map for the contiguous United States (U.S. National Arboretum 

 1965) was reproduced as overlay 4 of Volume 1. 



Natural geographic distribution of each species is shown as a 

 brown-shaded pattern of fine dots on the black-and-white base map. 

 Outlying stations or outliers are shown similarly by large or small 

 dots according to size. However, the smallest areas, such as a grove 

 with only a few trees, must be enlarged to a dot, representing 

 several miles in diameter, to be visible on a map. Width of strips, 

 such as along coasts, has been broadened slightly. A few localities 

 beyond the main range, where a species is known to have occurred 

 naturally within historic times but is now extinct, are designated 

 by X- Arrows have been added to direct attention to isolated dots. 



Presence or absence is shown, but not abundance or density. 

 Commercial range, formerly indicated on some old maps, is not 

 designated. 



The species maps do not indicate forest types, or forest cover 

 types, which are shown in overlay 9, Major Forest Types, in Volume 

 1. Most tree species are not confined to a single forest type and have 

 ranges somewhat beyond. However, many species are characteristic 

 of and largely within certain broad types. The comprehensive 

 classification of forest cover types prepared by the Society of 

 American Foresters (1954) lists species but lacks maps. 



A few tree species have spread widely by planting or other in- 

 troductions and have become so thoroughly naturalized that the 

 limits of their original ranges are in doubt. Examples in South 

 Florida are Solanum erianthum, mullein nightshade, and Cordia 

 sebestena, Geiger-tree. 



TREE NAMES 



Scientific and common names follow the Forest Service Check 

 List (Little 1953), except for minor revision of nomenclature. 

 Differences in scientific names, including a few additions and 

 deletions, are given below, the accepted name cited first. 



The first 11 changes below are repeated from Volume 4, because 

 ranges in Florida are affected. The first 2 involve the substitution 

 of an older specific name. The third is an addition of a shrub reach- 

 ing tree size. 



Avicennia germinans (L.) L., black-mangrove, replaces A. nitida 

 Jacq. 



Sabal minor (Jacq.) Pers., dwarf palmetto, formerly omitted as 

 a shrub, includes 5. louisiana (Darby) Bomhard, Louisiana pal- 

 metto, a name applied to plants with trunks. 



Styrax americana Lam., American snowbell, becomes a small 

 tree. 



The next 7 names involve omission or deletion, mostly through 

 union of 2 species. The second of 2 species, both accepted in the 

 1953 Check List, has been united and reduced to a synonym or 

 variety of the first. 



Cyrilla racemiflora L., swamp cyrilla, has as varieties or 

 synonyms C. parvifolia Raf., littleleaf cyrilla, and C. arida Small, 

 Florida cyrilla. 



Osmanthus americanus (L.) Benth. & Hook, f., devilwood, has as 

 a variety O. americanus var. megacarpus (Small) P. S. Green 

 {O. megacarpus (Small) Small), bigfruit osmanthus, of Florida. 



Per sea borbonia (L.) Spreng., redbay, includes as a variety P. 

 bordonia var. humilis (Nash) Kopp {P. humilis Nash), silkbay, 

 and as a synonym P. littoralis Small, shorebay, both of Florida. 



Quercus prinoides Willd., dwarf chinkapin oak, which also has 

 been united to include as a variety Q. muehlenbergii Engelm., 



chinkapin oak, is omitted here as a clump-forming shrub, usually 

 low but rarely treelike. 



Sambucus canadensis L., American elder, includes S. simpsonii 

 Rehd., Florida elder. 



Sapindus saponaria L., wingleaf soapberry, Florida including 

 Florida Keys and southeastern Georgia, apparently introduced 

 northward, has as a synonym S. marginatum Willd., Florida soap- 

 berry. 



Tilia caroliniana Mill., Carolina basswood, includes as a 

 synonym T. floridana Small, Florida basswood. 



The remaining changes below concern Florida trees mostly not 

 represented in previous volumes of the Atlas. Two additional 

 species of Acacia have been discovered on the Florida Keys, where 

 they are very rare. Eighteen other changes involve adoption of 

 older names or segregates and union of names as varieties or 

 synonyms. 



Acacia choriophylla Benth., cinnecord, is added as a very rare 

 native tree. One tree found in 1967 on northern Key Largo 

 (Alexander 1968) may have been destroyed by a fire in 1975. 

 Another was located in 1977. 



Acacia macracantha Humb. & Bonpl. ex Willd., long-spine acacia, 

 is added as a native tree. Fifteen plants, apparently native, were 

 found on Ramrod Key (near Big Pine Key) in 1963 (Ward 1967) . 

 Very rare and also in cultivation as an ornamental and apparently 

 persistent and escaping. 



Acoelorrhaphe wrightii (Griseb. & H. Wendl.) H. Wendl., 

 paurotis or paurotis-palm, replaces Paurotis wrightii (Griseb. & H. 

 Wendl.) Britton. 



Amphitecna latifolia (Mill.) A. H. Gentry, black-calabash, re- 

 places Enallagma latifolia (Mill.) Small. 



Bourreria radula (Poir.) G. Don, rough strongbark replaces B. 

 revoluta H.B.K. 



Cereus robinii (Lem. ) L. Benson, key tree-cactus, with 2 varieties 

 replaces 2 species of Cephalocereus. Var. robinii, key tree-cactus 

 (typical), of Lower Florida Keys, replaces Cephalocereus keyensis 

 Britton. Var. deeringii (Small) L. Benson, Deering tree-cactus, of 

 Upper Florida Keys, replaces Cephalocereus deeringii Small. 



Colubrina elliptica (Sw.) Briz. & Stern, soldierwood, of Upper 

 Florida Keys, replaces C. reclinata (L'Her.) Brongn. 



Dodonaea viscosa (L.) Jacq., hopbush, of Florida including 

 Lower Florida Keys, also southern Arizona, has D. microcarpa 

 Small as a synonym of a variety. 



Eugenia foetida Pers., boxleaf stopper, replaces E. myrtoides 

 Poir., as well as E. buxifolia (Sw.) Willd., a later homonym. A 

 synonym is E. anthera Small, Smalls eugenia. 



Ficus citrifolia Mill., shortleaf fig, is an older name for F. 

 laevigata Vahl. 



Guapira discolor (Spreng.) Little, longleaf blolly, includes as 

 synonyms these variations based upon leaf shape and size: Torrubia 

 bracei Britton, T. globosa Small, and T. longifolia (Heimerl) 

 Britton. 



Lysiloma latisiliquum (L.) Benth., Bahama lysiloma, replaces 

 L. bahamense Benth. 



Manilkara bahamensis (Baker) Lam & Meeuse, wild-dilly, re- 

 places Achras emarginata (L.) Little. 



Mastichodendron foetidissimum (Jacq.) Cronq., false-mastic, 

 replaces Sideroxylon foetidissimum Jacq. 



