Marsdenia suaveolens

Marsdenia suaveolens, commonly known as the scented milk vine, is a small vine found in New South Wales, Australia. It is found in a variety of habitats in relatively high rainfall areas, from Bega to Port Macquarie. The original specimen was collected at Sydney on 11 May 1802.
Taxonomy.
The species name "suaveolens" is from Latin, and it refers to the uniquely sweet scented flowers. In 1810, this species first appeared in scientific literature, in the "Prodromus Florae Novae Hollandiae", authored by the prolific Scottish botanist, Robert Brown. Kurt Sprengel placed it in the genus "Pergularia" in 1824.
Description.
"Marsdenia suaveolens" grows as a vine in forest or small upright shrub in heathland, reaching 1 m (3 ft) high. The stem is up to in diameter, and the internodes are up to . The plant exudes a white milky sap when cut or damaged. The (oppositely arranged) leaves arise in pairs off the stem. The dark green, spear-shaped (lanceolate to oblong-lanceolate) leaves have rounded bases and measure long by wide. The leaf margins roll downwards. The cream-white flowers appear from October to February, being most abundant in December, and are across and long. They are arranged in umbels. The peduncles are long. Fruiting takes place 2–3 months after flowering. The seed pods are narrow with a tapered tip, and are cm long by wide. They open to release the feathery seeds from August to January. The seeds are then blown away by the wind.
Distribution and habitat.
The species ranges from Port Macquarie to Bega in eastern New South Wales. It grows in wet sclerophyll forest in association with such species as turpentine ("Syncarpia glomulifera"), Sydney peppermint ("Eucalyptus piperita") and blackbutt ("E. pilularis"), generally on sandy alluvial soils. It is also found in dry sclerophyll forest with red bloodwood ("Corymbia gummifera"), stiff-leaf wattle ("Acacia obtusifolia") and paperbark tea-tree ("Leptospermum trinervium"), and can be found in rainforest gullies. The yearly rainfall is over 800 mm.
Ecology.
"Marsdenia suaveolens" resprouts after bushfire, and has been recorded setting fruit five months after a burn.
"Marsdenia suaveolens" is foraged upon by caterpillars of the common crow ("Euploea core")
Cultivation.
In 1820, "The Botanical Register" reported that "Marsdenia suaveolens" flowered in the United Kingdom in Colville Nursery in Chelsea. The flower's fragrance was greatly praised and compared to that of "Heliotropium peruvianum" (now "Heliotropium arborescens"). It can be grown in well-drained soil in a spot with some shelter in the garden.