For Lactuca
Ballou, S.M., K.A. Omand, J. Karberg, J.M. Bonifacino, and J.R. Mandel. 2023. A harried past for a glabrous lettuce: resurrection of Lactuca sanguinea Bigelow (Cichorieae), the wood lettuce from Nantucket Island, Massachusetts, USA. Capitulum 2(2): 59-68. http://dx.doi.org/10.53875/capitulum.02.2.05
Cronquist, A. 1980. Asteraceae, Volume I, Vascular flora of the Southeastern United States. University of North Carolina Press, Chapel Hill, N.C.
McVaugh, R. 1972. Compositarum Mexicanarum pugillus. Contr. Univ. Michigan Herb. 9: 359-484.
Strother, J.L. 2006r. Lactuca. In Flora of North America Editorial Committee. 2006a. Flora of North America north of Mexico. Volume 19, Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford Univ. Press, New York, NY. 579 pp.
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