The common kind, glutinosa, is largely grown for planting in wet or marshy ground on account of its quick growth. There are several varieties, such as aurea, golden; laciniata, with drooping habit and Fern-like leaves; im~ perialis or asplenifolia, also deeply cut leaves; incisa or oxyacanthifolia, with Hawthorn-like leaves; and quer-cifolia, with leaves lobed like those of the Common Oak. Other Alders are the Grey, White, or Hoary, in-cana\ and the Green one, viridis; to which may be added nitida, a fine Himalayan tree, with leaves 5-6 in. long.