884 PROFESSOR A. C. SEWARD AND MISS N. BANCROFT ON 
in contact and flattened (figs. 28, 24). Double rows of opposite pits are not infrequent 
(fig. 23), and on some tracheides there is an alternation of double and single pits 
(fig. 22). A few pits occur in single rows, both separate and in contact but not 
flattened, on the tangential walls of summer elements (text-fig. 5, B.). The medullary 
rays vary from 1 cell to 26 cells in depth, though for the most part they are about 
Text-FicurE 5.—A, Stoma of Brachyphyllwmn eathiense sp. nov.; B-F, Cedrowylon Hornet sp. nov. 
8-12 cells deep and always one row in breadth. There are two to four, most fre- 
quently two, simple or faintly bordered and approximately circular pits (text-fig. 5, C) 
on each field;* in a few places we have detected small pits on the horizontal walls 
of the medullary-ray cells (text-fig. 5, EZ) and on the tangential walls (text-fig. 5, F).t 
The xylem-parenchyma appears to be confined to the region of the summer 
* We use this term for the area limited above and below by the walls of the medullary-ray cell and laterally 
by the vertical walls of the tracheides [“ Kreuzfeld,” Gotan (05)]. 
+ Cf, GotHaN (05), p. 43, fig. 76. 
