21-5 Minnesota Algae 



Species not well understood 



C. donnellii 

 M. elongatum 

 M. fertile 

 M. fibrosum 

 M. halos 

 C. lacucola 

 S. obscurus 

 M. pardoxum 

 C. rhizosoleniae 

 M. sejunctum 

 M. turgida 



462. Calothrix Juliana (Meneghini) Bornet and Flahault. Revis. des Nostoc. 



Ann. Sci. Nat. Bot. VII. 3:348. 1886. De Toni. Syll. Algar. 5: 



60s. 1907- 

 Setchell. Notes on some Cyanophyceae of New England. Bull. Torr. 

 Bot. Club. 22: 425. 1895. Collins, Holden and Setchell. Phyc. Bor.-Am. 

 Fasc. 3. 1895. Tilden. American Algae. Century II. no. 163. 1896. Col- 

 lins. The Algae of Jamaica. Proc. Am. Acad. 37: 241. 1901. Brown. Algal 

 periodicity in certain ponds and streams. Bull. Torr. Bot. Club. 35:247. 

 1908. 



Plate XVI, fig. S- 



Filaments scattered or forming an interrupted, olivaceous layer, dense- 

 ly crowded, erect, simple, rigid, often thickened at the base, 10-15 niic. in 

 diameter, 2 mm. in length; sheaths thin, close, not lamellose, colorless; 

 trichomes 9-12.5 mic. in diameter, ending in a long, tapering, fragile hair; 

 cells three times shorter than their diameter; hormogones 4 or S times 

 longer than their diameter. 



United States. (Farlow). Massachusetts. Massopoag Brook, Sharon. 

 (Setchell). Connecticut. Growing on wood and on stones. Trading Cove 

 Brook, Norwich; Quinebaug River, .Lisbon. (Setchell). Forming small iso- 

 lated blackish tufts (1-3 mm. in diameter), on smooth stones in shallow 

 water. Trading Cove Brook, Norwich. September 1892. (Setchell). In- 

 diana. Bloomington. (Brown). California. On stones in stream. Pasa- 

 dena. January 1896. (McClatchie). West Indies. On stones in stream. 

 Roaring River, St. Ann's Bay, Jamaica. March 1893. (Humphrey). 



463. Calothrix confervicola (Roth) Agardh. Syst. Algar. 70. 1824. Bornet 



and Flahault. Revis. des Nostoc. Ann. Sci. Nat. Bot. VII. 3: 349. 



1886. De Toni. Syll. Algar. 5: 606. 1907. 



Harvey. Nereis Boreali-Americana. Part III. 105. 1858. Farlow. List 



Marine Algae United States. Proc. Am. Acad. Arts Sci. 10: 380. 1875. 



Hall. List of the Marine Algae growing in Long Island Sound within 20 



miles of New Haven. Bull. Torr. Bot. Club. 6: 112. 1876. Farlow. Marine 



Algae of New England. 36. pi. i. f. 6. 1881. Pike. Check List of Marine 



