References
For Narcissus
Hanks, G.R., ed. 2002. Narcissus and daffodil: the genus Narcissus. Taylor & Francis, London. 428 pp. Google Scholar
Jefferson-Brown, M.J. 1969. Daffodils and Narcissi: a complete guide to the Narcissus family. Faber and Faber, London. 224 pp. Google Scholar
Jefferson-Brown, M.J. 1991. Narcissus. Timber Press, Portland, OR. 224 pp. Google Scholar
Kington, S. 2008. International daffodil register and classified list 2008. Royal Horticultural Society, Wisley. Google Scholar
Meerow, A.W., and D.A. Snijman. 1998. Amaryllidaceae. Pp. 83-110. In Kubitzki, K., ed. 1998a. The families and genera of vascular plants. III. Flowering plants – Monocotyledons – Lilianae (except Orchidaceae). Springer, Berlin. 478 pp. Google Scholar
Spaulding, D.D., and T.W. Barger. 2014. Key to the Daffodils (Narcissus, Amaryllidaceae) of Alabama and adjacent states. Phytoneuron 2014-82: 1-10. Google Scholar
Stace, C. 2010. New flora of the British Isles, third edition. Cambridge Univ. Press, Cambridge. 1232 pp. Google Scholar
Straley, G.B., and F.H. Utech. 2002f. Narcissus. In Flora of North America Editorial Committee. 2002a. Flora of North America north of Mexico. Volume 26, Magnoliophyta: Liliidae: Liliales and Orchidales. Oxford Univ. Press, New York, NY. 723 pp. Google Scholar