References
For Hyacinthoides
Grundmann, M., F.J. Rumsey, S.W. Ansell, S.J. Russell, S.C. Darwin, J.C. Vogel, M. Spencer, J. Squirrell, P.M. Hollingsworth, S. Ortiz, and H. Schneider. 2010. Phylogeny and taxonomy of the bluebell genus Hyacinthoides, Asparagaceae [Hyacinthaceae]. Taxon 59: 68-82. Google Scholar
McNeill, J. 2002b. Hyacinthoides. 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
Speta, F. 1998. Hyacinthaceae. Pp. 261-268. 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
Stace, C. 2010. New flora of the British Isles, third edition. Cambridge Univ. Press, Cambridge. 1232 pp. Google Scholar