Myxopliyceae, Schizotrioheae, Microcoleus. 377 



custris Rab. Crypt. Fl. von Sachsen p. 8-3, 1863, Fl. Eiu-. Al«,^ H, 

 p. 133, Phormidium congestum- Wolle exs. in Setch. Not. on 

 Cyanophyc. III, p. 53, Erythea (1892), p. 53. — Filis in stratum 

 nigro-an-ugineum intricatis, tortuosis, simplicibus aut vage ramosis 

 et apice bifidis; vaginis subtenuibus, mucosis et agglutinantibus, 

 interdum diffluentibus, apice seepius evanescentibus, chlorozincico 

 jodurato haud crerulescentibus; trichomatibus hiete jeruginosis, sub- 

 parallelis, extra vaginam rectissimis, ad genicula constrictis, 4-5 (j.. 

 crassis; articulis passim subdoliiformibus, diam. trichomatis paulum 

 vel ad 3-plo longioribus, -6-12 [x. longis, granulis refringentioribus 

 globulosis sparsim farctis; dissepimentis haud granulatis; cellula 

 apicali plus minusve obtuse, conica, haud capitata. 



Ilah. in aqua dulci prope Newton Americce foederatoe (Farlow), 

 in ditione Connecticut ad «North Haven» (Holden), in Pennsji- 

 vania et New Jersey (Wolle), in lacu «Bischotf» Franconia? 

 (Reinsch), in piscina prope Kufstein Tyroliae, in Bohemia, Austria 

 (Hansgirg) et in Bosnia (Gutwinski); ad Biskra Numidiae (Sau- 



VAGEAU). 



10. Microcoleus cataractarum Hansg. Ueb. neue Siissw. u. Meeres- 91'? 

 algen 1890, pag. 15. — Strato minutissimo, aliis algis adfixo ; 

 filamentis rectis leniterve incurvis, 2-4 (raro 1 vel pluribusj intra 

 vaginam gelatinosam communem, tenuissimam, hyalinam fascicu- 

 latim consociatis, fasciculis ssepe Schizotrichis more ramosis; fila- 

 mentis singulis vagina propria tenui, arcta, hyalina donatis, circiter 

 2-2,5 [1. latis, distincte articulatis; cellulis Y^-1 longis quam latis, 

 contentu dilute caeruleo-viridi, non vel vix granulato. 



Hah. in cataractis frigidis prope «Laibach» ad Lemaneam 

 fluviatilem et Inactidem, socia Oncobyrsa rivulari 

 (A. Hansgirg). 



11. Microcoleus sociatus W. et G. S. West Welw. Freshw. Afr. Alg. 918 

 in Journ. of Bot. 1897, p. 272. — Filamentis sparsis, simplicibus, 

 elongatis et flexuosis; vaginis firmis, hyalinis, apice apertis, 54- 



65 tJL. diam.; trichomatibus multis (9-13) intra vaginam, subparal- 

 lelis vel contortis, 2,7-3 [i. diam. ad dissepimenta constrictis; dis- 

 sepimentis non granulosis; cellulis diam. 2-3-pIo longioribus, cy- 

 lindricis; contentu granuloso; cellula apicali acute conica (diametro 

 circiter 5-pIo longiori). 



Hdb. Huilla Africie inter Schizotrichem natantem et Microspo- 

 ram Lofgrenii, in uliginosis editioribus prope Humpata, Empalanca 

 et LopoIIo ( Welwitsch;. 



