99 



Desoription of the wood 



Sapwood thin and almost v;hite; heartwood slightly darker. 

 '.Yood very hard, heavy, strong, tough, very close and straight- 

 grained, easily worked, taking a very good polish. 2he 

 annual growth of rings liisible only under high power of the 

 microscope. 



Pores { transverse- section) very numerous, small (.02 mm. 

 in diameter), round, polygonal, or slightly elongated radially, 

 ftpen both in sapwood and heartv/ood, and arranged singly or 

 more often in pairs or even in distinct radial rows of from 

 3 to 6 or more. Vessel walls 4i«mgttttddiaal aeetiorr) uni- 

 formly and densely ^^itted with numerous exceedingly small 

 round oordered pits, ^nd v/alls of the vessel segments 

 wholly absorbed. ,'/ood fibers about 1.55 mm. long v/ith re- 

 latively thick walls and small cell cavities, the ^its very 

 small and slit-like. ,;ood parenchyma not very abundantly 

 developed, occurring chiefly in the neighborhcod of vessels 

 and pith rays, pith rays numercjus and inccnSi^icuous, chiefly 

 only one cell wide, occasionally two cells, and frca 10 to 

 20 or more cells high.) 



/ 



Distribution, common na.aes ani uses. 



'j]his Si-ecies is known from Ecuador, Gclombia, Venezuela 

 and the eastern part of Central America and is there of usual 

 occurrence in the v/armer lower belt. It is called pie Ie_^- 

 loma (dove's foot) in the northern j^art of Golombia'i but no 

 cu;amcn name has been recorded for Panama, where the v/ood 

 does not seem to be used to any extent, except occasionally 

 for fuel. 



The Panaman Incense-Tree 



luelania roussoviae Pittier, Contrib. U.S. llat. Herb. 18: 



163. 1916. 



xJescrij.>tion of the tree 

 A deciduous tree, 10 tc 25 m. high, ujj to 50 cm, in dia- 



