This section is from the book "Commercial Gardening Vol4", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
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.