Austin, D. F. and Z. Huaman. 1996. A synopsis of Ipomoea (Convolvulaceae) in the
		Americas. Taxon 45: 3-38.
	   Austin, D.F., D.M. Binninger, and D.J. Pinkava. 1998. Uniqueness of the endangered
		Florida semaphore cactus (Opuntia corallicola). Sida 18 (2): 527-534.
	   Avery, G.N. 1982. Cereus robinii in Florida. Report in files of Florida Natural Areas
		Inventory, Tallahassee, Florida.
	   Becker, H. 1999. New technique could boost taxol production. Agricultural Research
		Magazine: April 1999 (http://www.ars.usda.gov/is/AR/archive/apr99/taxol0499.).
	   Beckner, J. 1982. Lupinus aridorum J.B. McFarlin ex Beckner (Fabaceae), a new
		species from central Florida. Phytologia 50(3): 209-211.
	   Bennett, B.C. 1982. Ecology and distribution of six species of the Bromeliaceae in
		southern Florida. Florida Scientist 45 (supplement 1): 22.
	   Benson, L. 1982. The cacti of the United States and Canada. Stanford University
		Press, Stanford, California.
	   Bolen, L.E. 1997. Growth dynamics of the seagrass Halophila johnsonii from a
		subtropical estuarine lagoon in southeastern Florida, USA. M.S. Thesis, Florida
		Atlantic University, Boca Raton, Florida.
	   Boufford, D.E. 1982. Notes on Peperomia (Piperaceae) in the southeastern United
		States. Journal of the Arnold Arboretum 63: 317-325.
	   Boyer, M. 1993. Agency draft recovery plan for Cooley's meadowrue (Thalictrum
		cooleyi Ahles). U.S. Fish and Wildlife Service, Atlanta, Georgia.
	   Bradley, K.A. and G.D. Gann. 1995. Endangered species status survey: Polygala
		smallii Smith & Ward. U.S. Fish and Wildlife Service, Jacksonville, Florida.
	   Bradley, K.A. and G.D. Gann. 1999. Status summaries of 12 rockland plant taxa in
		southern Florida. Institute for Regional Conservation, Miami, Florida.
	   Britton, N.L. and J.N. Rose. 1937. The Cactaceae. Dover Publications, New York.
	   Brown, P.M and S.N. Folsom. 2001. The wild orchids of Florida. University Presses
		of Florida, Gainesville, Florida.
	   Bruner, J.L. 1987. Systematics of the Schizachyrium scoparium (Poaceae) complex
		in North America. Ph.D. dissertation, Ohio State University, Columbus, Ohio.
	   Burch, D. 1966. Two new species of Chamaesyce (Euphorbiaceae), new combina-tions,
		and a key to the Caribbean members of the genus. Annals of Missouri
		Botanical Garden 53: 90-99.
	   Burkhalter, J.R. 2000. Personal communication: status of Potamogeton floridanus.
	   Burks, K.C. 2000. Personal communication: status of Potamogeton floridanus.
		Case, F.W. and R.B. Case. 1976. The Sarracenia rubra complex. Rhodora 78: 270-
		325.
	   Channell, R.B. 1957. A revisional study of the genus Marshallia (Compositae).
		Contributions of the Gray Herbarium 181: 41-132.
	   Channell, R.B. and C.E. Wood, Jr. 1962. The Leitneriaceae in the southeastern
		United States. Journal of the Arnold Arboretum 43: 435-38.
	   Christman, S.P. and W.S. Judd. 1990. Notes on plants endemic to scrub. Florida
		Scientist 53: 52-73.
	   Chrysler, M.A. 1941. Structure and development of Ophioglossum palmatum.
		Bulletin Torrey Botanical Club 68(1):1-19.
	   CITES. 2000. Convention on International Trade in Endangered Species of Flora and
		Fauna. Available on the internet at http://www.wcmc.org.uk/cites.
	   Clewell, A. F. 1985. Guide to the vascular plants of the Florida panhandle. Univer-sity
		Presses of Florida, Florida State University Press, Tallahassee, Florida.
	   Coile, N.C. 1992. Pinks, pinked, and pink! Botany Circular No. 26. Florida
		Department of Agriculture and Consumer Services, Division of Plant Industry,
		Gainesville, Florida.
	   Coile, N.C. 1999. Key to Asclepias species in Florida. Florida Department of
		Agriculture and Consumer Services, Gainesville, Florida.
	   Coile, N.C. 2000. Notes on Florida's endangered and threatened plants. Bureau of
		Entomology, Nematology, and Plant Pathology: Botany Section, No. 38, 4 th ed.
		Florida Department of Agriculture and Consumer Services, Gainesville, Florida.
	   Core, E.L. 1941. The North American species of Paronychia. American Midland
		Naturalist 26: 369-397.
	   Correll, D.S. and H.B. Correll. 1982. Flora of the Bahama archipelago. Strauss &
		Cramer, Hirschberg, Germany.
	   Coville, F.V. 1924. Grossularia echinellum, a spiny-fruited gooseberry from Florida.
		Journal of Agricultural Research 28 (1): 71-76.
	   Cox, A. C. 1998. Comparative reproductive biology of two Florida pawpaws,
		Asimina reticulata Chapman and Asimina tetramera Small. Ph.D. dissertation,
		Florida International University, Miami, Florida.
	   Cox, P.B. and L.E. Urbatsch. 1994. A taxonomic revision of Rudbeckia subgenus
		Macrocline (Asteraceae: Heliantheae: Rudbeckiinae). Castanea 59: 300-318.
	   Creel, O.R. 2000. The evil weevil: what will Florida lose? The Palmetto 19(4):10-13.
	   Cronquist, A. 1980. Vascular flora of the southeastern United States, Vol. 1:
		Asteraceae. University of North Carolina Press, Chapel Hill, North Carolina.
	   Crook, R.W. 1998. Systematics of Conradina (Lamiaceae). Ph.D. Dissertation.
		University of Georgia, Athens, Georgia.
	   D'arcy, W.G. 1987. Flora of Panama. Annals of the Missouri Botanical Garden, St.
		Louis, Missouri.
	   Day, J.W. 1975. Autecology of Leitneria floridana. Ph.D. dissertation. Mississippi
		State University, Starkville, Mississippi.
	   DeLaney, K.R. and R.P. Wunderlin. 1989. A new species of Crotalaria (Fabaceae)
		from the Florida Central Ridge. Sida 13: 315-324.
	   DeLaney, K.R., R.P. Wunderlin, and B.F. Hansen. 1989. Rediscovery of Ziziphus
		celata (Rhamnaceae). Sida 13(3): 325-330.
	   Determann, R., L.K. Kirkman, and H. Nourse. 1997. Plant conservation by
		propagation: the cases of Macranthera and Schwalbea. Tipularia 12:2-12.
	   Dolan, R.W., R. Yahr, E.S. Menges, Matthew D. Halfhill. 1999. Conservation
		implications of genetic variation in three rare species endemic to Florida
		rosemary scrub. American Journal of Botany 86: 1556.
	   Dress, W.J. 1954. Two new Floridan species of Chrysopsis, Ell. (Compositae).
		Gentes Herbarium 8(5): 404-409.
