Myxophyceae, Schizotrichege, Microcoleus. 373 



tano (Gennari, Cavara, Piccone), maris Adriatici (Hauckj, lio- 

 snia', Istriai, Dalinatiie (ITansgirg), insiiho «Ceylon» (Fergusgn), 

 Ainerica; fcBderatie ( Farlow, Holden, Collins), ins. Whidbey 

 ((tArdner), Janiaica! (Collins), Cab;e (De la Sagra), Rrasiliae 

 (Glaziou), Uruguayce, Arpjentin;e (Wille), Terne Imperatoris Gui- 

 lelmi (Lauterbach), Jav^e (Von Martens), Australiai boreali-orien- 

 talis (Exp. Gazelle). 

 ^. Microcoleus tenerrimus Gom. Monogr. pag. 355, t. XIV. f. l-ll, 910 

 Johs Sclim. Cyan. Dan. p. 53, Saunders in Coll., H. et Setch. Phyc. 

 Bor. Amer. n. 706! Microcoleus oligotlirix Crouan in Schr. et 

 M. Ess. pag. 30, II ed., pag. 20, Microcoleus salinus Hansg. 

 in W. et N. Alg. exs. fasc. XIV, n. 696, 1884. — Filis in stratum 

 griseo-ierugineum dense intricatis aut variis algis permixtis, sim- 

 plicibus vel parce pseudoramosis; vaginis amplis, ambitu irregula- 

 ribus, apice acuminatis et apertis, interdum omnino diffluentibus, 

 chlorozincico jodurato non coerulescentibus; trichom:itibus viridi- 

 olivaceis, intra vaginam plus minusve numerosis, eIongatis,fiexuosis, 

 vulgo sublaxe aggregatis, ad genicula eximie constrictis, npice stepius 

 longissime attenuatis, 1,5-2 jx. crassis; articulis diam. longioribus, 

 2,2-6 [1. longis; dissepimentis pellucidis, haud raro grannlatis; 

 cellula apicali acutissime conica. 



Hab. ad litora Danioe prsesertim socia Calotriche (Mortensen, 

 Warming, Rosenvinge), ins. Fa^roensium (Boergesen), Angliae (Bat- 

 TERs), Galli;Te septentrionalis (Debray) et occidentalis ad Le Croisic 

 (Gomont;, ad pascua salina Bohemiie (Hansgirg), Bosnia- (Gut- 

 wiNSKi), Austrite (Stockmayer), in lacu subsalso, sociis Phormidiis, 

 «Pontchartiain J> dicto dit. «Louisiana» America? fosderatse (Saun- 

 DERs), et ad litora Guadalup» (Crouan), Jamaicne (Collins), ins. 

 « Whidbey » (Gardner), « Moreton Bay» Australise (Askenasy). 

 4. Mlcrocoleus hospita Hansg. Ueb. neue Siissw. u. Meeresalgen 1890, qu 

 p. 15. — Strato endophytico; filamentis 2-8-16, raro singulis vel 

 ultra 16 in fasciculos vagina gelatinosa communi, arcta, hyalina 

 tenui cinctos congregatis, vagina propria 0,7-1-1.5 [j-. lata, saepe 

 indistincte articulatis, ad apices siepius attenuatis, plerumque ro- 

 strato-productis ; cellulis vegetativis 1-2 '/, longioribus quam la- 

 tioribus, contentu pallidissime caerulescenti-viridi, subtiliter gra- 

 nulato; fasciculis (6 filam. et ultra) 6-10 [x. latis. 



Hab. in mari Adriatico in Rivularia atra ad « Pola, Fa- 

 sana, Orsera et Pirano» Istrise; in aqua dulci in thallo Rivu- 

 larise rufescentis et R. haematitis, nec non in Carniola 



