Shrub to about 50 cm tall. Leaves more or less lanceolate, short-stalked. Flowers about 2.5 cm long, in dense spikes, purple, the lower lip with a pale yellow beard of hair.
Source: (2002). Scrophulariaceae. 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.