SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 98, NO. 7, PI . 5 



i. Outer surface of mature trunk 

 near the base, the thin surface layer 

 with fine longitudinal grooves less 

 distinct above than where the sur- 

 face was protected by the crusta- 

 ceous lichens, the "bark" broken in 

 the lower part showing the smooth 

 subsurface layer. ( Natural size. ) 



Trunk of Rooseveltia Palm 



_'. Longitudinal sections of the 

 trunk, at the right a radial section 

 showing fine fibers near the surface 

 and coarse compact fibers under- 

 neath; left-hand section with finer 

 fibers, farther up the trunk. ( Natu- 

 ral size. ) 



