36 Minnesota Algae 



Pennsylvania. Forming an extended stratum over the bottom of lime- 

 stone spring. The stratum is in places nearly an inch in thickness and when 

 lifted by the hand is found to be loose and crumbly. "Boiling Springs", 

 two miles from Belief onte, Centre County. (Wood). On bottom of lime- 

 stone springs. Northampton and Lehigh Counties. (Wolle). 



86. Microcystis packardii (Farlow) nob. De Toni. Syll. Algar. 5: 93. 1907. 



Packard. The Sea-weeds of Salt Lake. Am. Nat. 13: 701. 1879. (P o I y- 

 cystis packardii Farlow). Tilden. American Algae. Cent. IH. 

 no. 298. 1898. 



Plate II. fig. 20. 



Plant mass irregular in shape, firm, gelatinous, displaying various tints 

 of pink, brown or green; cells 2:5-4 ™ic. in diameter, 6-7 mic. in length, 

 oblong or elliptical. 



Utah. Forming irregularly-shaped balls or masses of a firm gelatinous 

 structure, showing various tints of pink, brown and green. In thick masses 

 around edge of lake for a distance of forty feet out from shore and one to 

 two feet in depth. Often washed ashore and left in beds on sand. Garfield 

 Beach, Great Salt Lake. July 1897. (Tilden). 



87. Microcystis piscinalis (Briigg.) De Toni. Syll. Algar. S : 90. 1907. 



Wolle. Fresh Water Algae. II. Bull. Torr. Bot. Club. 6: 137. 1877. 

 (Polycystis piscinalis Brugg.) 



Plant mass mucous, floccose, amorphous, sky-blue, becoming gray- 

 green when dried; colonies somewliat spherical, distinctly limited, many 

 sometimes surrounded by a more or less dissolved common tegument; cells 

 somewhat spherical or ellipsoid; cell contents homogeneous, blue-green. 



Pennsylvania. In pools. Near Bethlehem. (Wolle). 



88. Microcystis pallida (Farlow) Lemmermann. Algen. Kryptogamenflora 



der Mark Brandenburg. 3: yj. 1907. De Toni. Syll. Algar. 5: 93. 1907. 



Collins. Algae from Atlantic City, N. J. Bull. Torr. Bot. Club. 15:310. 

 1888. (Polycystis pallida (Kuetz.) Farlow). Martindale. Marine 

 Algae of the New Jersey Coast and Adjacent Waters of Staten Island. 

 Mem. Torr. Bot. Club, i: 90. 1889. Wolle and Martindale. Algae. Brit- 

 ton's Catalogue of Plants found in New Jersey. Geol. Surv. N. J. 2: 611. 

 i88g. Collins. Algae. — Rand and Redfield's Flora of Mount Desert 

 Island, Maine. 249. 1894. Preliminary Lists of New England Plants, — V. 

 Marine Algae. Rhodora. 2: 43. 1900. 



Colonies irregular in shape, with an indistinctly limited tegument; cells 

 S-5.5 mic. in diameter, spherical or oval; cell contents bluish green. 



Maine. Among small algae. Seal Harbor. (Collins). Massachusetts. 

 Gloucester (Farlow). Rhode Island. Newport. (Farlow). New Jer- 

 sey. On decaying algae. Atlantic City. (Morse). 



