Myxopiiyceae, Stigonemaceae, Stigonemd. 58?^ 



Born. et Flah. Rev. III, p. 72, Wolle in Wittr. et Nordst. Alg. 

 exs. n. 669! (fide Hieron), Hansg. Prodr. II, p. 23 c. ic, Hy et 

 Flah. in W. N. et Lag. Alg. exs. n. 1313! Lagerh. in W. N. et 

 Lah. Alg. exs. n. 16081 Schmidle in Hedwigia 1900, p. 180, t. 9, 

 f. 9-12, Scytonema mmutum Ag. Synops. p. 117, Syst. pag. 39, 

 Sirosiphon crustaceus Rabenh. Alg. exs. n. 1334! Fl. europ. Al- 

 gar. II, p. 289, Sirosiphon acervatus Wood Prodr. p. 133, Con- 

 trib. pag. 74, tab. 9, fig. II, SirosipJion lignicola WooJ Contrib. 

 p. 72, pl. IX, f. II, Wolle Freshvv. Alg. of U. S. p. 273, t. CXCIII, 

 f. 1-2, Stigonema crustaceum Kirchn. Algenfl. v. Schles. p. 230, 

 Borzi Morf. iii N. G. Bot. ital. vol. XI, p. 383, Si^^osiphon silve- 

 stris Itz. et Rothe in Rab. Alg. Aq. d. exs. n. 669 (sententia cl. 

 Hieronymi sed cl. Born. et F'l. hanc speciem potius lichen quodara 

 sistere putant), Sirosiphon variahilis Bleisch in Rab. Alg. exs. 

 n. 1191 a&! — Strato tenui, crustaceo vel pulvinato, nigro, fra- 

 gili; filis a basi decumbente ascendentibus, mm. circiter altis, 

 18-28 (1. crassis, fiexuoso-curvatis, ramosis; ramis nunc loagis 

 filo primario conformibus, nunc brevissimis hormogouiiferis, ssepius 

 unilateralibus, confertissimis; vagina lutea vel luteo-fusca, lamel- 

 losa, tegumento interno cellularum frequenter saturatius colorato; 

 articulis inferioribus haud raro siinplicibus, mediis et superioribus 

 ssepe cellulis pluribus (2-4) compositis; heterocystis numerosis, 

 lateralibus aut intercalaribus; hormogoniis brevibus, 25-35=^12- 

 15 [1. 



Hab. ad rupes, saxa, muros et ligna Norvegise (Hornemann, 

 Agardh), Fennire (ELFViNa), Sueciie (Aqardh, LYNaBYE, Borge), 

 Danise (Hornemann), ins. Faeroensium (Boergesen), Anglire (Thwai- 

 TES, Bennett, West), Hiberniae (West), Gallia3 (Bornet, Lamy, Hy, 

 Flahault), Helvetise et Germanife^ (Kuetzing, Itzigsohn, Raben- 

 HORST, Naegeli, Kirchner, Lemmermann, M. Schmidt, Waldvogel!), 

 AustrisB (Grunow, Simmer, Hansgirg, Resch, Diesing, Loitlesber- 

 ger), Bohemicne (Hansgirg), in Sphagnis ad Bieno Italiae (Martel), 

 Riesenbirge (Schroeder), «Koh-Chang» (J. Schmidt), ad Matheran 

 Indiai prope Bombay etc. (Hansgirg) et in Bengalia (Turner), 

 Africa3 centralis (Welwitsch), Groenlandice (Boergesen), Americ.e 

 foerleratsB (Wolle, Ravenel, Farlow) dit. Alaskamie (Saunders), 

 Minas Caras>;a Brasiliffi (Wainio) et insularura Sandvicensiuni 

 (Berggren, Schauinsland), ins. Domiuicae (West), Javre (Massartj. 

 — Sporge, sec. Schraidle, saepius acrogenae aut in ramis brevibus 

 lateralibus sitas aut basilares, haud raro in filamento interiectfe, 



