OF LOWER GREENS AX D PLANTS. 



87 





(nw. 



Text-fig. 2Q.Protopiceoxylon Edimrdsi, sp. nov. A few cells from the 

 radial view of a medullary ray, showing the "abietinean pitting" of 

 their end-walls, mw. No. V. 4850/. 



-V 



Text-fig. 21. Protopiceoxylon Edwardsi, sp. nov. Radial section of the 

 vrood, showing the pits in the tracheids and the medullary ray- 

 cells, with groups of irregular roundish pits on the radial walls, mp. 

 Ko. V. 4859 d. 



