are to be sought within. Several others re- 

 stricted to Florida are grouped in the second 

 region, Florida. 



Ozark chinkapin, Castanea ozarkensis Ashe. 

 Scattered in mountains and hills of Ozark and 

 and Ouachita Mountains. Southern Missouri (5 

 counties including Mark Twain National For- 

 est) ; northern, central, and western Arkansas 

 (noted from 15 counties, Ozark and Ouachita 

 National Forests) ; and eastern Oklahoma (8 

 counties, Ouachita National Forest) . Perhaps it 

 is the only tree species endemic to the Ozark 

 Mountain region (Little 1971b, map 27). Not 

 rare but classed as endangered because of its 

 susceptibility to the chestnut blight disease 

 caused by an introduced parasitic fungus (En- 

 dothia parasitica) . This species from mountains 

 in 3 States probably would be classed better as 

 threatened. The disease has not caused the re- 

 related American chestnut (Castanea dentata 

 (Marsh.) Borkh.) to become extinct or to be 

 listed as endangered. Control measures would 

 not be practicable. 



American smoketree, Cotinus obovatus Raf. 

 (Little 1971b, map 29). Rare and local, moun- 

 tains of southern Tennessee, northern Alabama, 

 southwestern Missouri, Arkansas, and eastern 

 Oklahoma. Also common on Edwards Plateau, 

 central Texas, and at one locality in Kentucky, 

 perhaps introduced. Missouri : Mark Twain 

 National Forest, within range, recorded from 

 Stone, Taney, Ozark, and Douglas Counties. 

 Arkansas: Ozark National Forest, including 

 Blanchard Springs Caverns area of Sylamore 

 Ranger District, St. Francis National Forest, 

 Stone County (Browne 1974), and Henry R. 

 Koen Experimental Forest, Newton County. 



Corkwood, Leitneria floridana Chapm. Rare 

 and local, added to the list of proposed threat- 

 ened species. Coastal plain in 17 counties of 

 5 States: southeastern Georgia, northwestern 

 Florida, southeastern Texas, eastern Arkansas, 

 and southeastern Missouri (Channell and Wood 

 1962). Recorded from lower part of Apalachi- 

 cola River Valley in Franklin and Gulf Counties, 

 northwestern Florida, apparently a few miles 

 outside the southwestern extension of Apalachi- 

 cola National Forest in northwestern Franklin 

 County and to be sought within. This shrub or 

 small tree with very lightweight wood is so 

 distinct from all other plants that it is in a 

 separate family, Leitneriaceae. 



Pinckneya, Pinckneya pubens Michx. (P. 

 bracteata Raf.). Rare, and scattered, proposed 

 as threatened. Coastal plain of extreme southern 

 South Carolina (Beaufort County), southern 

 Georgia (many counties from Schreven south- 



east to Randolph and southward), and north- 

 eastern to northwestern Florida (several coun- 

 ties from Nassau to Volusia and west to Gulf 

 and Jackson). In northwestern Florida within 

 Apalachicola National Forest, which coincides 

 with the range in Leon, Wakulla, and Liberty 

 Counties. At Orange Springs, Marion County, 

 adjacent to Ocala National Forest and to be 

 sought within. "One of the most spectacularly 

 beautiful" small trees in northern Florida in 

 flower, because of the greatly expanded rose- 

 pink elliptic calyx lobes of some flowers (Kurz 

 and Godfrey 1962). 



Allegheny plum, Prunus alleghaniensis Por- 

 ter. Shrub or small tree local and scattered in 

 Appalachian Mountains, proposed as threatened. 

 Mainly from central Pennsylvania (7 counties 

 from Clearfield and Centre southward) to east- 

 ern West Virginia (6 counties south to Mon- 

 roe) . Reported from mountains of western Vir- 

 ginia (Rockbridge County) and northeastern 

 Tennessee (Grainger County). Also rare in 

 southern Connecticut (3 counties). West Vir- 

 ginia : Monongahela National Forest, Pendleton 

 County (Clarkson 1966). 



Georgia oak, Quercus georgiana M. A. Curtis. 

 Rare and local, mostly in Piedmont, proposed as 

 threatened. South Carolina, Spartanburg and 

 Kershaw Counties ; northern and western Geor- 

 gia, noted from 7 counties (Jones 1974) ; and 

 Alabama (2 counties). To be sought within 

 these National Forests: South Carolina: Sum- 

 ter; Georgia, Oconee; and Alabama, Talladega. 

 In Georgia, Wilbur H. Duncan (personal com- 

 munication) reports that this species is very 

 uncommon but abundant in its outcropping 

 habitat and is reproducing well, thus not to be 

 proposed as threatened. 



Oglethorpe oak, Quercus oglethovpensis Dun- 

 can. Rare and local in the Piedmont of north- 

 eastern Georgia and western South Carolina 

 (Duncan 1950, fig. 1), proposed as threatened. 

 "Many places" in Georgia within an area about 

 25 miles long and 10 miles wide across Ogle- 

 thorpe, Elbert, and Wilkes Counties. Also nearby 

 in South Carolina within an area of similar size 

 in 4 counties (McCormick, Edgefield, Green- 

 wood, and Saluda) . Apparently within the Sum- 

 ter National Forest, whose area extends across 

 the first three named counties of South Caro- 

 lina. According to Wilbur H. Duncan (personal 

 communication), who named this species in 

 1940, about nine-tenths of the habitat has been 

 destroyed because of intensive silvicultural 

 practices. 



Kelsey locust, Robinia kelseyi Hutchins. An 

 ornamental shrub or small tree with pink 



