174 



DESCRIPTIVE CATALOGUE 



directly into the pith. Trifling differences in detail between 

 the secondary wood of the roots and the branches are described 

 by Barber, but, on the whole, the secondary wood is identical 

 with the specimens of stems. 



Text-fig. 50.-~Citprcssi>ioxyton vcctense. Barber. Radial section of Barber's 

 type- specimen, showing the pitting of medullary ray-cells, m. \ tbe 

 longitudinal resin-containing wood-parenchyma, rj>. ; and the resin- 

 containing cells of raj, rm. 



