Marsdenia cymulosa Benth.
Bentham, G. (1868) Flora Australiensis 4: 338. Type: Queensland. Chin-Chin Creek, Bowman 319; holo:K; iso: BRI.MEL. Fide P. I. Forster (1996).
Leaf blades about 4.5-10 x 1.8-4.5 cm, petioles about 1.5-2.5 cm long. Colleters (small finger-like glands) about 2-6, present on the upper surface of the midrib close to its junction with the petiole. Twigs, leaves and petioles produce a clear or milky exudate. Lower surface of the leaf blades clothed in pale, crisped hairs, upper surface sparsely clothed. A small, rounded stipule-like gland present on either side of the base of each petiole. Veins 6-8 on each side of the midrib.
Inflorescence a panicle of umbels or condensed racemes. Flowers about 3-4 mm diam., corolla lobes erect. Sepals about 1-1.5 mm long, outer surface hairy, margins fimbriate. Corolla tube about 1 mm long, lobes about 2-3 mm long, outer surface of the corolla glabrous, inner surface with hairs present near the base of the lobes. Staminal column about 2 mm long. Anthers about 0.3 mm long. Pollen aggregated in pollinia about 0.2 x 0.25 mm. Style head glandular, about 1 mm long, forked at the apex, protruding well beyond the corolla tube. Ovaries 2, each about 0.5 mm long. Staminal corona a ruffled structure, each staminal lobe triangular, about 0.3 mm long and spreading.
Fruits about 65-100 x 7-9 mm, gradually tapering to a fine tip at the apex, calyx lobes persistent at the base. Seeds flat, obovate, about 5-12 x 3-4 mm, margins thickened, plumes white, not barbed, about 35 mm long. Cotyledons elliptic, about 3.5-6.5 x 3-3.5 mm. Radicle straight, about 1.5-3 mm long.
Cotyledons elliptic, about 16-20 x 9-11 mm. Hypocotyl hairy. First leaves elliptic, apex bluntly pointed to obtuse, base cuneate, lower surface clothed in short hairs, upper surface glabrous. At the tenth leaf stage: leaves decussate, leaf blade elliptic, apex acute, base cuneate. Lower surface of the leaf blade, petiole and stem densely clothed in short, arching, whitish hairs. Midrib +/- flush with the upper surface, lateral veins about 7-8 on each side. Colleters 2. Minute stipule-like glands about 0.5mm long present on the stem between the points of attachment of the petioles. Petioles produce a clear exudate. Lower stem surfaces fissured and somewhat corky. Seed germination time 17 to 18 days.