Hitchcock, C.L. and A. Cronquist. 2018. Flora of the Pacific Northwest: An Illustrated Manual, 2nd Edition. Edited by D.E. Giblin, B.S. Legler, P.F. Zika, and R.G. Olmstead. University of Washington Press, Seattle, WA.

Kimball, S. F. and P. Lesica. 2013. Trees and Flowering Shrubs of Glacier National Park.  Trillium Press, Kalispell, Montana.

Lesica, P. 2012. Manual of Montana Vascular Plants. Botanical Research Institute of Texas, Fort Worth. Lesica, P. 2012. New combinations for the Montana flora. Journal of the Botanical Research Institute of Texas 6: 25-27.

Odegard, C. 2012. Noteworthy collections, Montana. Madrono 59: 166.

Zika, P.F. 2012. Juncus trilocularis (Juncaceae), a new rush species from western North America. Rhodora, 114:309-329.

Lesica, P. 2009. Draba calcifuga (Brassicaceae), a new species from the Rocky Mountains of North America. Novon, Vol. 19: 182-186.

Lesica, P. and W. Fertig. 2009. Noteworthy Collections – Montana. Madrono, 56(1): p.67.

Jacobson, A.L., and P.F. Zika. 2007. A new hybrid cherry, Prunus x pugetensis (P. avium x emarginata, Rosaceae), from the Pacific Northwest. Madrono, Vol.54, No.1, pp.74-85.

Several Flora of North America treatments in the Poaceae, Part 1 (Volume 24) including Poa by Rob Soreng and Trisetum by John H. Rumely.

Lesica, P., R. Yurkewycz and E. E. Crone. 2006. Rare plants are common where you find them. American Journal of Botany 93: 454-459.

Kimball, S. F. and P. Lesica. 2005. Wildflowers of Glacier National Park and surrounding area. Trillium Press, Kalispell, Montana.

Lesica, P. 2005. The resurrection of Erigeron parryi (Asteraceae) Brittonia 57: 47-54.

Thompson, D. M. 2005. Systematics of Mimulus subgenus Schizoplacus (Scrophulariaceae). Systematic Botany Monographs 75: 1-213.

Alberta Sustainable Resource Development. 2004. Status of the tiny cryptanthe (Cryptantha minima) in Alberta. Alberta Sustainable Resource Development, Fish and Wildlife Division, and Alberta Conservation Association Wildlife Status Report No. 54. Edmonton, Alberta.

Alderman, S. C., R. R. Halse and J. F. White. 2004. A reevaluation of the host range and geographical distribution of Claviceps species in the United States. Plant Disease 88: 63-81.

Mechanda, S. M., B. R. Baum, D. A. Johnson and J. T. Arnason. 2004. Analysis of diversity of natural populations and commercial lines of Echinacea using AFLP. Canadian Journal of Botan.