[413] THE 



Bulbochaete intermedia De Bar. 



In a freshwater pond near Seldovia, Cook Inlet. 



This species according to Wolle is generally distributed throughout 

 the United States. Wittrock records it from north Greenland. 



Bulbochaete nordstedtii Wittr. 



In a freshwater pond near Seldovia, Cook Inlet. 



This species has also been reported by Wittrock from Greenland. 

 I have also found it from Norwich, Conn. 



Bulbochaete nana Wittr. 



In a freshwater pond, Shumagin Islands. 



Reported from north Greenland. 



The form which Wolle refers to this species belongs, it seems to 

 me, according to his figures, to B. monile. 



Bulbochaete insignis Pringsh. 



Wolle reports this species as occurring in many lakes in New 

 Jersey. 



Family CLADOPHORACE^E. 



Trentepohlia iolithus (L.) Wallr. 



Orca, on rocks at 1,000 feet elevation (Trelease). 



Forming an orange or brick-red coating on rocks; filaments di- 

 chotomously or irregularly branched; cells 14-20/4 thick in the middle, 

 much constricted at the ends, i^ to 2 times as long as broad, thick- 

 walled. This is the Veilchenstein of the Germans. It grows on rocks, 

 requires little moisture and can withstand prolonged drouth. When 

 moistened it has a distinct violet odor. 



Urospora penicilliformis (Roth) Aresch. 

 Phycotheca Boreali -Americana, No. 18. 



Forming a light green coating on cliffs, Kukak Bay (349) . 



Frond 20-60 /* in diameter ; cells from one-third to three diameters 

 in length, usually constricted at the nodes. 



Chaetomorpha cannabina (Aresch.) Kjellm. 



Annette Island (46), filaments light green, more curled than usual, 

 generally 80-110 fj. in diameter; Cook Inlet, near Seldovia (417), less 

 curled, and filaments coarser than in the previous specimens. 



Filaments light green, 80-150 y. in diameter; cells I to 4 times as 

 long as broad. 



Chaetomorpha melagonium forma rupincola (Aresch.) Kjellm. 

 Yakutat Bay (243). 



