Pp. xiv, (2), 259, (3) + 68 plates - 58 in color, some text-figures. Original blue cloth, gilt-decorated, t.e.g., sm folio. The 57 colored plates are from water-color drawings of living plants by Hilda Godfery. The plates in this very scarce work depict 50 species, subspecies and varieties, and 18 natural hybrids. Many are illustrated life-size; in some cases, enlarged single flowers are presented. Publisher's errata sheet is laid at front.