L925] Setchell-Gardner: Melanophyceae 447 



dried material. The colls of the host were much collapsed and did 

 not straighten out when soaked and boiled, hence the details of the 

 species were not so thoroughly worked out as is desirable. The plants 

 penetrate among the cells of the host and seemingly pass all the way 

 through it. Just how much constitutes a single plant cannot at present 

 be made out. 



8. Streblonema irregulare Saunders 



Fronds consisting of irregularly branching prostrate filaments, 

 applied closely to the host plant, from which arise numerous simple 

 or sparingly branched erect filaments 1-2 mm. high, 9-14/* diam., with 

 cells as long or twice as long as broad ; rhizoidal filaments arise from 

 the lower surface of the prostrate filaments and penetrate the host, 

 10-14/x diam.. longer or shorter than the diameter; zoosporangia 

 unknown; gametangia narrowly ellipsoidal, terminal or lateral on 

 the erect filaments, 55-70ju long, 14-18/*, diam. 



Growing on the cysts of N&reocystis Luetkeana. Sitka, Alaska. 



Saunders. Alg. Harriman Exp., 1901, p. 417, pi. 45, fig. 2; Setchell 

 and Gardner. Alg. N.W. Amer, 1903, p. 239. 



We have not had an opportunity to examine the type material of 

 this species, nor have we seen any other material representing the 

 species since its discovery and first publication. 



9. Streblonema minutissimum Saunders 



Fronds composed of short, sparsely branched, creeping filaments, 

 1-2//, diam., ramifying among the cortical filaments of the host, some- 

 times applied to them, and of erect filaments arising from the prostrate 

 filaments in the host, and intermingling with its peripheral filaments; 

 erect filaments once or twice dichotomously branched, bearing above a 

 few short branches which become transformed into uniseriate game- 

 tangia, 20-30^1 long, 3-5/x broad. 



"Growing in the branches of Liebmannia.' n Sitka, Alaska. 



Saunders, Alg. Harriman Exp., 1901, p. 416, pi. 45, fig. 3 ; Setchell 

 and Gardner, Alg. N.W. Amer., 1903, p. 239. 



Nothing further has been learned of this species of Streblonema 

 nor of the host upon which it grew since its discovery at Sitka and 

 publication by Saunders (loo. eit.). We have not seen any of the 

 specimens, but. judging from the figure and deseription, it seems 

 distinct from all other known forms. 



