Rounded tree to 15 m or more tall with a buttressed trunk and deeply fissured bark. Leaves compound with a terminal leaflet and 4-9 pairs of long-pointed lateral leaflets, each to about 12 cm long. Flowers in terminal clusters with brownish hairy stems. Calyx spathe-like, split, bent back. Corolla to about 12 cm long, blood red, bell-shaped and abruptly narrowed at the base, lobes about 3 cm long, crisped. Stamens sometimes slightly protruding. Fruit capsule woody, oblong, to about 20 cm long and containing papery-winged seeds.
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.