284 Myxopliycese, Lyngbyese, Lyngbya. 



ginea Rab. Alg. exs. n. 3871 Sphcerotilus ochraceus Breb. in 

 Kuetz. Sp. Alg. p. 147, Zeller in Rab. Alg. exs. n. 208G! — Filis 

 tenuissimis in stratuni luteo-ochraceuni intricatis, plus minusve 

 curvatis, fragilibus; vaginis initio tenuibus, liyalinis, demuni crassis 

 et ochraceis, chloroz. jodur. non cierulescentibus; trichomatibus iBru- 

 gineis, frequenter interruptis, eximie torulosis, 0,9 ^. crassis; arti- 

 culis diam. trichomatis brevioribus 0,6-0,8 [j.. longis; dissepimentis 

 haud granulatis; cellula apicali rotundata, calyptra nulla. 



Hah. fontes paludesque ferrugineas Gallife Ardiiennarum (Bre- 

 BissoN, LiBERT, Thuret, Gomont, Belloc, Marissal), ItalicB ad 

 Romam (Fiorini Mazzanti), prope Abellinum (Trotter, Forti) 

 et in lacu Benaco (Kirchner); in lacu Constantife et passim in 

 Helvetia (Kirchner, Duggeli), in Germania (Kuetzing, Rabenhorst, 

 Kirchner), Bosniie (Protic), Suecia (Nordstedt), Dania (Kiaerskou), 

 Anglia (Bennett, Cooke, Johnston, Gray, W. et G. S. West), 

 Scotia (Greville, Harvey), Islandia (Hariot), India (Rabenhorst), 

 Africa boreali ad «Tingin» (Schousboe), in Algeria (Sauvageau) 

 et America foederata (Wolle, Collins, Tilden, Bessey, Farlow). 

 — Species haec est valde singularis, at dubiis multis vexata et 

 quoad synonymiam et quoad locum in systemate naturali nunc 

 Bacteriaceis h. e. Leptotrichaceis, nunc genuinis Myxophyceis ad- 

 scripta. 



44. Lyngbya nana Tilden Am. Alg. Cent. II, n. 179, Bot. Gazette 1897, 686 

 p. 101, Tab. IX, f. 5. — Strato extenso calcicola; filamentis rectis, 



2 [x. diam., vaginis delicatis, hyalinis, levibus; trichomatibus palli- 

 dissime chalybeis, demum violaceis, ad genicula non constrictis; 

 articulis 1,5 {x. diam., quadraticis aut diam. paullo brevioribus; 

 cellula apicali rotundata. 



Hab. rupibus adfixa in Minnesota Am. bor. (Tilden). — A 

 Lynghya Rivulariarum et purpurea, strato sspe calce incrustato 

 distincta dicitur. 



45. Lyngbya purpurea (Hook. et Harv.) Gom. Monogr. p. 149, Oscil- 687 

 latoria purpurea Hook. et Harv. Lond. Journ. of Bot. IV, p. 297, 

 1845, Crypt. Bot. of antarct. Voy. of the Erebus and Terror 



p. 190. — Strato gelatinoso, siccitate translucenti, purpureo; filis 

 tenuissimis, hyalinis, papyraceis, chlorozinc. jodur. non csBrulescen- 

 tibus; trichomatibus violaceis, ad genicula haud constrictis, 1,4- 

 1,8 [1. crassis; articulis subquadratis. 



Hah. rivulos ins. « Kerguelen » oceani Pacifici (Harvey). 



46. Lyngbya Digueti Gomont in Hariot Alg. de Californie (1895), G88 



