204 



Plants — Our Living Resources 



Picea silchensis, a mcniher of the 

 pine family. Pinaceae. 



The fern PhiuwrophU'lvu luiriculata. 



Tlie feni Clenilis slocmei. 



The tem Cwnitis subinarvinaUs. 



keys to genera and discussions about species 

 and their distributions in the Southeast, is about 

 80% finished. The latest complete flora is 

 Small's (1933) manual. The Manual of the 

 Vascular Flora of the Carolinas (Radford et al. 

 1968) is a standard and reliable reference. A 

 flora of Florida and atlas of the vascular plants 

 of Florida are under way (R.P. Wunderlin. 

 University of South Florida, personal communi- 

 cation). In addition, extensive computerized 

 data bases on distribution, literatuie. and 

 nomenclature of Florida plants exist at the 

 University of South Florida. 



In Floiida. the specimen coverage is incom- 

 plete in sparsely populated areas (e.g., several 

 eastern Panhandle counties and northeastern 

 counties). At least one new species per year is 

 described from Florida and these mostly have 

 limited distributions and are in imperiled habi- 

 tats. 



Herbaria in the southeastern United States 

 have formed a consortium (Southeastern 

 Regional Floral Information System) to com- 

 puterize specimen records in all southeastern 

 herbaria. The information from this project is 

 available online at the University of Alabama. 



Invasion of weedy species is one of the most 

 serious threats to native vegetation in the south- 

 eastern United States. Much better documenta- 

 tion of the occurrence and spread of these 

 species is needed to control these invaders. 



Collecting and Monitoring 



Active collecting programs document and 

 monitor changes in distribution of native and 

 introduced species. Introduced plants and plant 

 migrations often affect the distribution and 

 health of native plants. At present, it can take as 

 long as 20 years after an introduction to collect 

 and record the species in the literature. 



Long-term care of these national collections 

 is vital; many regional herbaria no longer have 

 curatorial support, and some have been or are in 

 danger of being abandoned by their institutions, 

 which will limit resources and information for 

 studies. 



References 



Albee. B.. L.M. Shultz. and S. Goodrich. 1988. Atlas of the 

 vascular plants of Utah. Utah Museum of Natural 

 History. Salt Lake City. 670 pp. 



Correll. D.S.. and M.C. Johnston. 1970. Manual of the vas- 

 cular plants of Texas. Texas Research Foundation. 

 Renner, 188 pp. 



Cronquist. A., A.H. Holmgren. N.H. Holmgren. J.L. Reveal. 

 P.K. Holmgren, and R.C. Barneby. 1972-94+. 

 Intermountain flora: vascular plants of the Intermountain 

 West. U.S.A. fi+ vols. Hafner Publishing Co.. New York. 

 (Vol. 5-Composite. Columbia University Press.) 



Davis, R. 1952. Flora of Idaho. W.C. Brown. Dubuque. lA. 

 828 pp. 



Femald, M.L. 1950. Gray's manual of botany. 8th ed. 

 American Book Co.. New York. 



Flora of North America Editonal Committee. 1993. Flora of 

 Nonh America; north of Mexico. Vols. 1 and 2. Oxford 

 University Press. New York. 



Gleason. H.A.. and A. Cronquist. 1991. Manual of vascular 

 plants of northeastern United States and adjacent 

 Canada. 2nd ed. New York Botanical Garden. New York. 

 910 pp. 



Great Plams Flora Association. 1977. Atlas of the flora of 

 the Great Plains. University Press of Kansas. Lawrence. 

 60(1 pp. 



Great Plains Flora Association. 1986. Flora of the Great 

 Plams. University Press of Kansas, Lawrence. 1.392 pp. 



Hartman. R.L. 1990. New taxa described from the conter- 

 minous LInited States. 1975-1989. Unpublished report. 



Hickman. J., ed. 1993. The Jepson manual: higher plants of 

 California. University of California. Berkeley. 1.400 pp. 



Hitchcock, A.S., and A. Chase. 1950. Manual of the grasses 

 of the United States. 2 vols. Dover Publications, New 

 York. 



Hitchcock. C.L.. A. Cronquist, M. Ownbey. and J.W, 

 Thompson. 1955-69. Vascular plants of the Pacific 

 Northwest. 5 vols. University of Washington Press, 

 Seattle. 



Hulten. E. 1968. Flora of Akiska and neighboring territo- 

 ries: a manual of the vascular plants. Stanford University 

 Press. Stanford. CA. 1 .008 pp. 



Kartesz, J.T. 1987. A flora of Nevada. Ph.D. dissertation. 

 University of Nevada. Reno. 



Kartesz, J.T 1 994. A synonymized checklist of the vascular 

 flora of the United States, Canada, and Greenland. 2 vols. 

 Timber Press, Portland, OR. 



Little. E.L.. Jr. 1971. Atlas of United States trees. Vol. 1. 

 Conifers and important hardwoods. U.S.D.A. 

 Miscellaneous Publ. 1 146. Washington, DC. 



Martin. W.C, and C.R. Hutchins. 1980-81. A flora of New 

 Mexico. 2 vols. J. Cramer. Vaduz. NM. 



Mason, C.T., Jr. 1975. Apacheria chiricahuensis: a new 

 genus and species from Arizona. Madrono 23:105-108. 



Mitchell. R.S. 1986. A checklist of New York State plants. 

 New York State Museum Bull. 458. 272 pp. 



New York Flora Association. 1990. Preliminary vouchcred 

 atlas of New York State flora. New York State Museum 

 Institute. Albany. 496 pp. 



Peck, M.E. 1961. A manual of the higher plants of Oregon. 

 Binfords & Mort. Portland. OR. 936 pp. 



Piper. C.V. 1906. Flora of the state of Washington. 

 Contributions from the United States National 

 Herbanum 11:1-637. 



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. 1,183 pp. 



Radford. A.E., J.W. Hardin. J.R. Massey, E.L. Core, and 

 L.S. Radford, eds. 1980. Vascular flora of the southeast- 

 em United States. 3 vols. University of North Carolina 

 Press. Chapel Hill. 



Rhoads, A.F, and W.M. Klein, Jr 1993. The vascular flora 

 of Pennsylvania: annotated checklist and atlas. American 

 Philosophical Society, Philadelphia. 636 pp. 



Seymour. FC. 1982. The flora of New England: a manual 

 for the identification of all vascular plants including ferns 

 and fern allies growing without cultivation in New 

 England. Phytologia Memoirs 5. Moldenke. Plainfield. 

 NJ. 611 pp. 



Shevock, J.R., B. Ertter. and D.W. Taylor. 1992. Neviusia 

 cliftonii (Rosaceae: Kerrieae). an intriguing new relict 

 species from California. Novon 2:285-289. 



Small, J.K. 1933. Manual of the southeastern flora. 

 University of North Carolina Press, Chapel Hill. 1.554 pp. 



Soil Conservation Service. 1982. National list of scientific 

 plant names. 2 vols. U.S. Department of Agriculture. 

 Washington, DC. 



The Nature Conservancy. 1994. The conservation of biolog- 

 ical diversity in the Great Lakes ecosystem: issues and 

 opportunities. (Unpublished report.) 



