For Lobelia
Bowden, W.M. 1982. The taxonomy of Lobelia ×speciosa s.l. and its parental species, L. siphilitica and L. cardinalis s.l. (Lobeliaceae). Can J. Bot. 60: 2054-2070.
Lammers. 2007. In Kadereit, J.W., and C. Jeffrey. 2007. The families and genera of vascular plants. VIII. Flowering plants – Eudicots – Asterales. Springer, Berlin. 636 pp.
McVaugh, R. 1936. Studies in the taxonomy and distribution of the eastern North American species of Lobelia. Rhodora 38: 241-263, 276-298, 305-329.
McVaugh, R. 1940. Campanulaceae (Lobelioideae). In Woodson, R.E., Jr., and R.W. Schery. 1940. Contributions towards a flora of Panama. IV. Miscellaneous collections, chiefly by Paul H. Allen. Annals Missouri Bot. Garden 27: 347-350.
Pittman, A.B. and B.A. Sorrie. 2020. Lobelia batsonii (Campanulaceae), a new species from the sandhills of the Carolinas. Phytoneuron 2020-79: 1–9. Published 18 November 2020. ISSN 2153 733X
Rosatti, T.J. 1986. The genera of Sphenocleaceae and Campanulaceae in the southeastern United States. J. Arnold Arb. 67: 1-64.
Spaulding, D.D., and T.W. Barger. 2016. Keys, distribution, and taxonomic notes for the lobelias (Lobelia, Campanulaceae) of Alabama and adjacent states. Phytoneuron 2016-76: 1-60.
Spaulding, D.D., T.W. Barger, and H.E. Horne. 2016. A new species of Lobelia (Campanulaceae) from Florida. Phytoneuron 2016-63: 1-9.
Thompson, S.W., and T.G. Lammers. 1997. Phenetic analysis of morphological variation in the Lobelia cardinalis complex (Campanulaceae: Lobelioideae). Systematic Botany 22: 315-331.
Virginia Botanical Associates. 2023. Digital Atlas of the Virginia Flora (http://www.vaplantatlas.org). c/o Virginia Botanical Associates, Blacksburg.
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