Prostanthera Labill.

Subshrubs, shrubs or small trees, upper calyx lip with no protuberance Prostanthera

Leaves subtending flowers similar to the lower leaves or slightly smaller

Leaves flat (sometimes slightly recurved in P. hindii and P. junonis) concave upwards or with incurved margins

Leaves entire

Decumbent spreading shrub to 30 cm high. Hairs on branches in opposite decusate bands. Anther appendage not twice as long as anther cells Prostanthera junonis

Shrubs up to 2 m high, hoary with appressed hairs or almost glabrous. Anthers with one appendage c. twice as long as the anther cell; the other appendage short.