Australian Tropical Rainforest Plants - Online edition

 Camonea pilosa (Houtt.) A.R.Simoes & Staples

Slender Vine
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Simoes, A.R. & Staples, G.W. (2017) Botanical Journal of the Linnean Society 183: 561-586.

Common name



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


Leaf blades about 6.5-9.5 x 4-4.5 cm, petioles about 1.5-2.5 cm long. Petioles and leaf bearing twigs densely clothed in erect white hairs. Upper and lower surfaces of the leaf blade densely clothed in hairs.


Flowers borne in tight umbel-like cymes. Flowers about 20 mm diam. Sepals about 7 mm long, apex emarginate with a tooth or mucro in the notch. Corolla funnel-shaped, about 25-30 mm long. Stamens not exceeding the corolla tube. Staminal filaments about 4-5 mm long, hairy towards the base. Anthers about 2 mm long. Disk sinuate. Style about 12-15 mm long. Stigma bilobed, surface papillose. Ovules 2 per locule.


Capsules 4-valved, about 11-12 x 8 mm, sepals persistent at the base. Seeds angular, about 4-5 mm long. Testa clothed in comparatively long dark brown hairs. Cotyledons emarginate at the apex.


Features not available.

Distribution and Ecology

Occurs in WA, NT, CYP and NEQ. Altitudinal range from near sea level to 100 m. Often found in open forest sometimes in or on the edges of rain forest and gallery forest. Also occurs in Asia and Malesia.

Natural History & Notes

A second taxon is present in NT and CYP, now called Camonea umbellata, native to Africa and introduced to Australia. It was previously named Merremia umbellata subsp. umbellata. Camonea umbellata in the broad sense (including Camonea pilosa) is the subject of further taxonomic study.


Ipomoea pilosa Houtt., Natuurlijke Historie II vii: 573, t. 42, fig. 2 (1777), Type: Country and collector unknown (holotype G).  Merremia umbellata (L.) Hallier f. var. orientalis Hallier f., Versl. 'sLands Pl.-tuin 1895 : 132 (1896). Merremia umbellata subsp. orientalis (Hallier f.) Ooststr., Flora Malesiana ser. I 4: 449 (1951).

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