Myxophyceae 21 



California. On wharves at high water. On northern and middle coasts. 

 (Anderson). Forming gelatinous masses on logs floating in salt water. 

 Alameda. September 1903. (Osterhout, Gardner). 



46. Gloeocapsa magma (Brebisson) Kuetzing. Tab. Phyc. i: 17. pi. 22. f. 

 I. 1845-1849. De Toni. Syll. Algar. 5: 35. 1907. 

 Dickie. Algae, in Hooker. An account of the plants collected by Dr. 

 Walker in Greenland and Arctic America during the Expedition of Sir 

 Francis M'Clintock, R. N., in the Yacht "Fox", 21 June i860. Journ. Linn. 

 Soc. Bot. 5: 86. 1861. (Sorospora montana Harv.); Notes on a 

 collection of Algae procured in Cumberland Sound by Mr. James Taylor, 

 and remarks on Arctic species in general. Journ. Linn. Soc. Bot. 9: 242. 

 1867. Nordstedt. De Algis Aquae Dulcis et de Characeis ex Insulis Sand- 

 vicensibus a Sv. Berggren 1875 reportatis. 3. 1878. Dickie. On the Algae 

 found during the Arctic Expedition. Journ. Linn. Soc. Bot. 17:9. 1880. 

 Farlow. Notes on the Cryptogamic Flora of the White Mountains. Appa- 

 lachia. 3:236. 1883. WoUe. Fresh-Water Algae U. S. 331. pi. 210. f. 26-31. 

 1887. WoUe and Martindale. Algae. Britton's Catalogue of Plants found 

 in New Jersey. Geol. Surv. N. J. 2: 612. 1889. Collins, Holden and Setch- 

 ell. Phyc. Bor.-Am. Fasc. 4. no. 151. 1896. Collins. Algae. Flora of the 

 Blue Hills, Middlesex Fells, Stony Brook and Beaver Brook Reservations 

 of the Metropolitan Park Commission, Massachusetts. 126. 1896. Richter. 

 Siisswasseralgen aus dem Umanakdistrikt. Bib. Bot. Heft. 42. 3. 1897. 

 Collins. Algae of the Flume. Rhodora. 6: 229. 1904. Lemmermann. Al- 

 g£nfl. Sandwich-Inseln. Bot. Jahrb. 34: 614. 1905. Buchanan. Notes on 

 the Algae of Iowa. Proc. Iowa Acad. Sci. 14: 9. 1908. 



Plate I. fig. 29. 



Plant mass grumous, crustaceous, coppery-purple, becoming black when 

 dried; families 30-70, rarely 300 mic. in diameter; plants 6-12 mic. in diam- 

 eter, spherical; sheaths lamellose, deep purple or copper-brown, usually not 

 pellucid, the external layer very broad, globose, paler or colorless, soon 

 diffluent; cells 4.5-7 mic. in diameter, spherical; cell contents blue-green, 

 granular, often becoming brownish. 



Dominion of Canada. Fresh water. Port Kennedy. (Walker). Cumber- 

 land Sound, Davis Strait. (Taylor). Marshes, Floeberg Beach, 82° 27' N. 

 (Dickie). Greenland. Fresh water brook. Karaiak, near south end of 

 Nunataks, Umanakdistrikt. 1892, 1893. (Vanhoffen). United States. 

 Forming a purplish-brown, grumous thallus. (Wolle). New Hampshire. 

 Common on wet stones at the top of Cabot Mountain, Shelburne. (Far- 

 low). One of the species composing the brown coating of the wall of "The 

 Flume." September 1904. (Collins). Massachusetts. Forming a dark 

 purplish slimy coating on perpendicular wet rocks. Middlesex Fells. June 

 1895. (Collins). New Jersey. On shaded rocks. (Wolle). Minnesota. 

 On rocks. Taylor's Falls. July 1896. (Fink). Iowa. On granitic boulders. 

 Fayette. (Fink). Hawaii. Mauna Kea. Island of Hawaii; on stones. 

 Island of Oahu. (Berggren). 



Var. itzigsohnii (Bornet) Hansgirg. Prodromus der Algenflora von 

 Bohmen. 2: 147- 1892. De Toni. Syll. Algar. 5: 36. 1907. 



