172 Myxophyceee, Oscillatorieae, Oscillatoria. 



Hah. in lacubus et stagnis ad Berolinum et in Holsatia (Lem- 

 mermann). 



44. Oscillatoria geminata (Menegh.) Gomont Monogr. p. 222, t. VII, 410 

 f. G, Oscillaria geminata Menegh. Consp. Alg. Eng. p. 0, 1837, 

 non Schwabe. — Strato sorditle luteo-viridi; trichomatibus pallide 

 terugineis, arcuatis, passim circinatis, subfragilibus, ad genicula 

 eximie constrictis, 2,3-4 {j.. crassis, apice rectis vel arcuatis neque 

 attenuatis neque capitatis; articulis valde insequalibus quairatis aut 

 sa?pins diametro longioribus, 2,3-16 [j.. longis; contentu paucis gra- 

 nulis crassis et refringentibus consperso ; dissepimentis lucidis 

 haud granulatis; cellula apicali rotunlata; calyptra nulla. 



Hah. in aquis thermalibus Gallia^. ad Dax ('rHORE, Thuret, 

 P'lahault), Italifs ad Abano (Meneghini), Bosnite (Gutwinski) ; in 

 National Park U. S. Amer. bor. (Tilden) et ins. Whidbey (Gardner); 

 in regione Siamensi (Volz); ad «Usafna» et in lacu Nyassa Africae 

 centralis (Fulleborn, Schmidle); in ins. Sumatra (Volz). 



45. Oscillatoria putrida Schmidle in Beih. zum Bot. Centralbl. 1901, 411 

 Bd. X, p. 179. — Filis solitariis, longis, tenuibus, flexilibus, cur- 

 vatis, circ. 2 (j.. diam., apicibus non incurvatis, non attenuatis la- 

 teque rotundatis ; celbilis rectangularibus, 2 [j.. crassis, 4-7-pIo 

 diam. longioribus, contentu subtiliter granuloso, subhomogeneo, 

 luteo-viridi; cellulis linea subtili, hyalina 1-3 granulis refringen- 

 tibus notata separatis. 



Hah. in limo nigro, sulphure gravido, in ripis scrobium aqua 

 fcetenti repletis prope « Ludwigshafen » Germani?e (Lauterborn). 



46. Oscillatoria subbrevis Schmidle Ueb. die tropische Afrik. Thermal- 412 

 alg. in Engl. Bot. Jahrb. XXX, 1901, p. 242, t. IV, f. 7. — Fila- 

 mentis solitariis, Phormidio immixtis, 5-6 ^.. diam., sufficienter 

 rectis, apicibus rectis non attenuatis late rotundatis, contentu pal- 

 lide jorugineo-viridibus; cellulis valde brevibus, 1-2 [i. longis, disse- 

 pimentis non granulatis regre conspicuis. 



Hah. ad « Usafua » in surgentibus prope «Nakwikwi» Africas 

 (Goetze). — Celluhe vacua3 inflata3 intervallis subregularibus re- 

 periuntur. 



47. Oscillatoria chlorina (Kuetz.) Gom. Monogr. p. 223, Oscillaria 413 

 chlorina Kuetz. Phyc. gen. p. 185, Phyc. germ. p. 158, Spec. 



p. 239, Tab. Phyc. I, p. 28, t. XXXIX, f. III, Rab. FI. Eur. Alg. II, 

 p. 97, Wood Freshw. Alg. of U. S. p. 18, t. I, f. 1, Kirchn. Algenfl. 

 V. Schles. p. 246 p. p., WoIIe Freshw. Algse of U. S. p. 31 1 p. p., 

 Laut. et Schmidle in W. N. et L. exs. n. 1533! Gardn. in Coll., 



