Verbena
7 species naturalized Aust. (one infraspecific taxa endemic); all states and territories
Herbs with quadrangular stems and branches. Leaves opposite. Flowers in bracteate spikes in terminal often corymbose panicles. Calyx minutely 5-toothed. Corolla with 5 spreading slightly unequal lobes; tube slightly bent. Stamens 4, enclosed in the corolla tube. Ovary 4-locular with 1 ovule per loculus. Fruit separating into four 1-seeded articles.