Australian Tropical Rainforest Plants - Online edition

Parsonsia langiana F.Muell.

Slender Vine
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Flowers. © CSIRO
Leaves and Flowers. © CSIRO
Fruit. CC-BY J.L. Dowe
Scale bar 10mm. © CSIRO

Mueller, F.J.H. von (1868) Fragmenta Phytographiae Australiae 6: 128. Type: Queensland, Rockingham Bay, J. Dallachy; holo: MEL; iso: BRI.


A slender vine not exceeding a stem diameter of 2 cm.


Leaf blades about 6-12 x 3-7.5 cm, petioles about 1-2.5 cm long. Twigs, petioles, upper and lower leaf blade surfaces clothed in pale brown hairs. Glands (about 0.5 mm long) resembling stipules present on the twigs between the points of attachment of pairs of leaves.


Inflorescence hairy, an open panicle up to 11.5 cm long. Flowers about 3-6 mm diam. Calyx lobes about 1 mm long clothed in pale brown hairs. Corolla outer surface clothed in rust-coloured hairs. Corolla tube about 2 mm long, lobes about 2 mm long. Anthers about 2 mm long, filaments hairy, about 1 mm long. Anthers fused to form a cone surrounding the style and stigma. Nectary (disk) glands 5, surrounding the ovary. Carpels about 1 mm long. Style + stigma about 2 mm long.


Fruits about 16-17 cm long clothed in short, brown, prostrate hairs. Seeds numerous, each about 10-14 mm long. Plumes about 12-30 mm long. Embryo about 8 mm long. Cotyledons about 4.5 mm long. Radicle about 3.5 mm long.


Features not available.

Distribution and Ecology

Endemic to NEQ. Altitudinal range from near sea level to 1250 m. Grows in well developed rain forest areas on a variety of rock types.

Lyonsia langiana (F.Muell.) Benth., Flora Australiensis 4: 322(1868).
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