A Heath garden is no uncommon feature of large places where the soil is peaty. There is the peat of a wet bog and there is the peat of a sandy upland; it is the latter which suits Ericas. There is no connection between the names Erica and Heath, the former indicating the brittleness of the stems, the latter a barren waste. The common Heath or Heather, vulgaris, has been dealt with under Calluna. Of those generally grown under the name of Erica, arborea, australis, carnea (syn. herbacea) and c. alba, ciliaris, cinerea and its forms alba and atropurpurea, codonodes (syn. lusitanica) Mackayana, mediterranea and its varieties alba and hybrida, Tetralix and its varieties alba, intermedia and rubra, vagans (Cornish Heather) and its forms alba, carnea and rubra, are the most important. Scoparia, stricta and Veitchii are also met with. Carnea and codonodes (lasting till summer) flower in the winter; vagans in later summer or autumn; arborea, mediterranea and australis in spring; ciliaris, stricta and Tetralix in summer.