248 Myxophyce.T2, Lyngbyeae, Phormidinm. 



Coviuni Reinsch in Rab. exs. n. 1915! Pliorni. membranaceum 

 ^j symplocarioides Grunow in W. et Nordst. Alg. exs. n. 7811 — 

 Strato late expanso, atro viridi aut nigro olivaceo, pannoso, tcnui, 

 lanielloso; filis rectis, fragilibus, abbreviatis, parallelis; vaginis in 

 mucum lamellosum diffluentibns, agglutinatis, chlorozincico. jodu- 

 rato non ccerulescentibus; trichomatibus obscure feriigineis non 

 torulosis, 7-11 [-t. crassis, apice rectis, capitatis, plus minusve bro- 

 viter attenuatis; articulis diam. trichomatis 2-i-plo brevioribus, 

 rarius subnuadratis, 2-4 (j.. longis, coutentu deuse granuloso farctis; 

 dissepimentis lineis binis punctatis granulatis; cellula apicali ca- 

 lyptram rotundatam aut recte conicam pm^bente. 



Ilah. in rivulis et cataractis saxis adhserens lignisve in aqua 

 dulci submersis vel etiam irroratis tantum affixum in Succia (C. 

 Agaedh, J. Agardh, Nordstedt, Witteock), Norvegiam (Nordstedt), 

 Daniam (Liebman, Hofman-Bang, J. Schmidt), Hiberniam (West), 

 Galliam (Lamy de la Chapelle, Debray, Marissal, Mougeot, 

 Gomont), Germaniam (Kuetzing, Royers, Kirchner), Austriani 

 prope « Vucklabriick» (Morl) et passim (Grunow, Hansgirg, Stock- 

 MAYER, Beck, Schiedermayr), Tyroliam (Hansgirg, Dalla Torre), 

 Dalmatiam, Montenigrum (Schmidle), Bohemiam, Istriam, Carin- 

 thiam (Hansgirg), Bataviam (Sueingar), Franconiam (Reinsch), 

 Galiciam (Gutwinski), Brisgoviam (A. Braun), Hungariam (Ist- 

 vanffi), Helvetiam (Gomont, Theobaldj, Italiam (Ardissone, Me- 

 NEGHiNi, Martel, Zanfrognini, Grilli), ins. Elbam (Schroeder), 

 Bosniam (Beck, Stockmayer, Gutwinski), Algeriam (Oebray, Du- 

 rieu), insulam «Mauritius» (Jadin), ditionem Massachussetts (Col- 

 LiNs) et prope «Charlotte» ditionis Vermont Amer. bor. (Hosford), 

 Campos Mexicanos prope Orizaba (MiiLLER) et Brasilienses (Puig- 

 GARi). — Var. Joannianum (Kuetz.) Gom. Monogr. loc. cit., Osterh. 

 in Coll., H. et Setch. Phyc. bor. Amer. n. 352! Schrud. in W., N. 

 et Lag. Alg. exs. n. 1530! Arechav. in W. et N. Alg. exs. n. 1180! 

 Phorm. Joannianum Kuetz. Phyc. gener. p. 193, 1843, Sp. p. 253, 

 Tab. Phyc. I, p. 34, t. 47, f. VI, Gom. in Journ. de Bot. IV, p. 355, 

 Lijnghija Joanniana Hansg. in Wittr. et N. Alg. exs. n. 777! 

 Prodr. II, p. 105, Microcoleus Brehissonii (Kuetz.) Hansg. [3 ceru- 

 gineus (Rab.) Hansg. Prodr. II, p. 79: trichomatibus 5,5-8 [a. cras- 

 sis. Cum typo, — Var. membranaceum Rabenh., FI. Eur. Alg. II, 

 p. 125: forma strato submembranacco, a^rugineo-chalybco, substrato 

 decolorato subnullo. Iii torrentibus rivulisque saxa, lapides mu- 

 rosque obducens, passim, cum typo (Schiedermayr). — Var. inae- 



