Cottoniella hawaiiensis — Doty and Wainwright 
233 
FIGURES 2,4,5 8 9 
Figs. 6-9. (6) Indeterminate branch 
apex from lateral view. Central cells not 
shown beyond third cell below apex, 
ventral pericentral cell not shown in low- 
est segment. (7) Cellular details of young 
indeterminate branch. (8) Cellular details 
of mature rhizoid and of an exogenous 
determinate branch basal cell. (9) Out- 
line of mature tetrasporangial stichidium 
which had shed the contents of two 
sporangia. 
