Verbatim text: Adams, R. M. and W. J. Dress. 1982. Nodding Lilium species of eastern North America (Liliaceae). Baileya 21: 165–188.
Author: Adams, R.M., Dress, W.J.
Year: 1982
Title: Nodding Lilium species of eastern North America (Liliaceae)
Journal: Baileya
Volume: 21
Pages: 165–188