	   Duncan, W.H. and L.E. Foote. 1975. Wildflowers of the southeastern United States.
		University of Georgia Press, Athens, Georgia.
	   Duncan, W.H. and T.M. Pullen. 1962. The lepidote rhododendrons of the southeast-ern
		United States. Brittonia 14: 290-298.
	   Durako, M. and F. Wettstein. 1994. Johnson's seagrass: the Rodney Dangerfield of
		seagrasses. The Palmetto, Winter 1994: 3-5.
	   Eiseman, N.J. and C. McMillan. 1980. A new species of seagrass, Halophila
		johnsonii, from the Atlantic Coast of Florida. Aquatic Botany 9: 15-19.
	   Eisner, T., K.D. McCormick, M. Sakaino, M. Eisner, S.R. Smedley, D.J.
		Aneshansley, M. Deyrup, R.L. Myers, J. Meinwald. 1990. Chemical defense of
		a rare mint plant. Chemoecology 1: 30-37.
	   Elfers, S.C. 1989. A biosystematic study of Chionanthus in the southeastern United
		States. M.S. thesis, University of Central Florida, Orlando, Florida.
	   Elias, T.E. 1987. The complete trees of North America: a field guide and natural
		history. Gramercy Publishing Company, New York.
	   Epstein, M. 1994. Delicate balance: pygmy-pipes (Monotropsis reynoldsiae).
		Florida Wildlife: July/Aug 1994: 80.
	   Evans, A.M. 1969. Interspecific relationships in the Polypodium pectinatum-plumula
		complex. Annals Missouri Botanical Garden 55: 193-293.
	   Evans, A.W. 1952. The Cladoniae of Florida. Transactions of the Connecticut
		Academy of Arts and Sciences 38: 249-336.
	   Fantz, P.R. 1977. A monograph of the genus Clitoria (Leguminosae: Glycineae).
		Ph.D. dissertation. University of Florida, Gainesville, Florida.
	   Federal Register. 1984. Endangered and threatened wildlife and plants; Ribes
		echinellum (Miccosukee gooseberry) proposed to be a threatened species. 50
		CFR Part 17. Vol. 49 (171): 34535-34538.
	   Federal Register. 1985. Endangered and threatened wildlife and plants; determination
		of threatened status for Ribes echinellum (Miccosukee gooseberry); final rule. 50
		CFR Part 17. Vol. 50 (138): 29338-29341.
	   Federal Register. 1991. Endangered and threatened wildlife and plants; proposed
		endangered status for Schwalbea americana (American chaffseed). 50 CFR Part
		17. Vol. 56 (176): 46277-46281.
	   Federal Register. 1992a. Endangered and threatened wildlife and plants; endangered
		status for Schwalbea americana (American chaffseed). 50 CFR Part 17. Vol. 57
		(189): 44703-44708.
	   Federal Register. 1992b. Endangered and threatened wildlife and plants; threatened
		status for three Florida plants, final rule, May 8, 1992. Federal Register 57 (90):
		19813-19819.
	   Federal Register. 2000. Designated critical habitat for Johnson's seagrass. Federal
		Register 65(66): 17786-17804.
	   Fernald, M.L. 1945. Ruellia in the eastern United States. Rhodora 47 (553): 1-90.
	   Fernando, E.S. and C.J. Quinn. 1995. Picramniaceae, a new family, and a
		recircumscription of Simaroubaceae. Taxon 44: 177-181.
	   FNA (Flora of North America Editorial Committee). 1993. Flora of North America
		north of Mexico, Vol. 2: pteridophytes and gymnosperms. Oxford University
		Press, New York.
	   FNA (Flora of North America Editorial Committee). 1997. Flora of North America
		north of Mexico, Vol. 3: Magnoliophyta: Magnoliidae and Hamamelidae. Oxford
		University Press, New York.
	   FNA (Flora of North America Editorial Committee). 2000. Flora of North America
		north of Mexico. Available on the internet at http://hua.huh.harvard.edu.
	   FNAI. 1992. Status survey for Hymenocallis henryae. Florida Natural Areas
		Inventory, Tallahassee, Florida.
	   Folkerts, G.W. 1982. Gulf coast pitcherplant bogs. American Scientist 70: 260-267.
	   Foote, L.E. and S.B. Jones Jr. 1989. Native shrubs and woody vines of the south-east.
		Timber Press, Portland, Oregon.
	   Frank, J.H. 2000. Florida's native bromeliads imperilled by exotic evil weevil. The
		Palmetto 19(4): 6-10.
	   Frank, J.H. and M.C. Thomas. 1996. Weevils that eat bromeliads. Published on the
		internet at http://www.ifas.ufl.edu/~frank/wvbrom.htm.
	   Freeman, J.D.1975. Revision of Trillium subgenus Phyllantherum (Liliaceae).
		Brittonia 27: 1-62.
	   Fryxell, P.A. 1969. The genus Cienfuegosia Cav. (Malvaceae). Annals of Missouri
		Botanical Garden 56: 179-250.
	   Fryxell, P.A. 1979. The natural history of the cotton tribe (Malvaceae, tribe
		Gossypieae). Texas A&M University Press, College Station, Texas.
		Garland, M.A. 1993. Distribution of Pinguicula ionanatha in the Apalachicola
		National Forest. Florida Natural Areas Inventory, Tallahassee, Florida.
	   Gilbert, K.M., J.D. Tobe, R.W. Cantrell, M.E. Sweeley, and J.R. Cooper. 1995. The
		Florida Wetlands Delineation Manual. Florida Department of Environmental
		Protection, Tallahassee, Florida.
	   Godfrey, R. K. 1961. Liatris provincialis, sp. nov. (Compositae), in western Florida.
		American Midland Naturalist 66:466-470.
	   Godfrey, R.K. 1988. Trees, shrubs, and woody vines of northern Florida and
		adjacent Georgia and Alabama. University of Georgia Press, Athens, Georgia.
	   Godfrey, R.K. and A.F. Clewell. 1965. Polygamodioecious Leitneria floridana
		(Leitneriaceae). Sida 2: 172-173.
	   Godfrey, R.K. and R. Kral. 1958a. Observations on the Florida flora. Brittonia 10:
		166-177.
	   Godfrey, R.K. and R. Kral. 1958b. A new species of Vicia (Leguminosae) in Florida.
		Rhodora 60: 256-258.
	   Godfrey, R.K. and H.L. Stripling. 1961. A synopsis of Pinguicula (Lentibulariaceae)
		in the southeastern United States. American Midland Naturalist 66(2): 395-409.
	   Godfrey, R.K. and J. W. Wooten. 1979. Aquatic and wetland plants of southeastern
		United States: monocotyledons. University of Georgia Press. Athens, Georgia.
	   Godfrey, R.K. and J. W. Wooten. 1981. Aquatic and wetland plants of southeastern
		United States: dicotyledons. University of Georgia Press, Athens, Georgia.
	   Godt, M.J., T. Race, and J.L. Hamrick. 1996. A population genetic analysis of
		Ziziphus celata, an endangered Florida shrub. U.S. Fish and Wildlife Service,
		Jacksonville, Florida.
	   Godt, M.J., J. Walker, and J.L. Hamrick. 1997. Genetic diversity in the endangered
		lily Harperocallis flava and a close relative, Tofieldia racemosa. Conservation
		Biology 11(2): 361-366.
