836 Yearbook of Agriculture 1949 



2. Heartwood dingy, reddish brown, often with darker streaks. Sapwood moderately 

 wide, usually more than 1 inch. Annual rings not clearly denned. Rays relatively 

 not very distinct. Wood moderately heavy. 



SWEETGUM 



3. Heartwood light grayish brown with reddish tinge. Sapwood more than 1 inch 

 wide. Annual rings clearly defined by a thin, darker reddish-brown layer. Rays 

 very distinct. 



(a) Wood heavy; difficult to cut across the grain. Pith flecks very rare. 



SUGAR MAPLE 

 BLACK MAPLE 



(b) Wood moderately heavy; rather easy to cut across the grain. Pith flecks often 

 abundant. 



SILVER MAPLE 



RED MAPLE 



BIGLEAF MAPLE 



4. Heartwood light yellowish brown with greenish tinge, occasionally purplish. Sap- 

 wood usually more than 1 inch wide. Annual rings clearly defined. Rays fairly 

 distinct. Wood moderately light to moderately heavy. 



YELLOW-POPLAR 



CUCUMBERTREE 



SOUTHERN MAGNOLIA 



5. Heartwood creamy brown. Sapwood wide and not sharply defined from the 

 heartwood. Rays fairly distinct. Wood light. 



BASSWOOD 

 G. Rays not distinctly visible. 



1. Annual rings not clearly divided into a band of soft springwood and denser and 

 darker band of summerwood and, therefore, not conspicuous. 



(a) The heartwood distinctly darker than the sapwood. 

 (ai) Heartwood reddish brown. Wood not cross-grained. 



(a 2 ) Wood heavy to very heavy. Pith flecks very rare. 



YELLOW BIRCH 

 SWEET BIRCH 

 (b 2 ) Wood moderately heavy. Pith flecks common. 



PAPER BIRCH 

 RIVER BIRCH 

 (c 2 ) Wood light. 



(as) Heartwood dark reddish brown. 



BLACK WILLOW 

 (b 3 ) Heartwood light reddish brown. 



WHITE WILLOW 

 (bj) Heartwood grayish brown. 



(a 2 ) Wood cross-grained; moderately light to moderately heavy. 



BLACK TUPELO (BLACKGUM) 

 WATER TUPELO 



(b a ) Wood fairly straight-grained; light. 



COTTONWOOD 



(b) The heartwood light-colored, not distinctly darker than the sapwood. 

 (ai) Wood light in weight; odorless and tasteless. 



(a 2 ) Color yellowish white. 



YELLOW BUCKEYE 

 OHIO BUCKEYE 



(b 2 ) Color plain white, sometimes partly discolored to pale salmon brown 

 near center of tree or around knots. 



QUAKING ASPEN 

 BIGTOOTH ASPEN 

 SOFTWOODS 



(bi) Wood moderately light. Odor of heartwood spicy; color pale brown. 



PORT-ORFORD-CEDAR 



(ci) Wood moderately heavy. Odor of heartwood pungently disagreeable, not 

 spicy; color light canary yellow. 



ALASKA-CEDAR 



2. Annual rings clearly divided into a band of soft springwood and a denser and 

 darker band of summerwood. Although the summerwood may not be pronounced, 

 yet the annual rings are always clearly defined by it. 



(a) Wood resinous, as indicated by exudations of resin, or pitch, especially when 

 heated, the presence of occasional pitch pockets or pitch streaks, or the 



