Commemorating William Marsden (1754–1836), Irish-born orientalist and numismatist, Secretary to the Admiralty; collector of plants in Sumatra.

Perennial subshrubs or vines with clear or white latex. Leaves herbaceous; mucilage glands present. Corolla wheel-, bell-, salver- or urn-shaped; tube short to cylindrical or urn-shaped; lobes free at tips, imbricate or valvate. Annular corona absent; corolline corona present or absent; staminal corona absent or of 5 discrete lobes adnate to base of staminal column; interstaminal corona absent. Follicles tapered at each end to ovoid; seeds with hair tufts at one end.

This genus is well known for M. floribunda (Stephanotis), which is widely cultivated in Australia.

Seed.

Leaves herbaceous and glossy; corolla salver-shaped, with tube more than 2 cm long.

Over 250 pantropical species. Australia has 34 species.

Forster (1990, 1995).

Source: Forster, P.; Liddle, D.; Liddle, I. (2002). Hoya. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.