N. E. Steven.'^— Peinfied Palms. 



Ul 



in cross section and flattened where it joins the vascular 

 portion. The phloem elements were nowhere preserved. 

 Most of the bundles in the sections so far cut are of transi- 

 tion regions, one of which is shown in fig\ 13. 



The fundamental tissue of this species is rather special- 

 ized. Lilve that of P. ceUidosuni Knowlton it has large 

 intercellular spaces (fig. 15) but scattered among the 

 typical parenchymatous cells, usually in groups of three 

 to ten, are much thicker "stone" cells (fig. 14). These 



Fig. 14. — P. cannoni, portion of the fundamental tissue which contains 

 many stone cells (thick walled) among the typical parenchJ^natous cells 

 (thinner walled) ; several intercellular spaces are also shown. X 45. 



Fig. 15. — P. cannoni, portion of the fundamental tissue close to that 

 sho"v\Ti in figure 14, but containing no stone cells. In this figure the cells are 

 outlined in stipple so that the large intercellular spaces are readily distin- 

 guished. X 45. 



stone cells vary considerably in size, in number associated 

 in a single group, and thickness of walls, while some seem 

 to be pitted. 



Of hitherto described species the one under considera- 

 tion seems most closely to resemble P. remotum Stenzel 

 from the Oligocene^ near Washington, Mississippi. Like 



'^ Berry, E. W. The Flora of the Catahoula Sandstone, in Shorter eontri- 

 hutions to general geology. U. S. Geol. Survey, Prof. Paper 98., pp. 227 

 to 252, 1917. 



