Click on images
Leaves and Flowers. Copyright CSIRO
Cotyledon stage, epigeal germination. Copyright CSIRO
Flowers and buds. Copyright CSIRO
10th leaf stage. Copyright CSIRO
Vine stem bark and vine stem transverse section. Copyright CSIRO
Fruit, several views and seed. Copyright W. T. Cooper
Scale bar 10mm. Copyright CSIRO
Caelospermum paniculatum var. paniculatum
Caelospermum paniculatum F.Muell. var. paniculatum
Leenhouts, P.W. (1988) Blumea 33: 285. Type: ?.
Caelospermum paniculatum F.Muell., Fragmenta Phytographiae Australiae 5: 19(1865), Type: Queensland, Rockingham Bay, Oct. 1864, J. Dallachy; lecto: MEL. Fide Johansson (1988). Morinda salomonensis Engl., Botanische Jahrbucher 7: 478(1886), Type: Ins. Salomonis, Bougainville (26.8.75).
Vine stem diameters to 10 cm recorded. Living bark layer quite thick. Numerous hard, brown or orange-brown granular fibres or lines visible in the blaze.
Stipules about 2-3 mm long overall, fused at the base, sheathing the twigs. Leaf blade about 7-17 x 2.5-8 cm, petioles about 1.2-2.5 cm long. Domatia are crater-like foveoles, often, but not always with a small orifice.
Flowers about 11-12 mm diam. Hypanthium about 3 mm long. Calyx tube cupular, about 1.5 mm long, calyx lobes absent. Corolla tube about 4.5-7 mm long, densely clothed with hairs on the inner surface. Corolla lobes about 5-5.5 mm long. Staminal filaments about 2-3 mm long, attached to the upper half of the corolla tube. Anthers about 3 mm long. Pollen orange. Style about 3-5 mm long, apex bifid.
Fruits variable in size and shape, globular to variously lobed, usually more than 10 mm long and up to 13-18 mm diam. Surface of the fruits usually marked by one or more circular scars from the original individual flowers. Pyrenes +/- kidney-shaped, quite hard and difficult to cut, each pyrene about 7 mm long. Seeds about 5-6 x 3 mm, one per pyrene. Embryo about 2-4 mm long. Radicle about as long as the cotyledons but not as wide. Radicle broadest towards the base.
Cotyledons ovate, about 17-24 x 8-12 mm. At the tenth leaf stage: leaf blade about 15 x 4 cm. A few small foveoles with a narrow slit-like orifice visible on the underside. 'Oil dots' elongated. Stipules forming a sheath around the stem and abruptly narrowed to a point at the apex.
Distribution and Ecology
Endemic to Australia, occurs in CYP, NEQ and southwards as far as north-eastern New South Wales. Altitudinal range in CYP and NEQ from near sea level to 800 m. Grows in gallery forest, lowland and upland rain forest.