The heathers of Europe and adjacent areas. Andromeda polzfolia, Bruckenthalia spiculifolia, Calluna vulgaris, two species of Daboecia, 19 of Erica with five subspecies and seven natural hybrids are discussed. Comment is chiefly given on E . andevalenszs, E . maderensis and the group currently denominated: E . anthura, E . manipuliflora, E . multtjora and E . vagans. Two new combinations are made.