Myxophyceae 73 



Connecticut. Bruce's Brook, Bridgeport. October, December. (Holden)- 

 New Jersey. Fresh water ponds, frequent. (Wolle). Ohio. Plankton. 

 Put-in-Bay, Lake Erie. (Snow). Wisconsin. Floating in tanks. Trout 

 mere. Osceola. October 1894. (Tilden). California. In a stream at the 

 outlet of Lake Chabot, San Leandro, Alameda County. May 1903. (Gardner). 



Var. tergestina (Kuetz.) Rabenhorst. Fl. Eur. Algar. 2: 102. 1865. 

 Gomont. Monogr. Oscill. 241. 1893. De Toni. Syll. Algar. 5: 168. 1907. 



Tilden. American Algae. Cent. IV. no. 400. 1900. Collins, Holden 

 and Setchell. Phyc. Bor.-Am. Ease. 14. no. 651. 1900. Tilden. American 

 Algae. Cent. VI. no. 593. 1902. Setchell and Gardner. Algae of North- 

 western America. Univ. Calif. Pub. Bot. i: 183. 1903. 



Trichomes 4-6 mic. in diameter. 



Rhode Island. Forming small patches of a verdigris-green color in 

 warm water of escape from a steam boiler. Berkeley. March 1894. (Setchell 

 and Osterhout). 'Minnesota. In polyzoan colony. Mississippi River, St. 

 Paul. 1898. (Freeman). In pool. Lincoln Park, Duluth. August 1901. (Til- 

 den). Washington. In pool of fresh or slightly brackish water. Whidbey 

 Island; Seattle. (Gardner). 



144. Oscillatoria amphibia Agardh. Aufzahling einiger in den ostreich- 

 ischen Landern gefundenen neuen Gattungen und Arten von Algen. 

 Flora. 10: 632. 1827. Gomont. Monogr. Oscill. 241. pi. 7. f. 4, 5. 

 1893. De Toni. Syll. Algar. 5: 169. 1907. 



Wolle. Fresh Water Algae. II. Bull. Torr. Bot. Club. 6: 138. 1877. 

 (O. tenerrima Kg.); Fresh- Water Algae U. S. 310. pi. 205. f. 3. 1887. 

 Bessey. Miscellaneous additions to the Flora of the State, and new or 

 noteworthy species from various localities. Bot. Surv. Nebraska. 46. 1893. 

 Rosenvinge. Les Algues Marines du Greenland. Ann. Sci. Nat. Bot. VII. 

 19: 163. 1894. Collins. Algae. Rand and Redfield's Flora of Mount Desert 

 Island, Maine. 248. 1894. Saunders. Protophyta-Phycophyta. Flora of Ne- 

 braska. 20. pi. 2. f. 18. 1894. Collins. Algae. Flora of the Blue Hills, 

 Middlesex Fells, Stony Brook and Beaver Brook Reservations of the 

 Metropolitan Park Commission, Massachusetts. 127. 1896. Rosenvinge. 

 Deuxieme Memoire sur les Algues Marines du Greenland. Medd. om Green- 

 land. 20. 121. 1898. Tilden. Observations on some West American 

 Thermal Algae. Bot. Gaz. 25: 102. pi. 9. f. 21. 1898. Collins, Holden and 

 Setchell. Phyc. Bor.-Am. Ease. 15. no. 705. 1900. Collins. Preliminary 

 Lists of New England Plants, — V. Marine Algae. Rhodora. 2: 42. 1900. 

 Bessey, Pound and Clements. Additions to the reported Flora of the State. 

 Bot. Surv. Nebraska. 5: 13. 1901. Tilden. American Algae. Cent. VI. 

 no. 594. 1902. Snow. The Plankton Algae of Lake Erie. U. S. Fish Comm. 

 Bull, for 1902. 22: 392. 1903. Collins. Phycological Notes of the late 

 Isaac Holden, — II. Rhodora. 7: 235. 1905. Borgesen and Jonsson. The 

 distribution of the Marine Algae of the Arctic Sea and of the northern- 

 most part of the Atlantic. Botany of the Faeroes. Appendix. XXV. 1905. 



