Cynanchum viminale subsp. brunonianum—Caustic Vine, Snake Vine—APOCYNACEAE

Cynanchum viminale subsp. brunonianum

Link to Images on Flickr.

Habitat— In Dry and Littoral Rainforest, Vine Thickets and on cliffs near sea. Mainly a Coastal Species but occurs in the Gunnedah district and west to Palmgrove National Park in the Taroom district.

Distribution— North from the Booti Booti National Park near Forster in New South Wales and into Queensland. Also occurs in Western Australia, Northern Territory, New Caledonian, India, China and Africa.

Description— Much–branched succulent woody climber with stems twining and commonly to 6 m long, or a trailer on coastal headlands; stems usually twining, bright green to grey, glabrous.

Local occurrences

Burgess Road Forster, Headland Complex, Rock and The Cape Hawke Complex

Leaves.—Mostly Absent, milky latex present, occasionally with scale–like opposite leaves.

Cynanchum viminale subsp. brunonianum
Cynanchum viminale subsp. brunonianum

Inflorescence.— Flower bearing stems 2 to 4 mm diam. Umbels 2 to 10–flowered;pedicels 3 to 6 mm long. Flowers 6 to 8mm diam., pale yellow or whitish. Calyx lobes obtuse, 1 to 1.5mm long. Corolla tube 1 to 2 mm long; lobes ovate–oblong, subacute, 4 to 5 mm long.

Flowering.— Spring to Autumn.

Fruit.—Follicles slender, gradually tapered to apex, 5 to 14 cm long.

Ripe.—Autumn

Cynanchum viminale subsp. brunonianum