	   Goldblatt, P. 1975. Revision of the bulbous Iridaceae of North America. Brittonia 27:
		373-385.
	   Goldblatt, P. and J.E. Henrich. 1991. Calydorea Herbert (Iridaceae: Tigridieae): notes
		on this new world genus and reduction to synonymy of Salpingostylis,
		Cardiostigma, Itysa, and Catila. Annals of the Missouri Botanical Garden 78:
		504-511.
	   Gordon, D.R. 1993. Responses of two rare species to manipulation: effects of fire
		on Matelea alabamensis and effects of transplanting and shade on Conradina
		glabra. Final report to KOSE Grant K91SE11, The Nature Conservancy,
		Gainesville, Florida.
	   Gordon, D.R. 1996a. Apalachicola rosemary (Conradina glabra) reintroduction. In,
		D.A. Falk, C.I. Millar, M. Olwell, Restoring diversity: strategies for reintroduc-tion
		of endangered plants. Center for Plant Conservation, Washington, D.C.
	   Gordon, D.R. 1996b. Experimental translocation of the endangered shrub Conradina
		glabra (Apalachicola rosemary) to the Apalachicola Bluffs and Ravines Preserve,
		Florida. Biological Conservation 77:19-26.
	   Gordon, D.R. and T.L. Kubisiak. 1998. RAPD analysis of the last population of
		likely Florida Keys endemic cactus. Florida Scientist 61: 203-210.
	   Gould, K. 1996. A new, disjunct variety of Spigelia gentianoides (Loganiaceae) from
		Bibb County, Alabama. Sida 17(2): 417-421.
	   Graham, S.A. 1964. The genera of Lythraceae in the southeastern United States.
		Journal of the Arnold Arboretum 45: 235-250.
	   Graham, S.A. 1975. Taxonomy of the Lythraceae of the southeastern United States.
		Sida 6:80-103.
	   Guala, G. 1993. Element stewardship abstract: Bigelowia nuttallii. The Nature
		Conservancy, Arlington, Virginia.
	   Guala, G. and D.R. Gordon. 1992. Element stewardship abstract for Marshallia
		ramosa, southern Barbara's buttons. The Nature Conservancy, Arlington, Va.
	   Gupton, O.W. and F.C. Swope. 1986. Wild orchids of the Middle Atlantic states.
		University of Tennessee Press, Knoxville, Tennessee.
	   Hall, D.W. 1978. The grasses of Florida. Ph.D. dissertation, University of Florida,
		Gainesville, Florida.
	   Hammer, R.L. 1981. Finding new orchids: a contribution to the Orchidaceae of
		Florida. Fairchild Tropical Garden Bulletin 36: 16-18.
	   Hammer, R.L. 1992. The strange case of Carter's orchid. Fairchild Tropical Garden
		Bulletin April 1992: 34-39.
	   Hammer, R.L. 1997. Postcards from paradise: those confusing lantanas. Wildland
		Weeds, Winter: 4-5.
	   Harper, R.M. 1911a. Chondrophora virgata [Bigelowia nudata] in West Florida.
		Torreya 11(4): 92-98.
	   Harper, R.M. 1911b. New plum from the Lake Region of Florida. Torreya 11: 64-67.
	   Harper, R.M. 1925. A botanically remarkable locality in the Tallahassee Red Hills of
		middle Florida. Torreya 25 (3): 45-54.
	   Harper, R.M. 1942. Croomia a member of the Appalachian flora. Castanea 7: 109.
	   Hartnett, D.C. and D.R. Richardson. 1989. Population biology of Bonamia
		grandiflora (Convolvulaceae): effects of fire on plant and seed bank dynamics.
		American Journal of Botany 76(3): 361-369.
	   Hawkes, C.V. and E.S. Menges. 1995. Density and seed production of a Florida
		endemic, Polygonella basiramia, in relation to time since fire and open sand.
		American Midland Naturalist 133: 138-148.
	   Hawkes, C.V. and E.S. Menges. 1996. The relationship between open space and fire
		for species in a xeric Florida shrubland. Journal of the Torrey Botanical Society
		123(2): 81-92.
	   Helkowski, J. and A. F. Johnson. 2000. Study of the effects of 1998 central Florida
		wildfires on Rugel's pawpaw (Deeringothamnus rugelii). Florida Natural Areas
		Inventory, Tallahassee, Florida.
	   Helton, R.C., L.K. Kirkman, L.J. Musselman. 2000. Host preference of the federally
		endangered hemiparasite Schwalbea americana L. (Scrophulariaceae). Journal of
		the Torrey Botanical Society 127(4): 300-306.
	   Henrickson, J. 1996. Notes on Spigelia (Loganiaceae). Sida 17(1): 89-103.
	   Henry, M. G. 1946. A new lily from southern Alabama and northern Florida.
		Bartonia 24:1-4.
	   Hermann, S.M. 1995. Status and management of Florida's carnivorous plant
		communities. Florida Game and Freshwater Fish Commission, Nongame Wildlife
		Program, Tallahassee, Florida.
	   Herndon, A. 1981. Galactia smallii: a new name for G. prostrata Small. Rhodora 83:
		471-472.
	   Herndon, A. 1989. Revision of the Chamaesyce garberi complex of southern
		Florida, USA. American Journal of Botany 76 (6): 245.
	   Herndon, A. 1993. Notes on Chamaesyce (Euphorbiaceae) in Florida. Rhodora 95
		(883/884): 352-368.
	   Herndon, A. 1999. Life history of Liatris ohlingerae (Asteraceae), an endangered
		plant endemic to the Lake Wales Ridge, Florida. Florida Fish and Wildlife
		Conservation Commission, Tallahassee, Florida.
	   Hitchcock, A.S. and A. Chase. 1950. Manual of the grasses of the United States, 2 nd
		edition. Dover Publications, New York.
	   Huck, R.B. 1981. Dicerandra cornutissima, a new woody Labiatae from Florida.
		Phytologia 47(4): 313-315.
	   Huck, R.B. 1987. Systematics and evolution of Dicerandra (Labiatae).
		Phanerogamarum monographiae XIX. Gebruder Borntraeger Verlagsbuchhand-lung.
		Stuttgart, Germany.
	   Huck, R.B., W.S. Judd, W.M. Whitten, J.D. Skean, R.P. Wunderlin, K.R. Delaney.
		1989. A new Dicerandra (Labiatae) from the Lake Wales Ridge of Florida, with a
		cladistic analysis and discussion of endemism. Systematic Botany 14(2):197-
		213.
	   IRC (Institute for Regional Conservation). 1999. Floristic inventory of southern
		Florida database. Presented by Fairchild Tropical Garden. Available on the
		internet at http://www.regionalconservation.org.
	   IRC. 2000. Notes on three Pecluma species in southern Florida. On file at Florida
		Natural Areas Inventory. Institute for Regional Conservation, Miami, Florida.
	   Isely, D. 1982. New combinations and one new variety among the genera Indigofera,
		Robinia, and Tephrosia (Leguminosae). Brittonia 34(3): 339-341.
	   Isely, D. 1986a. Notes about Psoralea sensu auct., Amorpha, Baptisia, Sesbania, and
		Chamaecrista (Leguminosae) in the southeast United States. Sida 11(4):429-440.
