Myxophyceae, Scytonemacese, Scytonema. B23 



p. 16, t. II, 1852, Flora XI, p. 454, Sauter in Rab. Alg. n. 267! 

 Scytonema vasconicum Lesp. Mont. in Ann. des Sc. nat. lVser.,Bot., 

 VI, p. 185 (1856), Scytonema gracile fornia b crassior Rab. Fl. 

 Eur. Alg. II, p. 251, Scytone/na Myoclwous c. (iexuosum Rab. Fl. 

 Eur. Alg. II, p. 254, Scyt07iema Myochrous f. heloeticum Rab. 

 Fl. Eur. Alg. II, p. 255, Scylonema Myochrous g chlorophceum 

 Rab. Fl. Eur. Alg. II, pag. 255, Scytonema alpinum Menegh. in 

 Rab. Fl. Eur. Alg. II, p. 255, Scytonema calaractce Wood Pro- 

 drom. p. 129, Contrib. p. 62, Hedwigia X, p. 139, Wolle Freshw. 

 Alg. of U. S. p. 252, t. CLXXXIII, f. 1-4 et in Rab. Alg. exs. 

 n. 2492! Scytonema Brandegei Wolle in Bull. of Torrey Bot. 

 Cl. (1877) p. 184, Freshw. Alg. U. S. p. 252, t. CLXXXIII, f. 1-4. 

 — Strato pannoso, late longeque expanso, spongioso, tonientoso, 

 fusco-nigro vel nigro-virescente, filis tortuosis, intricatis, 2-15 min. 

 longis, 18-36 [i. crassis; vaginis lamellosis, luteo-fuscis, lamellis 

 divergentibus, superne ochreatis, in vertice cellulse ultimse crassis ; 

 trichomatibus 6-12 [i-. crassis, luteo-viridibus; articulis inferne lon- 

 gioribus, cylindricis, superioribus discoideis, heterocystis subqua- 

 dratis aut longioribus quam latioribus, fuscis; sporis globosis, 

 luteo-fuscis. 



Hab. in terra humida, muris et rupibus madore continuo irri- 

 gatis Suecise (C. Agardh, Hornemann), Fenniae (Elfving), Norvegite 

 (Areschoug, Nordstedt,, Belgii (De Wildeman), Anglia; (West), 

 Gallice, praecipue australis (Lamy de la Chapelle, Bornet et Fla- 

 hault, Mouqeot, Gomont), Helvetiae (A. Braun, Naegeli, Schenk, 

 Wartmann, BRiiGGER, Killias, Cramer, Sghleicher, Hepp), in 

 lacu Constantise (Kirchner), Germania; (Kuetzing, Rabenhorst, 

 Kirchner, Richter, Reinsch, Lemmermann etc), Austrice (Kuetzing, 

 ZuKAL, Hansgirg, Beck, Schiedermayr, Heufler, Loitlesberger, 

 Stockmayerj, Dalmati», Istriae (Hansgirg, Beck), Carinthi* (Han- 

 SGiRG, Simmer), TyroIi;e (Heufler, Kravogl, Unger, Hansgirg, 

 Dalla Torre), Hungari;ie (Schliephake), Bohemia; (Hansgirg, 

 ScHROEDER, Lemmermann), Polonite (KozLowsKi), Galici;e (Gut- 

 winski, Hausmann), Bosnia3 (Protk;; Italice (Anzi, Erbar. Crittog. 

 ital., Kuetzing, Grilli, BoRzi, De Toni, Kirchner, Forti), Hi- 

 spaniie (Grunowj, Alaskae (Saunders), Nov^ie-Anglise (Wood, Wolle, 

 Farlow), Coloradi in montibus Petrosis (Wollej et in chata- 

 racta «Niagara» dit. Canadensis (Wood), Pennsylvani;e, Carolime 

 borealis (Ravenel) «Twinlakes» (Holden), ins. Bermudiensium 

 (Farlow), .Equatori;e (Lagerheim), Indiie (Turner, Hansgirg, 



