Legends for the Lists of Plant Names 



Symbol (Garrison-Skovlin-Poulton System) 

 Basic five-letter symbols, consisting of the first five letters, 

 are used for the genus. If the name has fewer than five 

 letters, " + " signs are added to make a five-letter symbol. For 

 example, for fir trees, Abies, the symbol is ABIES; for 

 wheatgrasses, Agropyron, the symbol is AGROP; for blue- 

 grasses, Poa. the symbol is POA+ + ; and for maples, Acer, 

 the symbol is ACER + . Tiebreakers are added to the basic 

 five-letter symbol if needed. For example, the symbol 

 CHRYS is the first five letters of several genera — Chrysopsis, 

 Chrysopogon, Chrysothamnm, and Chrysanthemum. The 

 genus symbol for the first one is CHRYS and for the 

 others CHRYS2, CHRYS3, and CHRYS4. 



The symbol for a species is the first two letters of the genus 

 and the first two of the species. For example, the symbol 

 for Kentucky bluegrass, Poa pratensis. is POPR. All other 

 plants having the same four-letter symbol have tiebreakers in 

 numeric sequence, starting with 2. Examples: POPR2, 

 POPR3, and so forth. 



For varieties or subspecies, the first letter of the variety in 

 a trinomial or quadrinomial or of the subspecies in a 

 trinomial is added to the basic four-letter plant name symbol. 

 Example: Piniis ponderosa variety arizoiiica has the five- 

 letter symbol PIPOA. 



Genus/ Species 



The species is indented below the genus, and the infra- 

 species below the species. If the infraspecies is a subspecies, 

 the letter S precedes it. If a variety is assigned to a sub- 

 species, its position in the list reflects that assignment. The 

 letter X precedes the name of a hybrid taxon. Thus, 

 A" AGROELYMUS is a hybrid genus, and the hybrid species 

 Qiiercus X stelloides is represented by "X STELLOIDES" 

 under the genus QUERCUS. Under Eriophoriim is the 

 species angustifoUum; under the species is the subspecies 

 subarticum: and under siiharticum is the variety coloratum. 

 So the full name is the quadrinomial, Eriophorum 

 angustifoUum ssp. subarticum var. coloratum. 



Author 



An asterisk following an author means that the Smithsonian 

 Institution studied the original description fully enough to 

 confirm that it is accurately cited and that it complies with the 

 International Code of Botanical Nomenclature (1978, 

 International Association for Plant Taxonomy, Utrecht, 

 Netherlands) . 



Source Manuals 



Letters, numbers, or symbols in this column correspond to 

 those in parentheses in the following list of publications, 

 which includes all major sources that the consultants used. 

 Sources that are listed but do not have symbols in parentheses 

 are mainly checklists. Numbers to the left of the sources 

 give the regions to which the source applies. 



1-0 Little, E. L., Jr., 1979. Checklist of United 



States trees. U.S. Dept. Agr., Agr. Handb. 541. 

 1,3 (F) Fernald, M. L. 1970. Gray's manual 



of botany, 8th ed. Rev. R. C. RoUins. Van 



Nostrand Reinhold. 

 1, 3 (B) Gleason, H. A. 1963. The new Britton and 



Brown illustrated flora of the northeastern 



United States and adjacent Canada. Hafner 



Publishing. 

 1,3 (G) Gleason, H. A., and Arthur Cronquist. 1963. 



Manual of vascular plants of northeastern 



United States and adjacent Canada. D. Van 



Nostrand. 

 2 (2) Small, J. K. 1933, 1938. Manual of the 



southeastern flora and Ferns of the southeastern 



states. Science Press Printing. 

 2 Thome. R. F. 1954. The vascular plants of 



southwestern Georgia. Am. Midi. Naturalist 



52:257. 

 2 Sharp, A. J., et al. 1956-1960. A preliminary 



checklist of monocots in Tennessee and A 



preliminary checklist of dicots in Tennessee. 



A. J. Sharp. 



2 (C) Radford, A. E., et al. 1968. Manual of the 



vascular flora of the Carolinas. Univ. North 



Carolina. 

 2 Ward, D. B. 1968. Checklist of the vascular 



flora of Florida 1. Univ. Florida Agr. Exp. Sta. 



Bull. 726. 

 2 (L) Long, R. W., and Olga Lakela. 1971. A flora of 



tropical Florida. Univ. Miami. 

 2 Allen, C. M., et al. 1975. A vascular flora of 



St. Helena and West Feliciana Parishes. Univ. 



Southwestern Louisiana. 

 2 Balogh, Pamela. 1976. A vegetational survey 



of Barksdale Air Force Base. U.S. Dept. Air 



Force 2d Civil Engr. Sqdn. 

 2 Lakela, Olga, et al. 1976. Plants of the Tampa 



Bay area, 3d ed. Banyan Books. 



2 Smith, E. B. 1978. An atlas and annotated 

 list of the vascular plants of Arkansas. Edwin 



B. Smith. 



3 (M) Steyermark, J. A. 1963. Flora of Missouri. 



Iowa State Univ. 