	   Isely, D. 1986b. Notes on Leguminosae: Papilionoideae of the southeastern United
		States. Brittonia 38(4): 352-59.
	   Isely, D. 1990. Vascular flora of the southeastern United States, Vol. 3, Part 2
		(Leguminosae-Fabaceae). University of North Carolina Press, Chapel Hill, NC.
	   Johnson, A.F. 1993. Population status survey of Chrysopsis godfreyi Semple.
		Florida Natural Areas Inventory, Tallahassee, Florida.
	   Johnson, A.F. 1996. Element stewardship abstract for Rhododendron chapmanii.
		Florida Natural Areas Inventory, Tallahassee, Florida.
	   Johnson, A.F. 1998. A survey for the Etoniah rosemary (Conradina etonia) on
		Etoniah Creek State Forest, Putnam County, Florida. Florida Natural Areas
		Inventory, Tallahassee, Florida.
	   Johnson, A. F. 1999. A survey for beautiful pawpaw (Deeringothamnus pulchellus)
		on Babcock-Webb Wildlife Management Area and Charlotte Harbor State Buffer
		Preserve, Charlotte and Lee Counties, Florida. Florida Natural Areas Inventory,
		Tallahassee, Florida.
	   Johnson, A.F., S.A. Murray, and G.E. Schultz. 1997. Final report on the 1997 search
		for Triphora latifolia, a GH-ranked Florida orchid. Florida Natural Areas
		Inventory, Tallahassee, Florida.
	   Johnson A. F. and D. J. Printiss. 1999. A re-survey of known sites for the panhandle
		lily (Lilium iridollae) in northwest Florida, exclusive of Eglin Air Force Base.
		Florida Natural Areas Inventory, Tallahassee, Florida.
	   Johnson, A. F. and G. E. Schultz. 1999. Results of a survey for new populations of
		Rugel's pawpaw (Deeringothamnus rugelii) in Volusia County following
		wildfires in June 1998. Florida Natural Areas Inventory, Tallahassee, Florida.
	   Johnson, R.T. 1993. Schwalbea americana element stewardship abstract. The
		Nature Conservancy, Arlington, Virginia.
	   Johnson, R. T. and M.J. Russell. 1993. Schwalbea americana element global ranking
		form. The Nature Conservancy, Arlington, Virginia.
	   Joiner, M.S. 1998. Fothergilla gardenii: rare jewel of the coastal plain. Tipularia
		13(1): 17-22.S
	   Judd, W.S. and D.W. Hall. 1984. A new species of Ziziphus (Rhamnaceae) from
		Florida. Rhodora 86: 381-387.
	   Jue, S., C. Kindell, and J. Wojcik. 2001. Florida Conservation Lands. Florida Natural
		Areas Inventory, Tallahassee, Florida.
	   Kass, H. 1990. Once a savior, moth (Cactoblastus cactorum) is now a scourge. Plant
		Conservation 5(2): 3.
	   Keppner, E.J. and L.A. Keppner. 2001. Biology and conservation status of smooth-bark
		St. John�s-wort. Bay County Audubon Society, Panama City, Florida.
	   Kernan, K. 2000. Endangered species profile: semaphore cactus (Opuntia corallic-ola).
		Fairchild Tropical Garden (www.ftg.org/research/semaphorecactus.html).
	   Kirkman, K.L., M.B. Drew, and D. Edwards. 1998. Effects of experimental fire
		regimes on the population dynamics of Schwalbea americana L. Plant Ecology
		137: 115-137.
	   Kral, R. 1960. A revision of Asimina and Deeringothamnus (Annonaceae). Brittonia
		12: 233-78.
	   Kral, R. 1966. The genus Xyris (Xyridaceae) in the southeastern United States and
		Canada. Sida 2: 177-260.
	   Kral, R. 1983. A report on some rare, threatened, or endangered forest-related
		vascular plants of the south. Technical Publication R8-TP2. United States
		Department of Agriculture, Forest Service, Southern Region, Atlanta, Georgia.
	   Kral, R. 1995. Status report on Rhexia salicifolia. U.S. Fish and Wildlife Service,
		Jackson, Mississippi.
	   Kral, R. and P.E. Bostick. 1969. The genus Rhexia (Melastomataceae). Sida 3(6):
		387-440.
	   Kral, R. and R. B. McCartney. 1991. A new species of Conradina (Lamiaceae) from
		northeastern Florida. Sida 14: 391-398.
	   Kwit, C., M.W. Schwartz, W.J. Platt, and J.P. Geaghan. 1998. Distribution of tree
		species in steepheads of the Apalachicola River bluffs, Florida. Journal of the
		Torrey Botanical Society 125(4): 309-318.
	   Lakela, O. and R.K. Long. 1976. Ferns of Florida. Banyan Books, Miami, Florida.
	   Lambert, B.B. and E.S. Menges. 1996. The effects of light, soil disturbance, and
		presence of organic litter on the field germination and survival of the Florida
		goldenaster, Chrysopsis floridana Small. Florida Scientist 59(2): 121-137.
	   Landry, S. 1997. Monitoring plan for Campanula robinsiae: summary of current
		knowledge and 1995-1997 search attempts. Florida Natural Areas Inventory,
		Tallahassee, Florida.
		Langdon, K.R.1976. Illicium parviflorum, correct name for the anisetree of the
		Florida nursery trade. Nematology/Botany Circular 19. Florida Department of
		Agriculture and Consumer Services, Division of Plant Industry, Gainesville, Fl.
	   Langdon, K.R. 1980. The bromeliad, Guzmania monostachya, an endangered plant in
		Florida. Nematology Circular 69 (Botany 12), Contribution 220, Bureau of
		Nematology. Florida Department of Agriculture and Consumer Services,
		Gainesville, Florida.
	   Langdon, K.R. 1981a. Hand fern, Ophioglossum palmatum, endangered and
		becoming extremely rare in Florida. Nematology/Botany Circular 14, Contribu-tion
		231, Bureau of Nematology. Florida Department of Agriculture and
		Consumer Services, Gainesville, Florida.
	   Langdon, K.R. 1981b. The seriously depleted cowhorn orchid, Cyrtopodium
		punctatum, endangered in Florida. Nematology/Botany Circular 74, Contribution
		226, Bureau of Nematology. Florida Department of Agriculture and Consumer
		Services, Gainesville, Florida.
	   Langdon, K.R. 1984. Pygmy fringe-tree, Chionanthus pygmaeus, endangered by loss
		of habitat. Botany Circular 21, Contribution 22, Office of Systematic Botany.
		Florida Department of Agriculture and Consumer Services, Gainesville, Florida.
	   Langeland, K.A. and K.C. Burks, eds. 1998. Identification and biology of non-native
		plants in Florida's natural areas. IFAS Publications, Gainesville, Florida.
	   Latimer, S.D. 1994. Magnolia ashei Weatherby (Magnoliaceae): biology and
		conservation of an endangered species. Ph.D. dissertation. Tulane University,
		New Orleans, Louisiana.
	   Lee, J. 1999. Florida bonamia, our resilient scrub morning glory: will it survive? The
		Palmetto 19 (2): 16-17.
