lor 



and so, the former is often found in a projected point while the latter 

 in sheltered places. Fronds of the former are much larger than 

 those of the latter and the branches are much broader. Tetrasporic 

 ramelli are more or less expanded and roundish in G. pacificum, 

 while in G. amansii, linear or linear-oblong. Again, cystocarps of 

 the former are terminated with somewhat expanded apical portions 

 of ramelli and not so long and slender as in the latter. Also in 

 the plant in question both tetrasporic and cystocarpic ramelli are 

 more or less aggregated, while in the plant taken in comparison 

 they are loosely arranged. 



PL. CXXVI. Fig. 1 : tetrasporic frond of Geliduim pacificum 

 Okam. n. sp. in nat. size. Fig. 2 : portion of branch bearing 

 cystocarps, \. Fig. 3 : cystocarps. ^. 



PL. CXXVII, Fig. 9-11. Fig. 9: cross-section of the middle 

 portion of a main branch ; a, cortical layer ; b, infra-cortical, full of 

 hyaline filaments ; c, medullary layer, ^. Fig. 10 : portion of fig. 

 9 magnified ; characters same as fig. 9, ^^. Fig. 11 : tetrasporic 

 ramelli, 12. 



Gelidium pacificum Okam. 



$8 cxxvi jBjjK; fg cxxvii HJ, 9 -u 



: fiS " * =' y 7 n E. M M, ffi m =- n ^, 



T & <* 3 m (Gelidium) / -1451 - H 

 ai -T 9. 



