A vascular plant systematist, Dr. Tucker is a specialist on the grass and sedge families. He serves as curator of the Stover-Ebinger Herbarium. He has strong interests in field botany and has conducted inventories for The Nature Conservancy, the Army Corps of Engineers, Illinois Dept. of Natural Resources and other agencies. His teaching interests include Plant Taxonomy, Dendrology, Aquatic Plants, Ethnobotany and Plant Morphology. He has recently published papers and monographs on the sedges of North America, Mexico, Venezuela, and Nicaragua and grasses of the Southeastern United States. Currently projects include studies of the sedge genera Cyperus, Kyllinga, and Lipocarpha for the American tropics, as part of the Flora Neotropica Monograph series.

Recent Posters and Presentations

Botanical Inventory of Prairie Ridge State Natural Area, Jasper County, Illinois. 2007

Systematics of Cyperus L. (Cyperaceae) in Brazil.  2007

Vegetation and Flora of American Beech Woods Nature Preserve, Clark County, IL.  2003

Prairie Restorations at Rock Springs Environmental Center.  2000

Jul 2002 – Jun 2003. Illinois Department of Natural Resources Illinois Wildlife Preservation Fund Botanical Inventory of Coneflower Hill Prairie, Moultrie County, Illinois. $1000

Jul 2003-Dec 2004 . Illinois Department of Natural Resources Illinois Wildlife Preservation Fund. Botanical Inventory of Wildcat Hollow State Forest, Effingham County, Illinois. $980

Tucker, G. C. 2001. Cyperus, pp. 740-757 and Kyllinga, pp. 771-773 (Cyperaceae), in W. D. Stevens et al., eds. Flora de Nicaragua (Tomo I). Monographs in Systematic Botany from the Missouri Botanical Garden 85.

Tucker, G. C. 2001. Elatinaceae, pp. 820-821 in W. D. Stevens et al., eds. Flora de Nicaragua (Tomo I). Monographs in Systematic Botany from the Missouri Botanical Garden 85.

Tucker, G. C. & J.E. Ebinger. 2001. Status of the Oak Hybrids Quercus leana and Q. runcinata in Illinois. Sida Contributions to Botany 19: 1073-1081.

Kessler, A., G.C. Tucker, & J.E. Ebinger. 2001. Prairie Restorations at Prairie Ridge State Natural Area, Jasper County, Illinois. Transactions of the Illinois State Academy of Science 94: 127-138.

Hay, S., & G.C. Tucker. 2002. Scirpus ancistrochaetus (Cyperaceae), first record in Canada. Rhodora 104: 83-85.

Tucker, G. C. 2002. Elatine (Elatinaceae) in Baldwin, B., et al. (eds.), The Jepson Desert manual, vascular plants of southeastern California, 282, 291. Univ. Calif. Press, Berkeley.

Tucker, G. C. 2002. Cyperus and Kyllinga (Cyperaceae) in Baldwin, B., et al. (eds.), The Jepson Desert Manual, vascular plants of southeastern California, 529-533. Univ. Calif. Press, Berkeley.

Tucker, G. C. 2002. Cladium (pp. 240-242), Kyllinga (193-195), Lipocarpha (195-197), and Schoenus (239-240) (Cyperaceae - Sedge Family) in Flora of North America Editorial Committee (eds.). Flora of North America, vol. 23.

Tucker, G.C., B.G. Marcks, & J.R. Carter. 2002 Cyperus (Cyperaceae -- Sedge Family) in Flora of North America Editorial Committee (eds.). Flora of North America, vol. 23., pp. 141-190.

Tucker, G. C. & J.J. Bruhl. 2002. Blysmopsis and Remirea (Cyperaceae - Sedge Family) in Flora of North America Editorial Committee (eds.). Flora of North America, vol. 23, pp. 191; 199

Edgin, B., B. Garrard, G.C. Tucker & J.E. Ebinger. 2003. Vegetation of Allison Prairie – A Gravel Prairie Reconstruction in Lawrence County, Illinois. Erigenia 19: 52-59.

Tucker, G. C. 2003. Elatinaceae. 12 pp. in S. Mori, ed. Flowering Plant Families of Tropical America. New York Botanical Garden, Bronx, N.Y.[, in press]