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"Carex Fumosimontana (Cyperaceae), A New Endemic from the Great Smoky Mountains National Park, North Carolina and Tennessee." Brittonia 65, no. 2 (2013): 200-207.
"Ambient Ozone Effects on Gas Exchange and Total Non-Structural Carbohydrate Levels in Cutleaf Coneflower (Rudbeckia laciniata L.) Growing in Great Smoky Mountains National Park." Environmental Pollution 160, no. January (2012): 74-81.
"Galax Takes a Beating from Blackmarket Trade." Smoky Mountain News (2012).
"Harvesting Lucrative Plant Still Illegal in Smokies." The Daily Times (2012).
"A World of Wonder: Wildflowers on the Parkway." Smoky Mountain Living 10, no. 2 (2010): 66-67.
"And Heaven in a Wildflower." National Parks 83, no. 1 (2009): 1-5.
"Identification and Molecular Characterization of a Marafivirus in Rubus spp." Archives of Virology 154, no. 11 (2009): 1729-1735.
"Permutation of the Active Site of Putative RNA-Dependent RNA Polymerase in a Newly Identified Species of Plant Alpha-Like Virus." Virology 394, no. 1 (2009): 1-7.
"Variation in Seed Dispersal Along an Elevational Gradient in Great Smoky Mountains National Park." Acta Oecologica 34, no. 2 (2008): 155-162.
"Spring Wildflower Pilgrimage." Smoky Mountain Living 7, no. 2 (2007): 72-75.
"Stomatal Behavior of Ozone-Sensitive and -Insensitive Coneflowers (Rudbeckia laciniata var. digitata) in Great Smoky Mountains National Park." New Phytologist 173, no. 1 (2007): 100-109.
Great Smoky Mountains Wonder and Light. Johnson City, TN: Mountain Trail Press, 2006.
"Seasonal Profiles of Leaf Ascorbic Acid Content and Redox State in Ozone-Sensitive Wildflowers." Environmental Pollution 143, no. 3 (2006): 427-434.
"Visible Foliar Injury Caused by Ozone Alters the Relationship between SPAD Meter Readings and Chlorophyll Concentrations in Cutleaf Coneflower." Photosynthesis Research 87, no. 3 (2006): 281-286.
"Biology of Rhynencina longirostris Johnson (Diptera : Tephritidae)." Proceedings of the Entomological Society of Washington 105, no. 3 (2003): 542-547.
"Interpreting Spatial Variation in Ozone Symptoms Shown by Cutleaf Cone Flower, Rudbeckia laciniata L." Environmental Pollution 125, no. 1 (2003): 61-70.
"Predicting Rare Plant Occurrence in Great Smoky Mountains National Park, USA." Natural Areas Journal 23, no. 3 (2003): 229-237.
"Walks to Wildflowers." Smoky Mountain Living 3, no. 2 (2003): 4-6.
The Genus Thermopsis in the Southeastern United States: A Summary of Findings for Use by Land Managers and Field Biologists. Cullowhee, NC: Western Carolina University , 2002.
"Springing Eternal." Smoky Mountain Living 1, no. 1 (2001): 20-21.
"Wildflower Viewing in the Smokies." Blue Ridge Country 14, no. 3/4 (2001).
"Wildflower Walks And Drives In The Smoky Mountains." Blue Ridge Country 14, no. 3/4 (2001): 31-33.
Appalachian Wildflowers. Athens, GA: University of Georgia Press, 2000.
Modeling the Occurrence of Rare Plant Populations at the Landscape Scale, Edited by Peter S. White. Chapel Hill, NC: University of North Carolina, 2000.