	   Leenhouts, P.W. 1983. Notes on the extra-Australian species of Dodonaea
		(Sapindaceae). Blumea 28 (2):271-289.
	   Lellinger, D.B. and A.M. Evans. 1985. A field manual of the ferns and fern-allies of
		the United States and Canada. Smithsonian Institution Press, Washington, D.C.
	   Leonard, S.W. and W.W. Baker. 1983. Additional populations of Harperocallis flava
		McDaniel (Liliaceae). Castanea 48: 151-152.
	   Lewis, P.O. and D.J. Crawford. 1995. Pleistocene refugium endemics exhibit greater
		allozymic diversity than widespread congeners in the genus Polygonella
		(Polygonaceae). American Journal of Botany 82: 141-149.
	   Long, R.W. 1970. The genera of Acanthaceae in the southeastern United States.
		Journal of the Arnold Arboretum 51 (3): 257-309.
	   Long, R.K. and O. Lakela. 1976. A flora of tropical Florida: a manual of the seed
		Plants and ferns of southern peninsular Florida. Originally published by
		University of Miami Press. Banyan Books, Miami, Florida.
	   Luer, C.A. 1966. Two new species of Triphora (Orchidaceae) from Florida. Brittonia
		18:241-243.
	   Luer, C.A. 1969. A new species of Triphora in Florida. American Orchid Society
		Bulletin October: 878-880.
	   Luer, C.A. 1972. The native orchids of Florida. New York Botanical Garden, NY.
	   Luteyn, J.L, W.S. Judd, S.P. Vander Kloet, L.J. Dorr, G.D. Wallace, K.A. Dron, P.F.
		Stevens, and S.E. Clements. 1996. Ericaceae of the southeastern United States.
		Castanea 61:101-144.
	   Luther, H.E. and G.K. Brown. 2000. Bromeliaceae and Catopsis. Flora of North
		America, Vol. 22. Published on the internet at http://hua.huh.harvard.edu/cgi-bin.
		Mackiernan, J.M. and E.M. Norman. 1979. Reproductive biology of Nemastylis
		floridana Small (Iridaceae). Florida Scientist 42(4): 229-236.
	   Mathew, B., ed. 1994. CITES guide to plants in trade. Convention on International
		Trade in Endangered Species of Wild Fauna and Flora, Dept. of Environment.
	   McCartney, C. 1985a. South Florida's epiphytic orchids: how healthy are they?
		Palmetto, Summer: 3-5.
	   McCartney, C. 1985b. The orchids of Everglades National Park: part 1. American
		Orchid Society Bulletin 54(3): 265-276.
	   McCartney, C. 1985c. The orchids of Everglades National Park: part 2. American
		Orchid Society Bulletin 54(4): 440-448.
	   McCartney, C. 1991. Stalking the elusive Basiphyllaea corallicola, part 1. The
		Florida Orchidist 34 (3): 136-145, 156-157.
	   McCartney, C. 1992a. Orchids of south Florida's pine rocklands. Fairchild Tropical
		Garden Bulletin 47 (April): 12-33.
	   McCartney, C. 1992b. Stalking the elusive Basiphyllaea corallicola, part 2. The
		Florida Orchidist 34 (4): 195-211.
	   McCartney, C. 1993. A new name for Florida�s other Maxillaria. The Florida
		Orchidist, November: 25-29.
	   McCartney, C. 1997. Mrs. Britton's shadow witch. Palmetto, Spring: 10-11.
	   McCartney, R.B., K. Wurdack, and J. H. Moore. 1989. The genus Lindera in
		Florida. The Palmetto, Summer: 3-8.
	   McDaniel, S. 1968. Harperocallis, a new genus of the Liliaceae from Florida. Journal
		of Arnold Arboretum 49: 35-40.
	   McDaniel, S. 1971. The genus Sarracenia (Sarraceniaceae). Bulletin Number 9. Tall
		Timbers Research Station, Tallahassee, Florida.
	   Medley, M.E. 1990. Triphora T. Nuttall: three birds orchids. Accepted for publication
		in Flora of North America, Vol 11, Liliopsida except Poaceae. Forthcoming.
	   Menges, E.S. 1992. Habitat preferences and response to disturbance for Dicerandra
		frutescens, a Lake Wales Ridge, Florida, endemic plant. Bulletin of the Torrey
		Botanical Club 119(3): 303-313.
	   Menges, E.S., D. Gordon, and R. Dolan. 1996. Demography, breeding system, and
		genetics of Nolina brittoniana. Florida Division of Forestry, Tallahassee, Fl.
	   Menges, E.S. and N. Kohfeldt. 1995. Life history strategies of Florida scrub plants
		in relation to fire. Bulletin of Torrey Botanical Club 122: 282-297.
	   Menges, E.S., and J. Kimmich. 1996. Microhabitat and time-since-fire: effects on
		demography of Eryngium cuneifolium (Apiaceae), a Florida scrub endemic plant.
		American Journal of Botany 83(2): 185-191.
	   Menges, E.S., P.J. McIntyre, M.S. Finer, E Goss, and R. Yahr. 1999. Microhabitat of
		the narrow Florida scrub endemic Dicerandra christmanii, with comparisons to
		its congener D. frutescens. Journal of the Torrey Botanical Society 126(1): 24-31.
	   Mesler, M.R. 1974. Natural history of Ophioglossum palmatum in south Florida.
		American Fern Journal 64(2): 33-39.
	   Minno, M.C. 1997. Phenology, pollination, and distribution of the Okeechobee
		gourd (Cucurbita okeechobeensis) along the St. Johns River, Florida. U.S. Fish
		and Wildlife Service, Jacksonville, Florida.
	   Minno, M.C. and M. Minno. 1995. Status and habitat requirements of the endan-gered
		Okeechobee gourd along the middle St. Johns River, Florida. U.S. Fish and
		Wildlife Service, Jacksonville, Florida.
	   Monachino, J. and E.C. Leonard. 1959. A new species of Justicia from Florida.
		Rhodora 61(727): 183-187.
	   Moore, B.J. 1968. The macrolichen flora of Florida. The Bryologist 71(3): 161-266.
	   Muenchow, G. 1993. A survey of Liatris provincialis. Unpublished report to the
		Florida Natural Areas Inventory, Tallahassee, Florida.
	   Musselman, L.J. 1972. Root parasitism of Macranthera flammea and Tomanthera
		auriculata (Scrophulariaceae). Journal of Elisha Mitchell Scientific Society 88(2):
		58-60.
	   Musselman, L.J. and W.F. Mann. 1977. Host plants of some Rhinanthoideae
		(Scrophulariaceae) of eastern North America. Plant Systematics and Evolution
		127: 45-53.
	   Musselman, L.J. and W.F. Mann. 1978. Root parasites of southern forests. U.S.
		Department of Agriculture, Forest Service, General Technical Report SO-20.
		Southern Forest Experiment Station, Alexandria, Louisiana.
	   Nauman, C.E. 1986. The increasing rarity of Florida's ferns. Florida Naturalist 59(4):
		2-4.
	   NMFS (National Marine Fisheries Service). 2000. Recovery plan for Johnson's
		seagrass (Halophila johnsonii). Prepared by the Johnson's Seagrass Recovery
		Team, the National Marine Fisheries Service, Silver Springs, Maryland.
