378 Myxopliyceee, Schizotrioheae, Microcoleus. 



12. Microcoleus delicatulus W. et G. S. West New Brit. Freshw. Alg. 919 

 in Trans. of tlie Roy. Microsc. Soc. 1896, p. 164. — Filamentis 

 sparsis, simplicibus; vaginis mucosis, achrois, apice evanescentibus; 

 trichomatibus subparallelis, subcontortis, 1,5-2,0 jjl. diani., permultis 



in singula vagina 45 [i. crassa consociatis; articulis diam. paalo 

 longioribus; dissepimentis distinctis, non granulatis; cellula apicali 

 obtusa. 



Hab. «Glen Tummel, Perthshire» Scotire (West) et in Hibernia 

 (West). — Microcoleo tenerrimo peraffini. 



13. Microcoleus subtorulosus (Kuetz.) Gom. Ess. p. 352, Monogr. 920 

 p. 360, t. XIV, f. 14-15, J. Schmidt Cyan. Dan. p. 54, Phormi- 

 dium suhtorulosum Breb. in Kuetz. Tab. Phyc. I, p. 35, t. 49, 



f. V, Rab. Fl. Eur. Alg. II, p. 122, Lynghya suhtorulosa Kirchn. 

 Alg. V. Wilrttemb. p. 197, Hansg. Prodr. II, p. 101 (sensu latiori), 

 Wolle Freshw. Alg. of U. S. p. 300, t. CCII, f. 3-4. — Strato 

 chalybeo, plantas aquaticas limumve obducenti; filis subamorphis, 

 fragilibus; vaginis valde mucosis, agglutinantibus, chlorozincico 

 jodurato coerulescentibus ; trichomatibus intra vaginam plerumque 

 numerosis, parallelis, rectis, ad genicula eximie constrictis, apicem 

 versus interdum longissime attenuatis, 6-10 [x. crassis; articulis 

 subquadratis, passim doliiformibus, granulis refringentioribus spar- 

 sis farctis; cellula apicali conica vel cylindraceo-conica, haud ca- 

 pitata. 



Hah. prope «Lund» SueciiB (Agardh), in insula Fionia (Clau- 

 sen), in Scotia (Greville), Gallia prope «Falaise» (Brebisson) et 

 in fontibus prope Rouen (Gomont), Helvetia ad « S. Gall » (Wart- 

 mann), in thermis Badensibus (Pokorny, Beck), ad Polam Istriae 

 (Druiz); prope Otranto Italioe (Rabenhorst) et in Florida Amer. 

 bor. (Wolle). 



Species non satis notse. 



14. Microcoleus oligothrix (Kuetz.) Chfhonohlastus oligothrix Kuetz. 921 

 Spec. p. 261, Tab. Phyc. I, p. 38, t. 55, f. III, Rab. Fl. Eur. Alg. II, 



p. 135, nec Crouan. — Strato tenuissimo, dilute cinereo-viridi, 

 subserugineo, subcompacto, ex vaginis amplis, variis, hyalinis, fi- 

 brosis, achromaticis, trichomata pauca, tenerrima, rigidula, 4,5 [a. 

 crassa, seruginea includentibus composito. 



Hah. in Istria, Carinthia (Hansgirg), in ins. Cuba in muris calca- 

 reis (MoNTAGNE, Kuetzing); ad «Tabotanga» Amer. mer. (Dickie). 



