^3° Minnesota Algae 



Plant mass fasciculate-caespitose, dull, rarely dark lead-colored; fas- 

 cicles up to 3 cm. in height, erect, spine-shaped, often lighter colored at 

 base on account of empty sheaths; filaments very densely entangled, some- 

 what agglutinated, sometimes branched, unequally and angularly twisted; 

 shtaths thin, somewhat mucous; trichomes 6-14 mic. in diameter, often 

 constricted at joints near the apices; apical cell slightly inflated; calyptra 

 none; cells 5-14 mic. in length; transverse walls usually indistinct; cell 

 contents granular, blue-green. 



Massachusetts. (Collins). Rhode Island. (Collins). Connecticut. 

 In Yellow Mill Pond. August, (flolden). New York. Forming extended 

 patches on mud left bare at low tide in the bottom of a creek. Cold spring 

 Harbor. July 1895. (Johnson). West Indies. Guadeloupe. (Maze). 



Var. genuina Gomont. 1. c. 127. 



Collins, Holden and Setchell. Phyc. Bor.-Am. Fasc. 19. no. 905. 1902. 

 Collins. The Algae of Jamaica. Proc. Am. Acad. Arts Sci. 37: 240. 1901. 



Trichomes 6-8 mic. in diameter; cells equal to or somewhat longer than 

 the diameter. 



Washington. Growing on old logs in a small cove. Whidbey Island. 

 June 1901. (Gardner). West Indies. On rocks in shallow water, in 

 small patches, not abundant. Montego Bay and Manchioneal Bay, Jamaica. 

 1900. (Pease and Butler). 



Var. fasciculata (Kuetz.) Gomont. 1. c. 127. De Toni. 1. c. 302. 



Farlow. Marine Algae of New England. 184. 1881. (S. fasciculata 

 Kuetz.). Collins. The Algae of Jamaica. Proc. Am. Acad. Arts Sci. 37: 

 240. 1 90 1. 



Trichomes 8-14 mic. in diameter; cells scarcely as long as the diameter. 



Rhode Island. On rocks between tide marks. Newport. (Farlow). 

 West Indies. Montego Bay and Manchioneal Bay, Jamaica. (Pease and 

 Butler). 



250. Symploca laete-viridis Gomont. Monogr. Oscill. 129. pi. 2. f. 6-8. 1893. 



De Toni. Syll. Algar. 5: 302. 1907. 



Setchell and Gardner. Algae oi Northwestern America. Univ. Calif. 

 Pub. Bot. 1 : 188. 1903. 



Plate V. fig. SO. 



Plant mass thin, fibrillose, light green or yellowish; fascicles up to 1 

 mm. in height, slender, appressed to substratum; filaments moderately 

 flexuous, somewhat parallel, agglutinated, not branched; sheaths wide, 

 somewhat mucous; trichomes 1. 5-3. 5 mic. in diameter, especially constricted 

 at joints; apical cell conical; calyptra none; cells 2.5-6 mic. in length; cell 

 contents not granular, light green. 



Alaska. On mud-covered rocks near the upper tide limit. St. Michael. 

 (Setchell). Florida. Key West, Gulf of Mexico. (Farlow). 



251. Symploca thermalis (Kuetzing) Gomont. Monogr. Oscill. 134. pi. 2. 



f. IS, 16. 1893. De Toni. Syll. Algar. 5: 307. 1907. 

 Tilden. American Algae. Cent. III. no. 294. 1898; Observations on 

 some West American Thermal Algae. Bot. Gaz. 25: 98. pi. 9. f. 14. 1898. 

 Collins, Holden and Setchell. Phyc. Bor.-Am. Fasc. 14. no. 652. 1900. 



