— 43 — 
lb. Green cells of the branch-leaves in cross section exposed only on the outer 
side or much less on the inner side, triangular or trapezoidal; hyaline cells 
of the branch-leaves bulging more on the inner side. 
Plate XX 
(i, 2, 3, 4, 5 ) Stem-leaves, X 22. (6) Margin of branch-leaf, X 250. (7, 8, 9, 10) Hyaline 
cells from the middle regions of leaves of spreading branches, showing pores on outer side, X 343. 
(n, 12, 13, 14) Portions of cross sections of the leaves of spreading branches, X 400. 
