20 Minnesota Algae 



Plate I. fig. 25. 



Plant mass mucous; plants 12 mic. in diameter, associated in families of 

 from two to eight; cells 3-4.5 mic. in diameter, spherical, oval or oblong; 

 sheaths having firm inner layer, homogeneous or lamellose, yellowish- 

 brown, rarely colorless, outer layer homogeneous or lamellose, colorless or 

 nearly so (generally scarcely visible); cell contents homogeneous. 



Pennsylvania. Forming, with other algae, a rather firm, grumous or 

 gelatinous coating of a light brown color, growing on rocks. Fairmount 

 Water Works, near Philadelphia. (Wood). 



44. Gloeocapsa gigas W. and G. S. West. On some Freshwater Algae 



from the West Indies. Journ. Linn. Soc. Bot. 30:276. pi. 16. f. 11-13. 

 1895. De Toni. Syll. Algar. 5:47. 1907. 



Plate I. fig. 26, 27. 



Colonies subglobose, solitary or somewhat aggregated, consisting of 

 from four to thirty-six cells; colonial tegument subglobose, hard, often 

 somewhat rugose on .surface, yellowish or brownish; sheaths indistinct, 

 few, pale yellowish; cells 9-15 mic. in diameter, subglobose or oblong; 

 cell walls smooth or finely granular; cell contents granular, blue-green. 



West Indies. On damp wall of dam. St. Vincent. (Elliott). 



45. Gloeocapsa crepidinum (Rabenhorst) Thuret. Notes Algologiques. i : 2. 



pi. I. f. 1-3. 1876. De Toni. Syll. Algar. 5:44. 1907. 

 Farlow. Marine Algae of New England. 27. pi. i. f. i. 1881. Collins. 

 Algae of Middlesex County. 16. 1888; Algae from Atlantic City, N. J. Bull. 

 Torr. Bot. Club. 15:309. 1888. Bennett. Plants of Rhode Island. 95. 1888. 

 Martindale. Marine Algae of the New Jersey coast and adjacent waters of 

 Staten Island. Mem. Torr. Bot. Club. 1:89. 1889. WoUe and Martindale. 

 Algae. Britton's Catalogue of Plants found in New Jersey. Geol. Surv. N. J. 

 2:611. 1889. Anderson. List of California Marine Algae, with notes. Zoe. 

 2: 217. 1891. Collins. Algae. Rand and Redfield's Flora of Mount Desert 

 Island, Maine. 249. 1894. Collins, Holden and Setchell. Phyc. Bor.-Am. 

 Fasc. 8. no. 351. 1897. Collins. Preliminary Lists of New England 

 Plants. — V. Marine Algae. Rhodora. 2: 41. 1900. Collins, Holden and 

 Setchell. Phyc. Bor.-Am. Fasc. 24. no. 1151. 1904. Collins. Phycological 

 Notes of the late Isaac Holden, — I. Rhodora. 7: 172. 1905. 



Plate I. fig. 28. 



Plant mass gelatinous, somewhat soft, olive-green (becoming black 

 when dried); plants 5-8 mic. in diameter, solitary or in twos or fours; 

 sheaths yellowish-brown, not lamellose; cells 4-7 mic. in diameter. 



Maine. Eastport. (Farlow.) On old logs in a salt marsh. Eagle Island, 

 Penobscot Bay. July 1896. (Collins). Common on rocks, etc.' near high- 

 water mark. (Collins). Massachusetts. Gloucester. (Farlow). On wood- 

 work near high-water mark. Everett; Medford. (Collins). Rhode Island. 

 Newport. (Farlow). Connecticut. On stonework; on wharf logs. Strat- 

 ford Shoals. May, September. (Holden). New York. Staten Island. 

 (Pike). New Jersey. On wharves. Atlantic City. (Morse, Martindale). 



