Ii8 Minnesota Algae 



trichome not tapering; apical cell rotund, showing a slightly thickened outer 

 membrane; cells 2-4 mic. in length; cell contents finely granular, pale blue- 

 green. 



Hawaii. On marine algae. Laysan. (Schauinsland). 



231. Lyngbya sordida (Zanardini) Gomont. Monogr. Oscill. 146. pi. 2. f. 



21. 1893. De Toni. Syll. Algar. 5: 260. 1907- 

 Murray. Catalogue of the Marine Algae of the West Indian Region. 

 Journ. of Bot. 27: 261. 1889. (L. viol ace a Menegh.). Vickers. Liste 

 des Algues Marines de la Barbade. Ann. Sci. Nat. Bot. VIII. i: 55- iQOS- 



Plate V. fig. 37- 



Plant mass up to 3 cm. in height, caespitose, fasciculate, dark or dull 

 yellowish green, when dried usually dark violet; filaments straight, some- 

 what rigid; sheaths smooth; trichomes 14-31 mic. in diameter, evidently con- 

 stricted at joints; apex of trichome not tapering; apical cell rotund; calyp- 

 tra none; cells 4-10 mic. in length; cell contents frequently showing scat- 

 tered coarse granules, olive greeg. 



West Indies. Guadeloupe. (Maze). Maxwell. (Vickers). 



Forma bostrychicola (Crouan) Gomont. 1. c. 146. 



Maze and Schramm. Essai Class. Algues Guadeloupe. 26. 1870-1877. 

 (L. bostrychicola Crouan). Murray. Catalogue of the Marine 



Algae of the West Indian Region. Journ. of Bot. 27: 261. 1889. 



Trichomes 14-20 mic. in diameter; cells up to 10 mic. in length. 



West Indies. Guadeloupe. (Maze). 



232. Lyngbya semiplena (C. Agardh) J. Agardh. Algae maris Mediterranei 



et Adriatici. 11. 1842. Gomont. Monogr. Oscill. 158. pi. 3. f. 7-11. 



1893. De Toni. Syll. Algar. 5: 273. 1907. 

 Schramm and Maze. Essai Class. Algues Guadeloupe. 31. 1865. (L. 

 sordida Crouan). Maze and Schramm. Essai Class. Algues Guade- 

 loupe. 21. 1870-1877. Wolle. Fresh Water Algae. II. Bull. Torr. Bot. Club. 

 6: 138. 1877. (Ph. congestum Rabenh.) Farlow. Marine Algae of 

 New England. 3S. i88i. (L. luteo-fusca Ag.) Pike. Check List of 

 Marine Algae. Bull. Torr. Bot. Club. 13: 105. 1886. Bennett. Plants .of 

 Rhode Island. 95. 1888. Collins. Algae of Middlesex County. 14. 1888. 

 Murray. Catalogue of the Marine Algae of the West Indian Region. Journ. 

 of Bot. 27: 261. 1889. (L. luteo-fusca Ag. and L. schowiana Kg.) 

 Martindale. Marine Algae of the New Jersey Coast and Adjacent Waters 

 of Staten Island. Mem. Torr. Bot. Club, i: 91. 1889. Wolle and Martin- 

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

 Surv. N. J. 2: 608. 1889. Collins. Algae. Rand and Redfield's Flora of 

 Mount Desert Island, Maine. 248. 1894. Collins, Holden and Setchell. 

 Phyc. Bor.-Am. Fasc. i. no. 5. 1895. 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: 12. 1901. Tilden. Collection of Algae from the Hawaiian 

 Islands. Haw. Almanac and Annual for 1902. 112. 1901; American Algae. 

 Setchell and Gardner. Algae of Northwestern America. TJniv. Calif. Pub. 



