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"Altitudinal Gradients of Bryophyte Diversity and Community Assemblage in Southern Appalachian Spruce-Fir Forests." In Proceedings from the Conference on the Ecology and Management of High-Elevation Forests in the Central and Southern Appalachian Mountains, edited by James S. Rentch and Thomas M. Schuler, 226. Newtown, PA: U.S. Department of Agriculture, Forest Service, Northern Research, 2010.
"Ground-layer Bryophyte Communities of Post-adelgid Picea-Abies Forests." Southeastern Naturalist 9, no. 3 (2010): 435-452.
"New and Interesting Calicioid Lichens and Fungi from Eastern North America." The Bryologist 113, no. 2 (2010): 272-276.
Calicioid Lichens and Fungi of Great Smoky Mountains National Park. Discover Life in America, 2009.
"Evaluation of Tree Canopy Epiphytes and Bark Characteristics Associated with the Presence of Corticolous Myxomycetes." Botany-Botanique 87, no. 5 (2009): 509-517.
Influence of Exogenous Distribution of Bryophyte Community Assemblage and Tree Regeneration Dynamics in Southern Appalachian SPruce-Fir Forests. Michigan: Michigan Technological University, 2009.
"Spatial Distribution of Epiphytic Diatoms on Lotic Bryophytes." Southeastern Naturalist 8, no. 2 (2009): 305-316.
"Three New Species and One New Record of the Genus Doryphoribius Pilato, 1969 (Tardigrada: Eutardigrada: Hypsibiidae) from the Great Smoky Mountains National Park (Tennessee, USA)." Journal of Natural History 42, no. 41-42 (2008): 2595-2608.
"Notes on the Lichen Genus Lepraria in Great Smoky Mountains National Park, Southeastern North America: Lepraria lanata and L. salazinica spp. nov." Opuscula Philolichenum 4 (2007): 51-54.
""Smoky Bears" - Tardigrades of Great Smoky Mountains National Park." Southeastern Naturalist 6, no. Special Issue 1 (2007): 229-238.
"A Large-Scale, Multihabitat Inventory of the Phylum Tardigrada in the Great Smoky Mountains National Park, USA: A Preliminary Report." Hydrobiologia 558, no. 1 (2006): 111-118.
"Tree Canopy Biodiversity: Student Reserach Experienced in Great Smoky Mountains National Park." Systematics and Geography of Plants 74, no. 1 (2004): 47-65.
Bryophyte Inventory of Big Cove, Great Smoky Mountains National Park, North Carolina. Knoxville, TN/Florence, AL: University of Tennessee and University of Northern Alabama, 2001.
A Review of Lichen and Bryophyte Elemental Content Literature with Reference to Pacific Northwest Species. Bellingham, WA: United States Department of Agriculture, Forest Service, 1999.
A Study of Epixylic Bryophyte Ecology on Frasser Fir Logs in the Great Smoky Mountains National Park. Knoxville, Tennessee: University of Tennesse, 1998.
Bryophyte and Lichen Survey of Foothills Parkway, Segment 8B, Cosby-Pittman Center, Great Smoky Mountains National Park. Oak Ridge, TN, 1995.
Survey of Bryophytes and Lichens Along Foothills Parkway Right-of-Way 8D In Final Report . Pittman Center, TN: Great Smoky Mountains National Park, 1995.
Bryophytes of Sinks Area, Great Smoky Mountains National Park In Final Report. Gatlinburg, Tennessee: Great Smoky Mountain National Park, 1993.
Development of a Taxonomic/Ecological Database: Report of the Floristic Richness of Bryophytes, Great Smoky Mountains National Park In Great Smoky Mountains National Park, Final Report . Gatlinburg, Tennessee: National Park Service, 1991.
"Small Beginnings." National Wildlife (World Edition) 23, no. 3 (1985): 5-7.
A Status Report on Bryophytes of the Southern Appalachian Spruce-Fir Forests In The Southern Appalachian Spurce-fir Ecosystem: Its Biology and Threats. Gatlinburg, Tennessee: Uplands Field Research Laboratory, 1984.
"An Unusual Substrate for Knothole Moss, Anacamptodon splachnoides." The Bryologist 84, no. 4 (1981): 539-542.
"The Mosses of the Southern Blue Ridge Province and Their Phytogeographic Relationship." The Journal of the Elisha Mitchell Scientific Society 89, no. 1-2 (1973): 15-60.
"Mosses: Sensitive Indicators of Airborne Mercury Pollution." Atmospheric Environment 7, no. 7 (1973): 749-754.
"Phytogeographical Correlations Between the Bryophytes of Eastern Asia and North America." THe Journal of the Hattori Botanical Laboratory, no. 35 (1972): 263-268.
