Perennial to about 0.5 m tall, slightly hairy. Leaves ovate to lanceolate, to about 10 cm long, entire or round-toothed, stalks long. Flowers with calyx about 1.5 cm long. Corolla at least 1.5 cm long, variously coloured, a feature reflected in the range of flower colour cultivars. [P. ×webbiana hort.]
Europe
P. laciniata (L.) L. from SW and C Europe is easily distinguished by the dense covering of hair and the cut leaves; it has yellowish white, rarely pinkish or purple flowers 1.5-2 cm long, and is naturalised in NSW.
Source: (2002). Origanum. 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.
Prunella grandiflora 'Lilac Loveliness'
Flowers lilac.
Prunella grandiflora 'Pink Loveliness'
Flowers pink.
Prunella grandiflora 'Pink Prudence'
Is also listed and probably belongs here.
Flowers red.
Prunella grandiflora 'White Loveliness'
Flowers white.