Marine Chlorophyta of Hawaii, II — Gilbert 
487 
Fig. 3. Cladophora doty ana sp. n. A, Basal cells; B, a nearly complete young plant; C, portion of the 
lower part of a mature plant; D, E, terminal portions of a mature plant; F, a very young plant. 
wind-blown appearance, large diameter stiff 
filaments, extremely long primary cells, and 
frequent widely divaricate to retrorse condi- 
tion of the primary branches. None of the 
plants in several collections has exceeded 4 cm 
in height even though growth appeared to be 
luxurious. It differs from C. fuliginosa Kiitzing 
in that branching in C. dotyana is often tri- or 
quadrichotomous in the lower two-thirds of 
the plant, the upper cells are not strongly arcu- 
ate, and the tip cells are relatively much shorter 
for their diameter than in the former species. 
Perhaps C. dotyana most closely resembles C. 
prolifera (Roth) Kiitzing and C. pellucida 
(Huds. ) Kiitzing. C. dotyana is much shorter, 
more closely branched, and lacks the fasciculate 
grouping of the ultimate branchlets of C. pellu- 
cida. Furthermore, the proposed species does 
