410 University of California PuUications in Botany [Vol. 7 



Ectocarpus fructuosus sp. nov. 



IMate 45, figures 1-4 



Fntmlihus iloccosis, i)roi"iise et altenie ramosis, usque ad 2.5 cm, 

 altis. jKT lilaincnta copiosa, repentia et comparate brevia affixis: fila- 

 nu'iitis orcctis ])asi repetite furcatis, ramos longos ramulis ordinuiii 

 dunniiii IriuiiKiuc l)r('vil)ns o1)tusis(|Uc ubi(|Uo eircumdantcs prndue- 

 ontibus; ccHuIis liliiiiR'ntorum primariurum orectorum cylindricis 

 usque ad leviter doliiformibus et parte ad dissepimenta constrictis, 

 inforne 18-25/Lt diam., 2-4-plo longioribus quam latis, superne leviter 

 latioribus brevioribusque ; zoosporaugiis iguotis: ofametangiis numer- 

 osis, hite couiois. sessilibus aut 1-3-cellulato pedieellatis, 50-7()/x longis, 

 basi 25-35/A latis. 



Growing on the pneumatocyst of Nereocystis Luetkeana. Moss 

 Beach. San M-Atoo County, California. Type, Gardner, no. 4568 fHerb. 

 Univ. Calif., no. 207000), April. 



Ectocarpus fructuosus comes within the E. confervoides group, but 

 seems amply distinct from any known forms to constitute a species. 

 This species is based upon the character of the branches, viz. ; numerous 

 long branches, producing throughout a great abundance of short, 

 rather blunt ramuli, and upon the very numerous, rather short and 

 blunt, predominatingly sessile gametangia. The species seems to be 

 rare. 



Ectocarpus granulosoides sp. nov. 



Plate 45, figures 7, 8 



Frondibus 2-3 cm. altis. profuse ramosis ; filamentis primariis sub- 

 dichotome ramosis, ramis omnibus basi abrupte attenuatis, inferne 

 eorticulatis ; filamentis secundariis plerumque alternis, partim secun- 

 dis, strietis, longe attenuatis, acutis, non piliferis, ramulis ultimis 

 plerumque secimdis, aeutis; cellulis filamentorum primariorum 70-SOju. 

 diam., 0.5-1-plo longioribus quam latis, filametorum secundariorum 

 30-40/1 diam., 0.3-1-plo longioribus quam latis, ramulorum ultimorum 

 14-20/x diam., 0.3-1 .5-plo longioril)us (|u;im latis, omni])us ad dissey)i- 

 menta leviter constrictis; ehromatophoris numerosis. in cellulis vctusti- 

 oribus discoideis,in cellulis ramulorum irregulariter angulosis; cellulis 

 filamentorum cortieantum 7-lOju, diam.. 3-4-plo longioribus quam latis ; 

 zoosporangiis ignotis; gametangiis in latere superiore ramuhu'um 

 ultimorum pcnultimorumque seeundis, sessilibus, subfusiformibus, 

 asymmetricis, 40-60/i longis, 12-20/1 latis. 



Growing on rocks(?). San Pedro, California. Type, Setchell, 

 no. lloGa, December, 1895. 



The very distinct species we have described under the name of 

 Ectocarpus yranulosoides has the habit of a small E. gramdosus and 



