The Imperial Folio is one of the rarest of natural history works, with an estimated 300 copies produced. Measuring 28 inches by 22 inches. Measuring 21.5 inches by 14.5 inches. An extremely beautiful and important work covering the most popular Rhododendrons of the day. Published 1849 - 1851, the large and showy hand colored plates measure 19.5 inches by 14 inches.
Images are large and colorful.