Myxophyceae 5 



1. Chroococcus rubrapunctus WoUe. Bull. Torn Bot. Club. 6: i8i. 1877. De 



Toni. Syll. Algar. 5:8. 1907. 

 Plants 2-2.S mic. in diameter, spherical, single or in masses, aquatic; 

 sheaths thin, gelatinous; cell contents homogeneous, yellowish-orange, sur- 

 rounding a large orange-red area. 



Pennsylvania. Not infrequent on boarded sides of basins and old tim- 

 bers. (Wolle). 



2. Chroococcus macrococcus (Kuetzing) Rabenhorst. Flora Europaea Al- 



garum. 2: 33. 1865. De Toni. Syll. Algar. 5: 8. 1907. 

 Nordstedt. De Algis Aquae Dulcis et de Characeis ex Insulis Sand- 

 censibus a Sv. Berggren 1875 reportatis. 3. 1878. Lemmermann. Algenfl. 

 Sandwich-Inseln. Bot. Jahrb. 34: 614. 1905. 



Plate I. fig. I. 



Plant mass more or less extensive, mucous, somewhat thick, yellowish- 

 green; plants 30-80 mic. in diameter, spherical, single or in pairs or fours; 

 sheaths thick, lamellose, colorless, later irregularly peeling off; cells 25-50 

 mic. in diameter; cell contents homogeneous, yellowish, orange or dark- 

 colored. 



Greenland. (Boergesen). Hawaii. In stagnant water. Volcano Mauna 

 Kea. Island of Hawaii. (Berggren). 



3. Chroococcus turicensis (Naegeli) Hansgirg. Prodr. Algenfl. Bohman. 



2:160. f. 58b. 1892. De Toni. Syll. Algar. 5:9. 1907. 



Plate I. fig. 2. 



Plant mass gelatinous, smooth, orange-colored; plants spherical, single 

 or in pairs or fours; sheaths moderately thick; cells 19-34 mic. in diameter; 

 cell contents finely granular, orange-colored, rarely blue-green. 



Greenland. (Boergesen). 



4. Chroococcus turgidus (Kuetzing) Naegeli. Gatt. Einz. Alg. 46. 1849. De 



Toni. Syll. Algar. 5: 11. 1907. 



Nordstedt. De Algis Aquae Dulcis et de Characeis ex Insulis Sandvi- 

 censibus. 3. 1878. Dickie. On the Algae found during the Arctic Expedi- 

 tion. Journ. Linn. Soc. Bot. 17: 9. 1880. Farlow. Marine Algae New Eng- 

 land. 27. 1881. Wolle. Fresh-Water Algae. U. S. 334. pi. 210. f. 40, 41. 1887. 

 Collins. Algae of Middlesex County. 16. 1888; Marine Algae of Nantucket. 

 4.1888. Bennett. Plants of Rhode Island. 116. 1888. Wolle and Martin- 

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

 N. J. 2:612. 1889. Martindale. Marine Algae of the New Jersey Coast 

 and Adjacent Waters of Staten Island. Mem. Torn Bot. Club, i: 89. 1889. 

 Mackenzie. A Preliminary List of Algae collected in the neighborhood of 

 Toronto. Proceedings of Canadian Institute. III. 7: 270. 1890. Anderson. 

 List of California Marine Algae, with notes. Zoe. 2: 217. 1891. Col- 



lins. Algae. Rand and Redfield's Flora of Mount Desert Island, Maine. 

 249. 1894. West and West. On some Freshwater Algae from the West 

 Indies. Journ. Linn. Soc. Bot. 30:275. 1895. Setchell. Notes on Cyan- 



