Myxophyceoe, Lyngbyeae, Phormidium. 227 



collectum ct ad typiiin referenduni !), Lynghya compacta var. sym- 

 plociformis (Grun.) Hansg. Prodr. II, p. 88: strato crassiori, aspe- 

 rato, lauiellis verticalibus crassis vel cxcrescentibus praedito. In 

 fluiuine «Raab» ad Yindobonam (Heufler); in IJoliemia ad «Leit- 

 meritz » (Hansgirg). 

 10. Phormidium tenue (Metiegh.) Gom. Monogr. p. 169, t. IV, f. 23-25, 591 

 Johs. Schm. Cyan. Dan. p. 65, Butl. et Poll. in Coll., H. et Setch. 

 Phyc. B. Am. n. 1005, Nott in Coll. H. et Setch. n. 606, Schmula 

 in H. et Richt. Phyc. Univ. n. 646, non Rab. Fl. Eur. II, p. 128, 

 Anahaina tenuis Menegh. Consp. Alg. Eug. p. 8, 1837, Leptothrix 

 Sdhtiliasima Cesati in Rab. exs. n. 248! Kuetz. Tab. Phyc. I, t. 65, 

 Phormidium suhlilissimum Levi Phycoth. Ital. n. 1961 Oscillaria 

 detersa Stizenb. in Rab. exs. n. 1730 (fide Gom.), Rab. Fl. Eur. 

 Alg. II, p. 96, Wolle Freshw. Alg. of U. S. p. 210, Hypheothrix 

 suhtilissima Rab. Fl. Eur. Alg. II, p. 77, Lynghya stthtilissima 

 Hansg. Prodr. II, p. 87. — Strato hete a^rugineo, tenui, mem- 

 branaceo, expanso; filis elongatis, subrectis vel leviter curvulis, 

 dense intricatis; vaginis tenuibus plerumque inconspicuis in mucum 

 fibrosum demum difHuentibus, chlorozinc. jodur. cajrulescentibus ; 

 trichomatibus Ia,'te leruginosis, rectis, ad genicula leviter constrictis, 

 pleruuKiue indistincte articulatis, apice initio rectis, deinde uncinatis 

 et attenuatis haud capitatis, 1-2 jj.. crassis; articulis diam. tricho- 

 matis usque 3-plo longioribus, 2,5-5 [j.. longis, ad genicula leviter 

 constrictis; contentu homogeneo; cellula apicali demum acute co- 

 nica; calyptra nuUa. 



Ilah. algis permixtum aquas dulces et thermales et terram 

 liumidam in Gallia (Gomont), Anglia (West), Austria prope «Vuckla- 

 bruck » (Morl), Bohemia (Hansgirg), Germania (Stizenberger), 

 Franconia (Reinsch), Suecia (J. Agardh), ins. Fionia (Vahl), Italia 

 ad thermas Euganeas (Meneghini, Levi), prope Vercellas (Cesati) 

 et ad Patavium (De Toni), ad «Edinburg» Scotiae (Gregory); in 

 aquis dulcibus, ad Mehadiam Hungariae (Grunow) et ad lacum 

 Balaton (Istvanffi) ; in Rossia prope Moscoviam (Iwanow), Nu- 

 inidia (Debray), Asia centrali (Hirn), Canada (Butler et Polley), 

 Nova Anglia (Farlow, Anderson, Nott); in stagno ad « Luray Cave 

 Va. » (Wolle), « National Park » (Tilden) et Nebraska .\mer. 

 bor. (Bessey), insulis «Samoa» (Schmidle) et in terra Francisci 

 Josephi (Borge), — Var. tingens (Stockm.), Oscillaria detersa 

 var. iingens Stockmayer in Beck Fl. v. Siidbosn. und angrenz. 

 Hercegov. IV, p. 5 (343): filainentis 2 jj.. cra.ssis, exsiccatioiic chartam 



