Myxophycese, Oscillatorieae, Oscillatoria. 167 



Mori in Erb. critt. it. 11, n. 1247! 0. antliaria Lofgr. in W. et 

 N. exs. Faso. XII, n. 588! 0. limosa [3 animalis W. et N. exs. 

 n. 997! Lynghya tenuis Hansg. Prodr. II, p. 111 excl. synon. ct 

 variet. saltem p. p., Oscillaria sahsalsa Kjellm. Nor. ishav. liafsalg. 

 p. 396 (323), nec alior (cfr. L. K. Rosenv. Groonlands Havalg. 

 [1893] pag. 967), Oscillatoria contexta Carmich. in Hook. Engl. 

 Fl. vol. V, pars I, p. 376, 1833, Harvey Man. of the British Alg. 

 p. 165, Hass. Brit. Freshw. Alg. p. 256, t. 71, f. 4-6-7. — Strato 

 tenui, nerugineo; trichomatibus ajrnginosis, rectis, fragilibus, ad ge- 

 nicula Sii3pe l;T!viter constrictis, 4-10 [jl. crassis, apice rectis vol 

 arcuatis neque attenuatis neque capitatis; articulis subquadratis 

 vel diam. trichomatis usque 3-plo brevioribus, 2,5-5 jx. longis; disse- 

 pimcntis plerumque lineis geminis pnnctato-granulatis ornatis; 

 celiuhx apicali superne convexa, membranam paululum in?rassatani 

 pnebente. 



Hal). initio limo adfixa, deinde natans in fossis, lacubus, stagnis, 

 fontibns frigidis aut thormalibus Groenlandise (Rosenvinge), ins. 

 Faeroensium (Boergesen et Ostenfeld), Sueciae et Norvegiae (Nord- 

 STEDT, Naumann, Borge, Lagerheim), Daniae (Schmidt), Scoliie 

 (West), Angliae (Cutler, Holmes, Batters, West, Bennett), Hiber- 

 ni;i3 (West), Batavioe (Suringar), Belgii (De Wildeman, Bory), 

 Galli;ie (Bory, Libert, Mougeot, Desmazieres, Thuret, Gomont), 

 Germania3 (Kuetzing, Rabenhorst, Kirchner, Reinke, Reinbold, 

 Bulnheim, Rovers, Lemmermann, Strohmayer, Volk, Schroeder), 

 lacus Constanti;i3 (Kirchner) et passim Helveti;i3 (Naegeli, DiiG- 

 geli), Hungaria3 (Martens, Istvanfpi, Filarsky), Italiio (Mene- 

 ghini, Mori, De Toni, Macchiati, Zanfrognini, Tassi, Balsamo, 

 Strafforello, Grilli, Forti), ins. del Giglio (Sommier), Dalmati;Te 

 (Hansgirgj, Galicia3 (Gutwinski), Bosnise ac Hercegovinas (Beck, Pko- 

 Tic, Gutwinski, Karlinski), Serbiffi, Romani:t3 (Istvanffi), Riesen- 

 gebirge (Schroeter), Austrioe (Beck, Stockmayer, Schiedermayr), 

 Polonioe (Alexenko, Kozlowski, Raciborski), Bohemiae (Hansgirg), 

 Fenni;u (Ievander), Rossiie (Dorofiefp, Iwanow), ins. «Menorca» 

 Balearium (Rodriguez), Lusitania3 (Mueller), Islandite (Lindsay), 

 ins. Azoricarum (Bohlin), Africoe bore;\lis (Debray, Sauvageau) 

 et ;cquinoctialis (Jungner, Schmidle, Fulleborn, Welwitsch), 

 Asi:e centndis (Holderer), Koh-Chang (Schmidt), ins. Ceylon;i' 

 (West), Americ:i3 borealis (Bailey, Wolle, Farlow, Collins, Bes- 

 SEY, Webber, Tilden, Setchell, Gardner, Holden etc), Antil- 

 larum (Maze et Schramm, Kuntze, Collins), .Equatoria^ (Lager- 