	   Negron-Ortiz, V. 1998. Reproductive biology of a rare cactus, Opuntia spinosissima
		(Cactaceae), in the Florida Keys: why is seed set very low? Sexual Plant
		Reproduction 11: 208-212.
	   Negron-Ortiz, V. and R.J. Hickey. 1996.The genus Ernodea in the Caribbean Basin,
		II, morphological analyses and systematics. Systematic Botany 21(3): 445-458.
	   Nelson, G. 1994. The trees of Florida. Pineapple Press, Inc., Sarasota, Florida.
	   Nelson, G. 1996. The shrubs and woody vines of Florida. Pineapple Press, Inc.,
		Sarasota, Florida.
	   Nelson, G. 2000. The ferns of Florida. Pineapple Press, Inc., Sarasota, Florida.
	   Nesom, G.L. and V.M. Bates. 1984. Re-evaluations of intraspecific taxonomy in
		Polygonella (Polygonaceae). Brittonia 36: 37-44.
	   Nesom, G.L. 1994 [1995]. Review of the taxonomy of Aster sensu lato (Asteraceae:
		Astereae), emphasizing the New World species. Phytologia 77(3):141-297.
		O'Brien, J.J. 1994. Research on south Florida Galactia (Fabaceae). Plant Conservation
		8(1).
	   Ogden, E.C. 1943. Broad-leaved species of Potamogeton of North America north of
		Mexico. Rhodora 45:192.
	   Orzell, S.L. and E.L. Bridges. 1993. Eriocaulon nigrobracteatum (Eriocaulaceae), a
		new species from the Florida panhandle, with a characterization of its poor fen
		habitat. Phytologia 74(2): 104-124.
	   Ostertag, R. and E.S. Menges. 1994. Patterns of reproductive effort with time since
		last fire in Florida scrub plants. Journal of Vegetation Science 5:303-310.
	   Parker, E.S. and S.B. Jones, Jr. 1975. A systematic study of the genus Balduina
		(Compositae, Heliantheae). Brittonia 27: 355-361.
	   Patrick, T.S. 1986. The trilliums of eastern North America: unpublished account.
		Georgia Natural Heritage Program, Social Circle, Georgia.
	   Patrick, T.S., J.R. Allison, and G.A. Krakow. 1995. Protected plants of Georgia.
		Georgia Department of Natural Resources, Natural Heritage Program. Social
		Circle, Georgia.
	   Patterson, J. and G. Stevenson. 1977. Native trees of the Bahamas. Published by the
		authors, Hope Town, Abaco, Bahamas.
	   Pennington, T.D. 1990. Sapotaceae. Flora Neotropica Monograph 52: 1-770.
	   Perdue, R.E., Jr. 1957. Synopsis of Rudbeckia subgenus Rudbeckia. Rhodora 59
		(708): 293-299.
	   Perdue, R.E., Jr. 1962. Two new varieties and a new combination in Rudbeckia.
		Rhodora 64: 328-29.
	   Price, M.G. 1983. Pecluma, a new tropical American fern genus. American Fern
		Journal 73: 109-116.
	   Quintana-Ascencio, P.F., and E.S. Menges. 1996. Inferring metapopulation dynamics
		from patch-level incidence of Florida scrub plants. Conservation Biology
		10:1210-1219.
	   Quintana-Ascencio, P.F. and E. S. Menges. 2000. Competitive abilities of three
		narrowly endemic plant species in experimental neighborhoods along a fire
		gradient. American Journal of Botany 87: 690-699.
	   Quintana-Ascencio, P.F. and M. Morales-Hern'ndez. 1997. Fire-mediated effects of
		shrubs, lichens and herbs on the demography of Hypericum cumulicola in patchy
		Florida scrub. Oecologia 112(2): 263-71.
	   Quintana-Ascencio, P.F., R.W. Dolan, and E. S. Menges. 1998. Hypericum
		cumulicola demography in occupied and unoccupied Florida scrub patches with
		different time-since-fire. Journal of Ecology 86: 640-651.
	   Race, T. 1998. Update on Ziziphus celata: the persistent species. Plant Conservation
		8(2): 1.
	   Radford, A.E., H.E. Ahles, and C.R. Bell. 1968. Manual of the vascular flora of the
		Carolinas. University of North Carolina Press, Chapel Hill, North Carolina.
	   Rae, J.G. 1995. Aspects of the population and reproductive ecology of the endan-gered
		fragrant prickly-apple cactus [Cereus eriophorus var. fragrans (Small) L.
		Benson]. Castanea 60(3): 255-269.
	   Reed, P.B. and A. Cruz. 1997. National list of vascular plant species that occur in
		wetlands. U.S. Fish and Wildlife Service, National Wetlands Inventory Center,
		St. Petersburg, Florida.
	   Remus, J. 1979. Status of two endangered Florida species of Chamaesyce
		(Euphorbiaceae). Florida Scientist 42(3): 130-137.
	   Robertson, K.R. 1971. The Linaceae in the southeastern United States. Journal of
		the Arnold Arboretum 52: 649 - 665.
	   Rogers, C.M. 1963. Yellow flowered species of Linum in eastern North America.
		Brittonia 15: 97-122.
	   Rogers, C.M. 1968. A reassessment of Linum rigidum and L. carteri (Linaceae) in
		Florida. Sida 3(4): 209-210.
	   Rogers, G.K. 1982. The Stemonaceae in the southeastern United States. Journal of
		the Arnold Arboretum 63: 327-336.
	   Rogers, G. 1988. Spigelia gentianoides: a species on the brink of extinction. The
		Center for Plant Conservation 3(3): 1,8.
	   Sanders, R.W. 1987. Identity of Lantana depressa and L. ovatifolia (Verbenaceae) of
		Florida and the Bahamas. Systematic Botany 12(1): 44-60.
	   Schnell, D.E. 1976. Carnivorous plants of the United States and Canada. John F.
		Blair, Winston-Salem, North Carolina.
	   Schnell, D.E. 1977. Infra-specific variation in Sarracenia rubra Walt.: some
		observations. Castanea 42: 149-170.
	   Schnell, D.E. 1979. Sarracenia rubra Walter ssp. gulfensis: a new subspecies.
		Castanea 44: 217-223.
	   Schultz, G.E. and A.F. Johnson. 1997. Rhododendron chapmanii: 1997 census of
		populations in Gadsden, Gulf, and Liberty counties, Florida. Florida Natural
		Areas Inventory, Tallahassee, Florida.
	   Schwartz, M.W. and S.M. Hermann. 1993a. The continuing population decline of
		Torreya taxifolia Arn. Bulletin of the Torrey Botanical Club 120(3): 275-286.
	   Schwartz, M.W. and S.M. Hermann. 1993b. The population ecology of Torreya
		taxifolia: habitat evaluation, fire ecology, and genetic variability. Nongame
		Wildlife Program, Florida Game and Freshwater Fish Commission, Tallahassees.
	   Semple, J.C. 1978. A new species endemic to west Florida: Chrysopsis godfreyi
		(Compositae-Asteraceae). Canadian Journal of Botany 56: 2092-2096.
	   Semple, J.C. 1981. A revision of the goldenaster genus Chrysopsis (Nutt.) Ell. Nom.
