JOIRXAL OF FORESTRY 



b* Pores distinct without lens. 



a" Lines of wood parencliynia conspicuous on all sec- 

 tions; usually li^ht-colorcd hut sometimes reddish; 

 concentric and apparently limiting growth rings; 

 sometimes rather closely spaced. Rays on radial sur- 

 face distinct but not decidedly darker than fibers; 

 occasional exceptions. Ripple-marks often present 

 throughout (about 50 per inch) ; distinct. Gum ducts 

 not uncommon, producing prominent dark-red streaks. 

 White deposits common in vessels of dense wood. 

 Wood variable from light and soft to hard and 

 heavy. Color variable from maroon to reddish or 

 pinkish brown; occasionally yellowish. True Ma- 

 HOC..\.\Y, Caob.^, Havwoou: Szvietciiia iiiahagoni, S. 

 macrophyllum (Meliaceae). 

 b^ Lines of wood parenchyma visible without lens but 

 not prominent on any section ; mostly dark reddish. 

 Rays very tine and not always distinct on cross sec- 

 tion : prominent on radial surface and darker than 

 fibers. Woods moderately dense; fairly uniform. 

 Color red-brown or chocolate, 

 o" Interior of growth' rings marked with numerous 

 wavy or broken tangential lines of parenchyma. 

 Rays showing plainly on tangential surface as 

 short uniform lines less than .03 inch long; more 

 or less storied, producing ripple-marks (about 

 50 per inch), at least locally.- Gum ducts not 

 known to occur. Sapeli, "African Mahoc.any" : 

 lintaiidropJiragma candolei (IMeliacese). 

 />'' Interior of growth rings normally without par- 

 encliyma lines. Rays showing ratlier indistinctly 

 on tangential surface as lines of varying length, 

 many of them .06 incli or more ; not storied. No 

 ripple-marks. "DemErara Maho(;anv," Crai?- 

 woon, Car.\pa, Andiroka: Carapa iitiiaiieiisis. 

 et al. (Meliaceae): "Africax Mahocanv": C. 

 gogo. 

 b' Wood parenchyma not in tangential or concentric lines. 

 Growth rings, if present, due to differences in density of 

 wood. 

 a* Rays on tangential surface showing conspicuously as nar- 

 row lines of var\ing length, many of them from .06 to 

 .10 inch long: never storied; very dark and prominent 

 on radial surface. Ripple-marks present (about 60 per 

 inch) due to storied arrangement of vessel segments and 

 wood fibers. Vessel segments uniform in lengtli and visi- 

 ble without lens ; apparently lined with reddish gum and 

 sometimes filled with it. Rows of gum ducts occasionally 

 present and very conspicuous. Wood light and soft but 

 firm; rather coarse-textured. Color reddish-brown with 



