214 First Annual Report 
Pterosiphonia bipinnata (P. and R.) Falk. 
Epiphytie on Nereocystis. 
Pterosiphonia baileyi (Harvy.) Falk. 
Occasional on roeks of low tidal zone. 
Strebdocladia camptoclada (Mont.) Falk 
(Figures 120 and 121) 
Abundant as an epiphyte on other alge of the whole tidal zone. 
Cystocarps .8 mm. in diameter. 
Figure 128. Callithamnion rupicolum f. pygmaeum Collins. 
Strebdocladia sp. 
(Figure 122 
Abundant on rocks and shells of the lower tidal zone. Of this 
plant, Dr. Setchell says: ‘‘Possibly a Strebdocladia; perhaps, how- 
ever, a Polysiphonia. I have had it before, but as yet have not sat- 
isfactorily placed it.’’ 
