Rigid annual 3–35 cm high; stem erect, simple or with decumbent branches at the basal (rarely higher) nodes, white-eglandular-villous. Leaves discolorous, serrate to shallowly undulate, sparsely villous at least near base and on midrib below; lower leaves opposite, ovate to ovate-elliptic, 5–33 mm long, 2–14 mm wide, petiole 5–16 mm long; upper leaves alternate, shorter, subsessile. Flowers subsessile. Calyx tubular, 5–7.5 mm long, 5-ribbed, 2-lipped with a 3-toothed upper lip and an emarginate lower lip, teeth narrow, acute; corolla glabrous, tube very slender, brown or yellow-green, 16–20 mm long, hairy around throat, lobes spreading, oblong, obtuse, slightly unequal, 1.2–2.7 mm long, yellow with an orange-red streak above, brown to brown-purple below; anterior pair of anthers scarcely exserted, posterior pair included in the corolla; style exserted up to 3 mm. Capsule ovoid, 6–9 mm long, light-brown, adjacent to the rigid remains of the corolla-tube. Flowers Sep.–Oct.
LoM, MuM, Wim, Gold, GGr. Also naturalised WA, SA. Native to southern Africa. An occasional weed in sandy soil of west-central Victoria (mostly Dimboola-Horsham area).
