Pflanzen von Peyssonellia Rosenvingii, wie ich zugebe, ähnlich sind, die 

 ebensogut aber auch ganz anderen Arten von Peyssonellia .... zugehören 

 können tt . 



In Remark on the Hœmatostogon balanicola Strömt'. 1 ) F o si i e in 

 his answer to Schmitz says: „1 admit, that I ought not to have adopted 

 Strömfelt's denomination until better developed specimens of this species 

 are forthcoming , but on the other hand I think, that also the latter 

 [o: H. balanicola] will prove to be identical with the Greenlandic spe- 

 cimen. " 



This is all that is known about the Hæmatostagon balanicola. I have 

 not seen Strömfelt's original specimen and cannot add to the knowledge 

 about this plant, but I think, that Foslie is right in identifying it with 

 P. Rosenvingii. Schmitz's objections do not demonstrate, that H. balanicola 

 is specifically different from P. Rosenvingii; he admits, on the contrary, that 

 the former resembles young specimens of the latter. He only says that 

 the young, sterile specimens of H. balanicola are, as other young and 

 sterile Squamariaceæ, indeterminable, and consequently cannot with cer- 

 tainty be identified w T ith any of the known species of Peyssonellia, but 

 he adds: „Wenn einmal genau festgestellt sein wird, welche Arten der 

 Squamariaceen überhaupt an der Nordküste von Island vorkommen, dann 

 mag es vielleicht möglich sein, mit ziemlicher Wahrscheinlichkeit, oder 

 selbst mit Sicherheit anzugeben, zu welcher Species die jugendlich un- 

 entwickelten und sterilen Exemplaren, die Strömfeit vorlagen, gehörten." 



Although we, at present, do not exactly know the distribution of the 

 Squamariaceæ round Iceland, I think that we know enough to say, that 

 it is a probability almost amounting to certainty, that the plant collected 

 by Strömfeit in N. Icel. and by him named H. balanicola is identical 

 with P. Rosenvingii, which is not rare in N. Icel. and E. Icel. 



E. Icel. Berufjöröur, Seyöisfjöröur. 



N. Icel. Grjötnes (CO.); Hrisey; Skagafjöröur (Strömfeit). 

 NW. Icel. Hrütafjöröur, Bildudalur. 



SW. Icel. Stykkishölmur; Keflavik by Snæfellsjøkull (CO.); Rey- 

 kjavik. 



Rhododermis parasitica Batters, A List of the marine Algæ of Berwick- 

 on-Tweed. 



On the stems of Laminaria hyperborea and different shells. With 

 tetraspores in April — July. 



NW. Icel. Isafjöröur (CO.)/ 

 S W. Icel. Einarslön, Engey. 

 S. Icel. Eyrarbakki. 



l ) La nu ova Notarisia 1896. 



