174 Myxophyceee, Oscillatorieae, Oscillatoria. 



f. ]X, Ruse in Rab. Alg. exsicc. n. 161 ! Rab. Fl. Eur. A.lg. II, p. 96, 

 SLiring. Obs. phyc. in Fl. Bat. p. 48, Wolle Freshw. AlgcB of U. S. 

 p. 311, t. CCVI, f. 7, Kirchn. Algenfl. von Schl. p. 246, Cooke Brit. 

 Freshw. Alg. p. 247, t. XCVI, f. 5 incl. syn. [0. lcptotricha var. 

 splendida Grev.), Gom. in Journ. de Bot. IV, p. 356, Stockin. in 

 H. et R. Phyc. Univ. n. 475! NorJst. in W. et N. n. 290?, Lijnghya 

 leptotricha Hansg. Prodr. II, p. 107, Leptothrix wruginea Itz. 

 und Rothe in Rab. exs. n. 106, Oscillatoria tenerriina Lasch in 

 Rab. exs. n. 329 nec alior., Ilypheothrix ceruginea Rab. Fl. Eur. 

 Alg. II, p. 78, Osc. longearticularis Cronan Fl. du Finistere p. 112, 

 Oscill. leptothricoides Hansg. in Ber. der Deutsch. bot. Ges. Bd. III, 

 Hft. I, p. 21, t. III, f. 13-15, Wittr. et Nordst. exsicc. n. 784! Pla- 

 xonema oscillans Tangl Morph. Cyanoph. (1883) p. 1, t. I-III, 

 cfr. Hansg. in Ber. d. D. B. Ges. 1885. — Trichomatibus pallide 

 [erugineis, sparsis vel in stratum tenue pelliculare, conspicue aeru- 

 ginosum aggregatis, rectis aut subflexuosis, elongatis, ad genicula 

 haud constrictis, 2,3 [i. crassis, apice productis, longe attenuatis, 

 flexuosis et capitatis; articulis diam. 2-4-plo longioribus, rarius 

 subquadratis, 3-9 [x. longis; contentu homogeneo aut dissepimentis 

 granulis paucis refringentioribus notatis; cellula apicali superne 

 inflata vel obtuse rotundata, vix attenuata, siBpius recurvata ; ca- 

 lyptra nulla. 



Hah. in stagnis et caldariis, in stillicidiis, sociis Phormidiis 

 aliisque Oscillarieis etiamve submersa in Caledonia (Greville), 

 Dania (Schmidt), Suecia (J. Agardh, Gosselmann, Nordstedt, 

 Cleve), Scotia, Hibernia, Anglia (West), Batavia (Suringar), Gallia 

 boreali ad Lutetiam (Gomont), occidentali (Durieu) et meridionali 

 (Flahault), Lusitania (Moller, Newton), Germania (Kuetzing, 

 Rabenhorst, Kirchner, Strohmayer, Lemmermann) ; ad « Wange- 

 rooge » litoris Frisiae (Lemmermann); in Austria (Schiedermayr, 

 Beck, Hansgirg), Galicia (Gutwinski), Bosnia, Hercegovina (Gut- 

 wiNSKi, Karlinski, Stockmayer, Beck), Istria (Hansgirg), Carinthia 

 in lacu «Worter» (Kirchner), Polonia (Raciborski, Gutwinski, 

 Lopott, Alexenko), Rossia (Iwanow); in lacu Balaton Hungariae 

 (Istvanffi); in Bohemia (Hansgirg), Italia ad «Porto Maurizio» 

 (Strafforello), ad Patavium (Macchiati, sec. Gomont) et in Be- 

 naco (Kirchner), prope Neapolin (Balsamo), Veronam (Forti), Par- 

 mam (Mach), Senas (Tassi), Bellunum (E. De Toni), et in regione 

 Forojuliensi (Del Torre); in Algeria (Debray), Amer. bor. (Collins, 

 Bessey, Holden, Setchell, Wolle), Africa aequatoriali (Schmidle); 



