Much-branched shrub to about 0.5 m tall. Leaves to about 2 cm long, more or less oblong to obovate. Flowers in pendulous axillary clusters. Flower tube scarlet with yellow lobes.[Jacobinia pauciflora (Nees) Griseb.]
J. ×penrhoziensis (Carr.) L.H. Bailey is a European-raised hybrid between J. rizzinii and J. ghiesbreghtiana and is occasionally listed in Australia; it differs clearly in having distinctive longer, narrower leaves and longer flowers.
Source: (2002). Acanthaceae. 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. (as Justicia rizzinii)