Myxophycese, Oscillatorieae, Oscillatoria. 157 



dcnse circinatiin convohitis, 4,7 \>.. crassis. Prope Zwiclien in Saxonia 

 (Kreischer). — Var. phormidioides Rabenli., Osc. Froelichii var. 

 phormidioides Rab, Fl. Etir. Alg. II, p. 109, Lynghija Froclichii 

 var. phormidioides Hansg. Prodr. II, p. 118. Per totam Europani 

 passini f Rabenhorst) ; in Bohemia (Hansgirg), in lacu Constantiae 

 et in Benaco (Kirchner). — Var. badia Tilden Amer. Alg. cent. II 

 (18!)G) n. 188. In « National Park Minn. » Amer. bor. (Tilden). 



13. Oscillatoria curviceps Agardh Syst. Alg. p. 68, 1864, Gomont Ess. 379 

 in Journ. de Bot. IV, p. 356, Monogr. p. 213, t. VI, f. 14, J. Schmidt 

 Cyan. Dan. pag. 73, c. ic, Oscillaria limosa Aresch. Alg. Scand. 

 exs. 84, Oscillaria margaritifera Kiihn in Rab. exs. n 207! 



0. Froelichii Kiihn in Rab. Algen n. 7751 Rab. FI. Eur. x\lg. II, 

 p. 109 p. p., 0. Froelichii c. viridis Zeller in Rab. exs. n. 855, 

 Fl. Eur. Alg. II, p. 109 p. p., Kirchn. Alg. Schlesien p. 248, Osc. 

 subsalsa [5 dulcis Crouan in Maze et Schramm Alg. de la Guad. 

 II, ed. p. 16, Oscillaria major Vauch. f. tenuior Nordst. in W. 

 et N. exs. n. 286! Lynghya major (Vaucli.) Hansg. p temcior 

 (Nordst.) Hansg. Prodr. II, p. 119. — Strato hete vel nigro ceru- 

 ginoso, siccitate frequenter atro-chalybeo; trichomatibus a^Higinosis, 

 elongatis, inferne rectis, superne uncinatis vel in spiram laxam 

 contortis, haud torulosis, 10-17 [x. crassis, apice non aut vix atte- 

 nuatis, haud capitatis; articulis diametro trichomatis 8-6-pIo bre- 

 vioribus, 2-5 [x. longis; contentu uniformiter granuloso aut disse- 

 pimentis lineis binis punctatis notatis; membrana cellulae apicalis 

 superne convexa, interdum leviter incrassata. 



Hab. in stagnis ac foiitibus ad folia putrida per Sueciam (Agardh, 

 Areschoug, Nordstedt, Lagerheim, Lemmermann), ins. Fioniam 

 et Daniani passim (Hofmann-Bang, Rosenvinge, Johs. Schmidt), 

 insulas Faeroenses (Boergesen), Galliam septentrionalem et occi- 

 dentalem (Thuret et Gomont), Basileam Helvetije (Borge), Ger- 

 maniam centralera (Rabenhorst, Lemmermann, Royers), Tiroliam 

 et Bohemiam CHansgirg), Rossiam (Iwanow), Americam foeJcratam 

 (WoLLE, Farlow, Collins, Tilden), Antillas (Maze et Schramm), 

 Brasiliam (Schmidle), Fuegiam (Borge). 



14. Oscillatoria major Vauch. Hist. des Conf. p. 192, n. 2, t. XV, f. 3, 380 

 Ag. Syst. p. 67, Kuetz. Tab. Phyc. I, t. 43, Rab. Fl. Eur. Alg. II, 



p. 111, WoIIe Freshw. Alg. of U. S. p. 316, t. CCVII, f. 11-12 (?), 

 ^l/^W^lJf^ major Hansg. Prodr. II, p. 119, var. excl. — Strato 

 membranaceo mucoso, viridi-chalybeo vel chalybeo-nigro subnitido; 

 trichomatibus rectis, strictis, 18-23 {jl. crassis, siepius fascia angusta 