		Cons. (Compositae-Asteraceae). Rhodora 83(835): 323-384.
	   Shinner, L.H. 1962. Synopsis of Conradina (Labiatae). Sida 1:84-88.
	   Small, J.K. 1917. The tree cacti of the Florida Keys. Journal of the New York
		Botanical Garden 18:199-203.
	   Small, J.K. 1920. Harrisia fragrans. In: Britton, N.L. and J.N. Rose. The Cactaceae.
		pp. 149-150. Dover Publishing Company, Inc. New York.
	   Small, J.K. 1926a. Deeringothamnus pulchellus. Addisonia 11: 33-34.
	   Small, J.K. 1926b. A new pawpaw from Florida. Torreya 26:56.
	   Small, J.K. 1926c. A new butterfly pea from Florida (Clitoria fragrans). Torreya
		26:56-57.
	   Small, J.K. 1926d. A new bellflower from Florida. Torreya 26:35-36
	   Small, J.K. 1930a. Consolea corallicola, Florida semaphore cactus. Addisonia 15: 25.
	   Small, J.K. 1930b. The Okeechobee gourd. Journal of New York Botanical Garden
		31: 10-14.
	   Small, J.K. 1931a. Bartram's Ixia coelestina rediscovered. Journal of New York
		Botanical Garden 32: 155-161.
	   Small, J.K. 1931b. Celestial lilies. Journal of the New York Botanical Garden 32:
		260-269.
	   Small, J.K. 1931c. The wild pepper plants of continental United States. Journal of
		New York Botanical Garden 31: 210-217.
	   Small, J.K. 1933. Manual of the southeastern flora. Publ. by the author, New York.
	   Small, J.K. 1934. Jacquemontia reclinata: dune-jacquemontia, native of southern
		Florida and West Indies. Addisonia 18: 35-36.
	   Small, J.K. 1935. Chronicle of the cacti of eastern North America. Journal of the
		New York Botanical Garden 36: 1-11, 25-36.
	   Small, J.K. 1938. Ferns of the southeastern United States. Facsimile edition, 1964.
		Hafner Publishing Company, New York.
	   Smith, E.B. 1976. A biosystematic survey of Coreopsis in eastern United States and
		Canada. Sida 6(3): 123-215.
	   Smith, G.L. and M. Darst. 1994. A new species of Hymenocallis (Amaryllidaceae) in
		the Florida panhandle. Novon 4: 396-399.
	   Smith, G.L. and W.S. Flory. 1989. (Abstract). Re-establishment of Hymenocallis
		henryae Traub. ASB Bull. 36: 126.
	   Smith, G.L. and W.S. Flory. 1990. Studies on Hymenocallis henryae
		(Amaryllidaceae). Brittonia 42(3): 212-220.
	   Smith, G.L. and W.S. Flory. 1995. Systematic treatment of Hymenocallis for "Flora
		of North America." Unpublished manuscript.
	   Smith, G.L. and J. de N. Henry. 1999. Hymenocallis henryae, a rare endemic of the
		Florida Panhandle. Herbertia 54: 110-116.
	   Smith, I. 1991. Element stewardship abstract: Parnassia caroliniana. North Carolina
		Department of Environment, Health, and Natural Resources, Division of Parks
		and Recreation. Raleigh, North Carolina.
	   Smith, I. 1994. Element stewardship abstract: Balduina atropurpurea. North
		Carolina Department of Environment, Health, and Natural Resources, Division
		of Parks and Recreation. Raleigh, North Carolina.
	   Smith, R.R. and D.B. Ward. 1976. Taxonomy of the genus Polygala, series
		Decurrentes (Polygalaceae). Sida 6(4): 284-310.
	   Sorrie, B.A. 1992. Lindera subcoriacea element stewardship abstract. The Nature
		Conservancy, Arlington, Virginia.
	   Sorrie, B.A. 1993. Pteroglossaspis ecristata element stewardship abstract. The
		Nature Conservancy, Arlington, Virginia.
	   Stevenson, G.B. 1969. Trees of the Everglades National Park and the Florida Keys.
		Banyan Books, Miami, Florida.
	   Tanner, G.W. and R.A. Miller. 1995. Ecology of Bartram's ixia (Calydorea
		coelestina). Department of Wildlife Ecology and Conservation, University of
		Florida, Gainesville, Florida.
	   Tatje, B.E. 1980a. Status survey for Rhipsalis baccifera. U.S. Fish and Wildlife
		Service, Atlanta, Georgia.
	   Tatje, B.E. 1980b. Status survey for Spiranthes lanceolata var. paludicola. U.S. Fish
		and Wildlife Service, Atlanta, Georgia.
	   Taylor, W.K. 1998. Florida wildflowers in their natural communities. University
		Press of Florida, Gainesville, Florida.
	   Taylor, W.K. 1992. The guide to Florida wildflowers. Taylor Publishing Company,
		Dallas, Texas.
	   TNC. 1995. Element stewardship abstract for Nolina brittoniana - Britton's bear
		grass. The Nature Conservancy, Arlington, Virginia.
	   Tobe, J.D., K.C. Burks, R.W. Cantrell, M.A. Garland, M.E. Sweeney, D.W. Hall, P.
		Wallace, G. Anglin, G. Nelson, J.R. Cooper, B. Bickner, K. Gilbert, N. Aymond,
		K. Greenwood, N. Raymond. 1998. Florida wetland plants: an identification
		manual. Department of Environmental Protection, Tallahassee, Fl.
	   Tomlinson, P.B. 1980. The biology of trees native to tropical Florida. Harvard
		University Printing Office, Allston, Massachusetts.
	   Tryon, R. 1960. A review of the genus Dennstaedtia in America. Contributions,
		Gray Herbarium 187: 23-52.
	   Umber, R.E. 1979. The genus Glandularia (Verbenaceae) in North America.
		Systematic Botany 4(1): 72-102.
	   USFWS. 1980. Status report on Hartwrightia floridana. U.S. Fish and Wildlife
		Service, Atlanta, Georgia.
	   USFWS. 1983a. Harper's beauty recovery plan. U.S. Fish and Wildlife Service.
		Atlanta, Georgia.
	   USFWS. 1983b. Recovery plan for Chapman's rhododendron, Rhododendron
		chapmanii A. Gray. U.S. Fish and Wildlife Service, Atlanta, Georgia.
	   USFWS. 1983c. Status report on Balduina atropurpurea. U.S. Fish and Wildlife
		Service, Atlanta, Georgia.
	   USFWS. 1986a. Florida torreya (Torreya taxifolia) recovery plan. U.S. Fish and
		Wildlife Service, Atlanta, Georgia.
	   USFWS. 1986b. Recovery plan for three Florida mints. U.S. Fish and Wildlife
		Service, Atlanta, Georgia.
	   USFWS. 1988. Florida goldenaster recovery plan. U.S. Fish and Wildlife Service,
		Atlanta, Georgia.
	   USFWS. 1993a. Endangered and threatened wildlife and plants: endangered or
		threatened status for five Florida plants [including Pinguicula ionantha]. Federal
		Register 58(131): 37422-37442.
	   USFWS. 1993b. Recovery plan for Brooksville bellflower (Campanula robinsiae)
		and Cooley's water-willow (Justicia cooleyi). U.S. Fish and Wildlife Service,
		Jacksonville, Florida.
