Greek a — not, zugon — yoke, referring to the calyx, which is not 2-lipped.
Annual or perennial herbs with stems cylindrical or square. Leaves opposite, simple, entire, roundtoothed or lobed, sometimes stalked. Flower clusters leafy-bracted with stalkless,1-5-flowered, axillary whorled clusters. Calyx with 5 equal lobes and 10 or more veins. Corolla appearing 1-lipped, with short upper and lateral lobes. Stamens 4, fertile, usually protruding. Fruit a nutlet.
Grown mostly as groundcover plants for the attractive foliage and spikes of flowers in spring and early summer.
Seed and division.
As in Teucrium the upper lip is almost absent; lower lip 3-lobed (5-lobed in Teucrium).
40 species from temperate regions. Australia has 1 species.
Source: (2002). Lamiaceae. 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.