 m. Grows in well developed gallery rain forest. May also occur in New Guinea.

Natural History & Notes

The name Dalbergia densa var. australis Prain has previously been misapplied to this taxon.

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