Afyxophycese, Oscillatorieae, Oscillatoria. 173 



H. ct S. Phyc. bor. Amer. n. 901 ! Lynghya amcena (Kuetz.) Hansg. 

 var. chlorina (Kiietz.) Hansg. Prodr. II, p. 21. — Strato tenuissimo, 

 arachnoideo, hiteo-viridi; trichomatibus aureo-viridibus, chlorinis, 

 rectis vel arcuatis, fragilibus, ad genicula non constrictis, 3,5-4 [j.. 

 crassis, apice rectis vel curvulis non attenuatis; articulis diametro 

 trichomatis paulo brevioribus vel longioribus, 3,7-8 [t. longis, con- 

 tentu vix granuloso farctis; dissepimcntis pellucidis non granulatis; 

 cellula apicali superne rotundata; calyptra nulla. 



Hah. ad superficiem foliorum putrescentium in fossis (jralliae 

 borealis ad Lutetiam (Gomont), Itdlite in Liguria (Strafforello) et 

 ad Neapolin (Balsamo), Dahnatioe, Austriae ^Hansgirg), Germania^ 

 (KuETZiNG, Kirchner), Batavi^T? (Suringar), Galicise (Gutv^inski), 

 Bohemia? (Hansgirg), Romani;e (Istvanffi), PtOssi^B (Riabinine), 

 Groenlandiie (Richter), Amer. bor. (Wood, Farlovv), ins, «Whidbey» 

 (Setchell et Gardner), « Montevideo » x\mer. mer. (Wille), Lan- 

 genburg Africa^ (Schmidle). 



48. Oscillatoria gloiophila Grun. in Rab. Fl. Eur. Alg. II. p. 98. — 4U 

 Trichomatibus circinatis, varie flexuosis, 3,7-4,5 [i. crassis, nonnun- 

 quam indistincte vaginatis, articulis diametro a?qualibus, ad geni- 

 cula plus minus evidenter duplici serie punctatis, subtorulosis. 



Hah. in Chretophora tuberculosa prope «Berndorf» et 

 «St. Poelten» Austria? inferioris (A. Grunow, Dr. Preydinger). 



Sectio V. Attenuat.I': Gom. Monogr. p. 224. — Tricliomata in parte apicali 

 evidenter attenuata plus minusve acuta, uncinata aut flexuosa, haud plane 

 spiralia (0. chalibed exGe]}tk); articuli diametro longiores aut breviores, nun- 

 quam brevissimi. Plantge non ultra 13 |i. crassse, vulgo tenues, hydrophilas 

 aut thermales, rarius halophilge, rarissime in terra uda crescentes. 



Subsectio 1. Cellula apioalis capitata. 



49. Oscillatoria splendida Grev. Flora Edinensis p. 305, 1824, Hook. 415 

 Engl. Fl. V, I, p. 375, Harv. Man. p. 1G3, Hass. Brit. Freshw. 



alg. p. 251, t. LXXII, f. 8, Gomont Mon. p. 224, t. VII, f. 7-8, J. 

 Schmidt Cyan. Dan. p. 74, Hold. in C, H. et Setch. Phyc. Bor. 

 Amer. n. 305! Gardn. in Coll., H. et Setch. Phyc. Bor. Amer. 

 n. 1161! Cieve in W. et N. n. 1191! Oscil laria graciUima Kuetz. 

 Phyc. gen. p. 184, Phyc. germ. p. 158, Sp. p. 239, Tab. Phyc. I, 

 p. 27, t. XXXIX, f. II, Rab. Fl. Eur. Alg. II, p. 97, Lynghya 

 gracillima (Kuetz.) Hansg. Prodr. II, p. 108, Oscillaria leptotricha 

 Kuetz. Phyc. germ. p. 157, Sp. p. 238, Tab. Phyc. I, p. 27, t. 38, 



