Commemorating J.C.M. Radermacher (1757–83), Dutch resident in Java who published a list of Javanese plants.
Trees with branches that have prominent lenticels. Leaves opposite, divided 2-3 times. Flower clusters terminal. Flowers clusters mostly terminal. Corolla funnel-shaped to more or less tubular, slightly 2-lipped. Stamens 4-5. Fruit capsule linear, 2-valved and generally spirally twisted; seeds winged at each end.
Grown in cooler districts, mostly as a formal indoor container plant with finely divided glossy leaves, but in warmer districts for the showy trumpet flowers.
Seed, cuttings or air layers.
Locally used for their timber.
Small evergreen trees with bipinnate shiny leaves.
15 species from Malesia and SE Asia.
van Steenis (1976).
Source: (2002). Bignoniaceae. In: . 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.