FLORAS OF THE WORLD 13 



United States. — Of the 49 geographical units (48 States plus the 

 District of Columbia) , 7 (Arizona, Delaware, Florida, Idaho, Oregon, 

 South Carolina, and Virginia 31 ) have never had a separate flora, and 

 4 others (Georgia in 1849; Kentucky, 1853; Louisiana, 1852; Massa- 

 chusetts, 1835) have not had a published flora for around a century. 

 Of the remaining 38, some 28 possess State lists that are more or less 

 up to date: Alabama, 1901; Arkansas, 1891, with additions to 1926; 

 California, 1925; Colorado, 1906; Connecticut, 1910, with additions 

 to 1930; District of Columbia, 1919, with additions to 1930; Indiana, 

 1900, with additions to 1935; Iowa, 1933; Kansas, 1893; Michigan, 

 1904, with additions to 1908; Mississippi, 1921; Missouri, 1935; 

 Montana, 1900, with additions to 1905; Nebraska, 1936; Nevada, 

 1925 (but so completely combined with that of Utah that it is a 

 regional rather than a State flora); New Jersey, 1890; New Mexico, 

 1915; New York, 1924; North Dakota, 1918; Ohio, 1932, with addi- 

 tions to 1939; Oklahoma, 1930; Pennsylvania, 1903; South Dakota, 

 1932; Texas, 1938; Utah, 1925 (see remark under Nevada) ; Vermont, 

 1937; Washington, 1906; West Virginia, 1913, with additions to 

 1936. Of these 28 State floras, 18 were published or were brought 

 approximately up to date by supplements within the last 20 years 

 (that is, subsequent to 1919) . 32 The published floras of the remaining 

 10 States cannot be regarded as at all adequately reflecting existing 

 knowledge (Illinois, 1876; Maine, 1892, with additions to 1897; Mary- 

 land, 1910 ; Minnesota, 1884, with additions to 1887 ; New Hampshire, 

 1874; North Carolina, 1899; Rhode Island, 1920, an unreliable list; 

 Tennessee, 1901; Wisconsin, 1883; Wyoming, 1896). A severe cri- 

 tique might reduce from 28 to not more than about 13 the number of 

 States with moderately satisfactory floras. 



One or more local floras covering larger or smaller areas are cited 

 in this list for all the 48 States except Nevada. California, Indiana, 

 Iowa, Massachusetts, Michigan, New York, Pennsylvania, and Wash- 

 ington are particularly well supplied with them. Insofar as the identi- 

 fication of vascular plants is concerned, all the States are covered by 

 local or regional floras with the exception of Arizona, for which only 

 Gray's unfinished Synoptical Flora, now more than 40 years old, is 

 available ; two floras of the State, however, are in an advanced state of 

 preparation. 



West Indies. — Good modern floras are available of the Bahama 

 Islands (Britton and Millspaugh, 1920), Hispaniola (Urban, 1920- 

 21), Jamaica (Fawcett and Rendle, 1910 — ; not yet finished), and 

 Puerto Rico (Britton and Wilson, 1923-30; also Urban, 1903-11), 

 all of which except those by Urban are descriptive floras. In the 

 Lesser Antilles about half the islands are the subject of lists or 

 descriptive floras; in order from north to south, Anegada, American 



31 Gronovius' Flora Vh-ginica, although of great historical importance, can hardly be 

 regarded as a real flora of the State, as it was based on the collections of a single botanist 

 made in only a part of the whole area, gives almost no specific localities, and, moreover, uses 

 the old polynomial nomenclature, although its second edition (1762) was published after 

 the Species Plantarum. 



32 One more flora has been published, too late for inclusion in this List, bringing the 

 total of more modern State floras to 19. Gates, F. C. annotated list of the plants of 



KANSAS: FERNS AND FLOWERING PLANTS (COVer title, FLORA OF KANSAS). 266 p. maps. 



Topeka, 1940. (Publication of Agricultural Experiment Station, Kansas State College of 

 Agriculture and Applied Science.) — In addition, a very full State flora of Indiana and an 

 unannotated check list of the flora of West Virginia have appeared in 1940. Deam, C. C. 

 flora of Indiana. 1236 p. illus. (inch maps). Indianapolis, 1940. (Publication of De- 

 partment of Conservation, Division of Forestry, Indiana.) — Core. E. L. a catalogue of 

 the vascular plants of west Virginia. Castanea 5 : 31-73. 1940. 



