71 



Pores (transverse section) very n;merous, (.17 ma. in 

 diameter) , rouxid, Oi.;en, and distributed singly throughout 

 the v/ood, rarely in small groups or short radial rows of 

 contiguous vessels. Vessel Walls (longitudinal section) 

 with niimerous large bordered pits; those between contiguous 

 vessels often scalariform bordered, those in contact with 

 wood-parenchyma and pith-ray cells with either bordered 

 pits or bordered and simple, the latter sometimes very 

 large. Ens of vessel segments usually v/holly absorbed, 

 sometimes both simple and scalariform perforations ^-resent 

 in one and the same specimen, ./ood fibers about 1.154 mm. 

 long, moderately thick walls, v;ith relatively large cell 

 cavities and few slit-like j-its. V/ood-parenchyma fibers 

 scantly developed; they surround vessels and are arranged 

 in irregular inconspicuous, tangential lines, and may be 

 recognized by their thin walls and large cell cavities. 

 Pith rays very numerous, narrow, barely visible u^ider a 

 hand lens on a smooth transverse section, usually only one 

 or two rows of cells wide and from a fev; tc many cells high, 



Uistributicn, common names and uses 



Kiercnymfa alchorneoides has a very wide area of dis- 

 tribution, extending from South Brazil to western Panama . 

 V/hile, however, it has been reported from various points 

 in the Anazonas basin, it, is net known to grow in the in- 

 tervening of Venezuela and Colombia. In Panama, v-.'here it 

 was first indicated by Seemann, it has been collected at 

 several points along the Pacific coast azid is by no means 

 a rare tree. The Tu^.i-guarani names are uricana and uru - 

 Gurana, (meaning spurious anatto) the Panaman ones x^anta- 

 no and ^^apatsro . The wood is hard and fine grained, and 

 wherever at hand, is extei.sively used in civil and naval 

 construction as well as for fine joiner-v/ork. 



