42 FOREST TREES OF NORTH AMERICA. 



NAKED WOOD. 



Semi-tropical Florida, Umbrella Key, on the north end of Key Largo, and sparingly on the small islands south 

 of Elliott's Key ; through the West Indies. 



One of the largest trees of the region, deciduous, 12 to 18 meters in height, with a trunk 0.60 to 1.25 meter in 

 diameter; reaching its greatest development within the United States on Umbrella Key, here forming a dense 

 forest. 



Wood heavy, hard, very strong, brittle, close-grained, compact, satiny, susceptible of a good polish, containing 

 many small open ducts ; medullary rays numerous, thin; color, dark brown tinged with yellow, the sap-wood light 

 yellow ; specific gravity, 0.8208 ; ash, 1.75. 



"The trunk attains a size of over 1 meter and is most extraordinary. When 0.152 meter thick it becomes 

 furrowed, and the furrows and ridges multiply and extend in all directions; trunks 0.75 to 1 meter in diameter 

 appear like a mass of braided serpents. On small trunks the bark breaks up into flakes which curl up and drop 

 off. Between the ridges where the bark persists the edges of dozens of papery layers may be seen " (Gurtiss in let). 



SAPINDACEJL 



50. ./Esculus glabra, Willdenow, 



Enum. 405. Pursh, Fl. Am. Sept. i, 255. Nnttall, Genera, i, 241. De Candolle, Prodr. i, 597. Torrey, Fl. U. S. 384 ; Compend. Fl. 

 N. States, 164. Guimpel, Otto & Hayne, Abb. Holz. 28, t. 24. Hayne, Dend. Fl. 44. Sprengel, Syst. ii, 166. Don, Miller's Diet, 

 i, 652. Beck, Bot. 65. London, Arboretum, i, 467, f. 133. Torrey & Gray, Fl. N. America, i, 251. Dietrich, Syn. ii, 1225. Eaton 

 & Wright, Bot. 115. Walpers, Rep. i, 424. Gray, Genera, ii, 207, 1. 176, 177; Manuel N. States, 5 ed. 118. Cooper in Smithsonian 

 Rep. 1858, 251. Chapman, Fl. S. States, 79. Wood, 01. Book, 288; Bot. & Fl. 85. Engelmann in Trans. Am. Phil. Soc. new ser. 

 xii, 187. Koch, Dendrologie, i, 508. Vasey, Cat. Forest Trees, 9. Ridgway in Proc. U. S. Nat. Mus. 1882, 61. 



M. pallida, Willdenow, Euum. 406. Nuttall, Genera, i, 242. De Candolle, Prodr. i, 597. Guimpel, Otto & Hayne, Abb. 

 Holz. 29, t. 25. Sprengel, Syst. ii, 166. Don, Miller's Diet, i, 650. Eaton, Manual, Oed. 6. Liudley, Bot. Reg. xxiv, 

 t. 51. London, Arboretum, i, 463, f. 134. 



JR. ecjlinata, Muhlenberg, Cat. 38. 



JH. Ohioensis, Michaux f. Hist. Arb. Am. iii, 242; N. American Sylva, 3 ed. ii, 156, t. 92. Poiret, Suppl. iii, 593. De 

 Caudolle, Prodr. i, 597. Don, Miller's Diet, i, 652. Eaton, Manual, 6 ed. 6. Riddell, Syn. Fl. W. States, 34. Lindley, 

 Bot. Reg. xxiv, 51, t. 51. Nuttall, Sylva, ii, 71 ; 2 ed. ii, 17. 



ME. earned, Guimpel, Otto & Hayne, Abb. Holz. 25, t. 22. Hayne, Dend. Fl. 43. Lindley, Bot. Reg. xiii,t. 1056. Watson, 

 Dend. Brit, ii, t. 121. Don, Miller's Diet, i, 652. Torrey & Gray, Fl. N. America, i, 253. Walpers, Rep. i, 425. 



Pama glabra, Spach in Ann. Sci. Nat. 2 ser. ii, 54 ; Hist. Veg. iii, 23. 



Pavia pallida, Spach in Ann. Sci. Nat. 2 ser. ii, 54 ; Hist. Veg. iii, 23. 



f Pavia carnea, Spach in Ann. Sci. Nat. 2 ser. ii, 54; Hist. Veg. iii, 23. Don in Sweet's Brit. Fl. Gard. 2 ser. t. 301. 



f Pavia Watsoniana, Spach in Ann. Sci. Nat. 2 ser. ii, 54; Hist. Veg. iii, 23. Torrey & Gray, Fl. N. America, i, 253. 



f 2E. Watsoniana,- Dietrich, Syn. ii, 1225. Walpers, Rep. i, 425. 



JE. Hippocastanum, var. Ohioensis, London, Arboretum, i, 467. Browne, Trees of America, 110. 



JE. HippOCOStanum, var. glabra, Loudon, Arboretum, i, 467. Browne, Trees of America, 111. 



JE. Hippocastanum, var. pallida, Loudon, Arboretum, i, 468. Browne, Trees of America, 111. 



OHIO BUCKEYE. FETID BUCKEYE. 



Western slopes of the Alleghany mountains, Pennsylvania to northern Alabama, westward through southern 

 Michigan (rare) to southern Iowa, eastern Kansas to about longitude 97 west, and the Indian territory. 



A small tree, 8 to 15 meters in height, with a trunk 0.30 to O.GO meter in diameter; rich soil along streams and 

 river bottoms, reaching its greatest development in the high valleys of the southern Alleghany mountains. 



Wood light, soft, not strong, close-grained, compact, difficult to split, often blemished by dark lines of decay; 

 medullary rays obscure; color, white, the sap-wood darker; specific gravity, 0.4542; ash, 0.80; largely used in 



