XXXVI. LIST OF FRESH -WATER ALGAE COL- 

 LECTED IN MINNESOTA DURING 1805. 



Josephine E. Tiluen. 



Of the appended list, which is continued from page 237 of this 

 publication, the greater number of the plants were sent into the 

 laboratory by outside collectors. It is interesting to note the 

 occurrence of Aphanizomenon Jios aquae and Clathrocystis aerug- 

 inosa in different parts of the state as a probable result of the 

 prolonged drouth experienced during the past summer. These 

 plants produce the effect known as " wasser-bluthe" or the 

 "breaking of the meres." The former plant was also collected 

 by Professor J. C Arthur, at Waterville, Minnesota, in 1882. 



Twenty-four of the species here given are new to the state. 



202. Chara fragilis Desv. in Loiseleur Nat. Fl. Fr. 157. 1810. 



Lake Calhoun, Hennepin county. August 4, 1895. 



203. Hormiscia subtilis (Kg.) De-Toni, var. snbtilissima 



Rabenh. Fl. Eur. Algar. 3 : 365. 1868. 

 In water brought in from a well and left standing in a 

 corked bottle all winter, Mankato. February 29, 

 1896. Coll. U. 0. Cox. 



204. Chaetophora pisiformis (Roth) Ag. Syst. Alg. 27. 1824. 



In spring, Long lake, Hennepin county. September 

 5, 1895. Coll. B. T. Shaver and J. E. T. 



205. Stigeoclonium protensum (Dillw.) Kg. var. subspinosum 



(Kg.) Rabenh. Krypt. Flor. v. Sachs. 267. 1863. 

 In tub, Long lake, Hennepin county. September 5. 

 1895. Coll. B. T. Shaver and J. E. T. 



206. Stigeocloiiium flagelliferum Kg. Phyc. Germ. 198. 



1845. 

 In fountain, Kenwood, Minneapolis. August 3, 1895. 



