IS6 Minnesota Algae 



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

 Surv. N. J. 2: 609. 1889. Murray. Catalogue of the Marine Algae of the 

 West Indian Region. Journ. of Bot. 27: 261. i88g. (C h t ho n o b 1 a s t u s 

 1 y n g b e i Kg.). Johnson and Atwell. Fresh Water Algae. Northwestern 

 University. Report Dept. Nat. Hist. 21. 1890. Collins. Algae. Rand and 

 Redfield's Flora of Mount Desert Island. Maine. 247. 1894. Collins, Hoi 

 den and Setchell. Phyc. Bor.-Am. Fasc. 4. no. 153. 1896. Collins. Pre 

 liminary Lists of New England Plants. — ^V. Marine Algae. Rhodora 2: 42. 

 1900. Bessey, Pound and Clements. Additions to the Reported Flora o: 

 the State. Bot. Surv. Nebraska. 5: 13. igoi. Collins. The Algae o 



Jamaica. Proc. Am. Acad. Arts Sci. 37: 240. 1901. Collins, Holden and 

 Setchell. Phyc. Bor.-Am. Fasc. 19. no. 906. 1902. Collins. Notes on 

 Algae. VI. Rhodora. 5: 233. 1903. Setchell and Gardner. Algae of North- 

 western America. Univ. Calif. Pub. Bot. i: 188. 1903. 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: 223. 

 1905. Tilden. American Algae. Cent. VII. Fasc. i. no. 635. 1909. 



Plate VI. fig. 28. 



Filaments twisted, rarely branched, forming a dull or dark green, pan- 

 riose, broadly expanded, compact, stratified mass, made up of layers of 

 different colors, or growing sparsely among other algae; sheaths cylindrical, 

 more or less unequal and roughened in outline, with apex usually open, 

 sometimes entirely diffluent; trichomes 2.5-6 mic. in diameter, constricted 

 at joints, short, somewhat straight, many within the sheath, usually dense- 

 ly aggregated into bundles, rarely twisted into cords; apex of trichome 

 tapering; apical cell not capitate, acute conical; cells 3.6-10 mic. in length; 

 transverse walls not granulated. 



Canada. Mixed with other algae. Malpeque, Prince Edward Island. 

 (Faull). Maine. Very common in lagoon. Little Cranberry Isle. (Col- 

 lins). Shore west of Bracy Cove. (Holden). New Hampshire. (Col- 

 lins). Massachusetts. Mixed with other algae, common along the New 

 England coast. Wood's Holl. (Farlow). Salt marshes. (Collins). Growing 

 on sand between tide marks, salt marsh. Wood's Hole. July 1895. (Oster- 

 hout). Rhode Island. Geneva. (Bennett). Connecticut. Forming a 

 thick coating on turf near high water mark. Seaside Park; in sheets on 

 sandy bottom between tide marks. Cook's Point, September, October. 

 (Holden). New York. Shores of Long Island, Fort Hamilton, Green- 

 port. Summer. (Pike). New Jersey. In brackish pools. Atlantic City. 

 (Morse, Martindale). On moist earth. (Wolle). Texas. 1902. (Fanning). 

 Ohio. Plankton. Put-in-Bay, Lake Erie. (Snow). Illinois. Running 



water. Big Woods, Cook County. April. (Johnson and Atwell). Dakota. 

 (Hobby). Washington. Growing on the mud in a salt marsh. Pen's 

 Cove, Whidbey Island. (Gardner). West Indies. In turfs of algae. St. 

 Ann's Bay, Jamaica. March 1893. (Humphrey). Cuba. (R. de la Sagra). 



301. Microcoleus vaginatus (Vaucher) Gomont. Essai Class. Nostocacees 

 homocystees. Morot. Journ. de Bot. 4: 353. 1890; Monogr. Oscill. 

 93. pi. 14. f. 12. 1893. De Toni. Syll. Algar. 5: 374. 1907. 



