Shrub to several metres tall, dense. Leaflets 5-13, each to 10 cm long, margin toothed. Flowers bright yellow, to 5 cm long; summer. Corolla more or less funnelshaped, abruptly constricted at the base. Fruit capsule about 20 cm long. [Stenolobium stans (L.) Seem.]
USA and Mexico to N Venezuela and Argentina
Occasionally naturalised in coastal districts north of Sydney.
Sometimes used as a screening plant with large, attractive, yellow, faintly scented flowers.
Grows best in warm climates but will survive in Melbourne.
Locally as a diuretic.
var. velutina DC. has leaflets that are softly hairy below.
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.