236 MyxophycoEe, Lyngbyere, Phoi-midium. 



iion capitatis, 3-4,5 |x. crassis; articiilis subquadratis vel diam. fere 

 2-plo longioribus, 3,5-8 [a. longis, granulis refringentioribus haud 

 frequenter farctis; dissepimentis non granulatis; cellula apicali 

 obtuse conica; calyptra nulla. 



Hah. ad saxa irrorata in rivulis pra'cipue alpinis, truncos humiilos 

 arboruni et tecta straminea Suocioe (Agardh, Wittrock, Nordstedt), 

 Norvegia' (Lyngbye, Nordstedt), Danin3 (Hofman-Bang, Lyngbye, 

 J. ScHMiDT), AngliiB (Hassall, Cooke), Scotia? (Greville), Hiberniie 

 (Mackay), Galliai (Brebisson (?), Gomont), Silesi* (Hilse), Saxoniffi 

 (Rabenhorst), Holsatia^ in la^ubus et stagnis (Lemmermann), Yir- 

 tenbergiai (Kirchner), Bohemiae (Rabenhorst, Hansgirg), Austrioe 

 (Stockmayer), Carinthite (Hansgirg), Galiciii^ (Gutwinski), Tirolire 

 (Hansgirg, Dalla Torre), Dalmatiaj (Schmidle), Venetia? (Martens), 

 Patavii in horto botanico (De Toni), Euganeorum (Meneghini), 

 LigurisB (Strafforello), Algerite (Debray), Americ;e septentrionalis 

 (Bailey, Farlow, Collins), ditionis Alaskanse (Setchell, Saun- 

 ders), Groenhmdia) (Boergesen) et Novfie Zelandia^ (Berggreen). 

 — Var. tenuior Rab. Fh Eur. Alg. H, p. 1-26: strato obscure 

 serugineo-chalybeo; trichomatibus circ. 9 [x. diam. Passim cum 

 typo. — Var. aeruginea Kuetz. Sp. Alg. p. 257 (absque nomen): 

 strato obscure a-rugineo. Passim cum typo (Kuetzing). — Var. 

 inaequale Naeg. in Kuetz. loc. cit, nec Rab. nec Hepp: strato nigro; 

 trichomatibus rectis, mobilibus, 8-10 [i. diam.; articulis diam. usque 

 2-plo brevioribus, lineola mcdia dimidiatis. In aquneductu ad Fri- 

 burgum SuevicTe (Braun). An forsan Oscillatorice tenuis trichomata 

 aliis cum trichomatibus differentis speciei mixta? 



40. Phormidium IVIoerlianum Grun. in Rab. Fl. Eur. Alg. H, p. 127, 

 Putsch et Schiederm. Syst. Aufz. p. 21. — Strato obscure brunneo, 

 mucoso, minus compacto, brcviter radiante; trichomatibus leviter 

 curvatis, fuscis, rarius sordide airugineis, 9-12 [i. crassis; articulis 

 diametro 2-plo vel 4-plo brevioribus, ad genicuhi granorum serie 

 duplici ornatis, medio transversim subtiliter punctatis, apiculo recto 

 rotundato barbato; vaginis laxe coha^rentibus achrois. 



Hah. in stagnis putridis prope « Voecklabruck » Austrirc (Morl). 



41. Phormidium solitare (Kuetz.) Rabenh. Fl. Eur. Alg. H, p. 127, 

 Lynghya solitaris Kuetz. Sp. Alg. p. 279 et Tab. Phyc. I, t. 86, 

 Kirchn. Alg. Schl. p. 242, Ph. Rotheanum Rz. in Rab. Alg. exsicc. 

 n. 206! — Filamentis sparsis subsolitariis aut in stratum tenue, 

 obscure aerugineum intricatis; trichomatibus rigidis, llexuosis, di- 

 lute aerugineis, 6,5-7,8 [x. crassis, interdum longitudinaliter plicatis, 



