Hoya carnosa (Thick-leaved).—Foliage large, flowers in large drooping corymbs; they are of a pinkish-white colour, and contain, or rather yield, drops of pure sweet honey; hence this fine old plant is known as the Honey plant.
1855 June 5, T. Appleby, “Plants for Baskets”, in George W. Johnson, Robert Hogg, editors, The Cottage Gardener, and Country Gentleman’s Companion: A Journal of Horticulture, Rural and Domestic Economy, Botany, and Natural History, volume XIV, number CCCXLIX, London: Published for the proprietors, […], page 161, column 2