1. Bailey, I. W., Nast, Ch. G., 1944: The comparative morphology of theWinteraceae, I. Foliar epidermis and sclerenchyma. ? J. Arn. Arb.25, 342?348.
2. Baranova, M., 1972: Systematic anatomy of the leaf epidermis in theMagnoliaceae and some related families. ? Taxon21, 447?469.
3. Bongers, J. M., 1873: Epidermal leaf characters of theWinteraceae. ? Blumea21, 381?411.
4. Cain, S. A., Castro, G. M. de, 1959: Manual of Vegetation Analysis. ? New York: Harper.
5. Chaney, R. W., Sanborn, E., 1933:Drimys americana. ? In: Publ. Carnegie Inst. Wash. (Contr. Paleontology)439, 69, pl. 12, f. 2, 3.