The rhododendron and "American plants". A treatise on the culture, propagation, and species of the rhododendron; with cultural notes upon other plants which thrive under like treatment, and descriptions of species and varieties; with a chapter upon herbaceous plants requiring similar culture. - Rand, Edward Sprague, 1834-1897. (Boston, Little, Brown, and company, 1871)
"List of ... works referred to": p. xv-xx.
Also available in digital form on the Internet Archive Web site.
Keywords: Rhododendron