	   USFWS. 1993c. Warea amplexifolia recovery plan. U.S. Fish and Wildlife Service,
		Atlanta, Georgia.
	   USFWS. 1994a. Recovery plan for Apalachicola rosemary (Conradina glabra). U.S.
		Fish and Wildlife Service, Atlanta, Georgia.
	   USFWS. 1994b. Recovery plan for Etonia rosemary (Conradina etoniah). U.S. Fish
		and Wildlife Service, Atlanta, Georgia.
	   USFWS. 1994c. Recovery plan for four plants of the lower Apalachicola Region,
		Florida: Euphorbia telephioides (telephus spurge), Macbridea alba (white birds-in-
		a-nest), Pinguicula ionantha (Godfrey's butterwort), and Scutellaria floridana
		(Florida skullcap). U.S. Fish and Wildlife Service, Atlanta, Georgia.
	   USFWS. 1995. American chaffseed (Schwalbea americana) recovery plan. U.S. Fish
		and Wildlife Service, Hadley, Massachusetts.
	   USFWS. 1996. Recovery plan for nineteen Florida scrub species and high pineland
		plant species. U.S. Fish and Wildlife Service, Atlanta, Georgia.
	   USFWS. 1998. Multi-species recovery plan for the threatened and endangered
		species of South Florida. Vol. 1: the species. Technical/Agency Draft, U.S. Fish
		and Wildlife Service, Vero Beach, Florida.
	   Virnstein, R.W., L.J. Morris, J.D. Miller, and R. Miller-Myers. 1997. Distribution
		and abundance of Halophila johnsonii in the Indian River Lagoon. Technical
		Memorandum #24. St. John's River Water Management District, Palatka, Fl.
	   Wagner, W.H., Jr. 1966. Two new species of ferns from the United States. American
		Fern Journal 56:3-17.
	   Walters, T.W. and D.S. Decker-Walters. 1993. Systematics of the endangered
		Okeechobee gourd, Cucurbita okeechobeensis (Cucurbitaceae). Systematic
		Botany 18(2): 175-187.
	   Ward, D.B. 1977. Keys to the flora of Florida:2, Paronychia (Caryophyllaceae).
		Phytologia 36: 414-418.
	   Ward, D.B. 1978. Keys to the flora of Florida:7, Campanulaceae. Florida Agricul-tural
		Experiment Station Journal Series No. 964. Department of Botany,
		Agricultural Experiment Station, University of Florida, Gainesville, Florida.
	   Ward, D.B. 1979. Rare and endangered biota of Florida: Vol. 5 plants. University
		Presses of Florida, Gainesville, Florida.
	   Watson, L.E. and J.R. Estes. 1990. A biosystematic and phenetic analysis of morph-ological
		variation in Marshallia (Asteraceae). Systematic Botany 15: 403-414.
	   WCMC. 1998. Guaiacum sanctum. Tree Conservation Database. Available on the
		internet at http://www.wcmc.org.uk. World Conservation Monitoring Centre,
		Cambridge, United Kingdom.
	   Webster, G.L. 1967. The genera of Euphorbiaceae in the southeastern United States.
		Journal of the Arnold Arboretum 48: 303.
	   Webster, G.L. 1970. A revision of Phyllanthus (Euphorbiaceae) in the continental
		United States. Brittonia 22: 44-76.
	   Weekley, C., T. Race, and D. Hardin. 1999. Saving Florida ziziphus: recovery of a
		rare Lake Wales Ridge endemic. The Palmetto 19 (2): 9-10, 20.
	   Whetstone, R.D. 1984. Notes on Croomia pauciflora (Stemonaceae). Rhodora 86:
		131-137.
	   Wiard, L.A. 1987. An introduction to the orchids of Mexico. Comstock Publishing
		Associates, Cornell University Press, Ithaca, New York.
	   Wilbur, R.L. 1974. A new species of Lechea (Cistaceae) from peninsular Florida.
		Rhodora: 76: 478-482.
	   Wilbur, R.L. and H.S. Daoud. 1961. The genus Lechea (Cistaceae) in the southeast-ern
		United States. Rhodora 63: 103-118.
	   Wilhelm, G.S. and R.H. Mohlenbrock. 1986. The rediscovery of Potamogeton
		floridanus Small (Potamogetonaceae). Sida 11(3): 340-346.
	   Williams, M.J. 1998. Search for Campanula robinsiae at Burns Prairie Site,
		Hernando County, Florida. Florida Natural Areas Inventory, Tallahassee, Florida.
	   Wofford, B.E. 1983. A new Lindera (Lauraceae) from North America. Journal of the
		Arnold Arboretum 64: 325-331.
	   Wunderlin, R.P. 1982. Endangered and threatened plant status survey: Celtis pallida
		Torrey. U.S. Fish and Wildlife Service, Atlanta, Georgia.
	   Wunderlin, R.P. 1983. Endangered and threatened plant status survey: Spigelia
		loganioides (Torrey and Gray ex Endl) A. DC. U.S. Fish and Wildlife Service,
		Jacksonville, Florida.
	   Wunderlin, R.P. 1998. Guide to the vascular plants of Florida. University Presses of
		Florida, Gainesville, Florida.
	   Wunderlin, R.P. and B.F. Hansen. 2000a. Atlas of Florida Vascular Plants. Available
		on the internet at http://www.plantatlas.usf.edu. Institute for Systematic Botany.
		University of South Florida, Tampa, Florida.
	   Wunderlin, R.P. and B.F. Hansen. 2000b. Flora of Florida, Vol. 1: Pteridophytes and
		Gymnosperms. University Presses of Florida, Gainesville, Florida.
	   Wunderlin, R.P. and D. Richardson. 1981. Status report on Eryngium cuneifolium.
		U.S. Fish and Wildlife Service, Endangered Species Office, Region 4, Atlanta,
		Georgia.
	   Wunderlin, R.P., D. Richardson, and B. Hansen. 1980a. Status report on Illicium
		parviflorum. U.S. Fish and Wildlife Service, Endangered Species Office, Region
		4, Atlanta, Georgia.
	   Wunderlin, R.P., D. Richardson, and B. Hansen. 1980b. Status report on Vicia
		ocalensis. U.S. Fish and Wildlife Service, Endangered Species Office, Region 4,
		Atlanta, Georgia.
	   Wunderlin, R.P., D. Richardson, and B. Hansen. 1980c. Status report on
		Monotropsis reynoldsiae. U.S. Fish and Wildlife Service, Endangered Species
		Office, Region 4, Atlanta, Georgia.
	   Wunderlin, R.P., D. Richardson, and B. Hansen. 1981a. Status report on Chrysopsis
		floridana. U.S. Fish and Wildlife Service, Jacksonville, Florida.
	   Wunderlin, R.P., D. Richardson, and B. Hansen. 1981b. Status report on Polygala
		lewtonii. U.S. Fish and Wildlife Service, Endangered Species Office, Region 4,
		Atlanta, Georgia.
	   Yahr, R. 1997. Recolonization and re-introduction of Cladonia perforata Evans, an
		endangered lichen at Eglin Air Force Base, Florida. Florida Division of Forestry,
		Tallahassee, Florida.