114 FOREST TREES OF NORTH AMERICA. 



203. Cordia Boissieri, a. De Candolle, 

 Prodr. uc, 47a. Torrey, Bot. Mex. Boundary Survey, 135. Cooper in Smithsonian Rep. 1860, 442. Gray, Syn. Fl. N. America, ii', 180. 



Texas, valley of the Rio Grande, westward to New Mexico and southward into Mexico. 



A small tree, rarely 8 meters in height, with a trunk 0.12 to 0.15 meter in diameter, or more often reduced to a 

 low shrub. 



Wood light, rather soft, close-grained, compact, containing many small scattered open ducts; medullary 

 rays very numerous, tliin, conspicuous; color, dark brown, the sap-wood liglit brown; speciQc gravity, 0.6790; 

 ash, 3.53. 



204.^Bourreria Havanensis, Mlers, 



Bot Contrib. ii, 238. Gray, Syn. Fl. N. America, ii', 181. 



Ehretia Havanensis^ Willdenow in Rcemer & Scholtes, Syst. iv, 805. Humboldt, Bonpland Sc Knnth, Not. Gen. &. Spec, 

 vii, 206. A. De Candolle, Prodr. ix, 508. 



Ehretia tomentosa, Lamarck, ni. i, 425. Poiret, Suppl. ii, 1. Sprengel, Syst. i, 648. Dietrich, Syn. i, 630. 



B. tomentosa, Don, Miller's Diet, iv, 390. 



B. reourva, Miers, Bot. Contrib. ii, 238. 



B. orata, Miers, Bot. Contrib. ii, 238. 



Ehretia Botirreria, Chapman, Fl. S. States, 329 [not Linnajus].- Vasey, Cat. Forest Trees, 19. 



B. tomentosa, var. Havanensis, Grisebach, FL British West Indies, 482. 



STRONG BAKK. 



Semi-tropical Florida, southern keys (Key Largo, Elliott's Key, etc.) ; in the West Indies. 

 A small tree, 10 or, exceptionally, 15 meters (Key Largo, Curtiss) in height, with a trunk 0.20 to 0.25 meter in 

 diameter; the large specimens generally hollow and defective. 



A form (generally shrubby in Florida) with scabrous or hispidulons leaves is 



var. radula. Gray, Syn. Fl. N. America, ii', 181. 



Ehretia radula, Poiret, Suppl. ii, 2.-Dietrich, Syn. i, 630. A. De Candolle, Prodr. ix, 506. Chapman, Fl. S. States, 329. 



B. radula, Don, Miller's Diet, iv, 390. Chamisso in Linnsea, viii, 120. Miers, Bot. Contrib. ii, 238. 



Cordia Floridana, Nuttall, Sylva, iii, 83, t. 107; 2 ed. ii, 147, t. 107. Cooper in Smithsonian Rep. 1858, 265. 



Wood heavy, very hard, strong, very close-grained, compact, susceptible of a beautiful polish ; medullary rays 

 numerous, obscure; color, brown streaked with orange, the sap-wood not distinguishable; specific gravity, 0.8073; 

 ash, 2.79. 



205. Ehretia elliptica, De CandoUe, 



Prodr. ix, 503. Torrey, Bot. Mex. Boundary Survey, 136. Cooper in Smithsonian Rep. 1858, 266. Miers, Bot. Contrib. ii, 228, t. 85. 

 Gray, Syn. Fl. N. America, ii', 181. 



KNACK AWAY. ANAQUA. 



Texas, Oori)us Christi to New Braunfels {Mohr), and southward to the valley of the lower Eio Grande. 



A tree 10 to 15 meters in height, with a trunk sometimes 0.50 meter in diameter ; generally along borders of 

 streams, in rich loam, and reaching its greatest development between the Guadalupe and Nueces rivers, 50 to 76 

 miles from the Gulf coast. 



Wood heavy, hard, not strong, very close-grained, compact, unwedgeable, containing many small open ducts 

 arranged in numerous concentric rings within the layers of annual growth, these marked by several rows of larger 

 ducts; medullary rays numerous, thin; color, light brown, the sap-wood a little lighter; specific gi-avity, 0.6440; 

 ash, 1.31. 



