EXOGENOUS SERIES-NEEDLELEAF WOODS. 



Cypress, Bald Cypress. Taxodium distichum Rich. 

 Nomenclature. (Sudworth ) 



White Cypress (N. C., S. C., Swamp Cypress (La.). 

 Fla., Miss.). Deciduous Cy-L At 



Black Cypress (N. C., S. C, Tex ) 



., Miss. La 

 Tex.). 



Locality. 



South Atlantic and Gulf States, Maryland through Florida to 

 Texas, Mississippi Valley from southern Illinois to the Gulf 

 Occasional m North, as New York. Forms forests in swamps 

 and barrens.* 



Features of Tree. 



Seventy to one hundred and fifty feet in height, four to ten 

 feet in diameter. Knees on roots often hollow in old age. 

 Flat deciduous leaves. 



Color, Appearance, or Grain of Wood. 



Heartwood brownish, sapwood nearly white. Close, straight 

 grain. Frequently pitted by disease. 



Structural Qualities of Wood. 



Light, soft, not strong, durable. Green wood often very heavy. 

 Representative Uses of Wood. 



Carpentry, construction, cooperage, railway ties. 



Weight of Seasoned Wood in Pounds per Cubic Foot. 

 29 (U. S. Forestry Div.).f 



28. 



Modulus of Elasticity. 



1,290,000 (average of 655 tests by U. S. Forestry Div.).f 



1,460,000. 



Modulus of Rupture. 



7900 (average of 655 tests by U. S. Forestry Div.).f 

 9600. 



Remarks. 



Wood commercially divided into " white " and " black " cypress 

 because of differences in age and environment. Fungus dis- 

 ease pits much wood, but stops with felling of trees. J 



*See Trans. Am. Inst. M. E., Vol. XXIX, page 157. 

 f See page 8. 



J Von Schrenk, Contribution No. 14, Shaw School Botany, St. Louis; also U. S, 

 Forestry Circular No. 19. 



