544 Myxophyceae, Scytoiiemacese, Tolypothrix. 



siphon Wimmeri Hilse in Rabenh. Alg. n. 17751 fide Borneti, 

 Tolypothrix coacUlis fonna fuscescens Aresch. Alg. scandinav. 

 exsicc. n. 291, Calothrix radiosa var. Marcucci Unio itineraria 

 cryptogamica n. III et IX! (suadente etiaiii cl. Grunow! in herb. 

 Forti), Calothrix radiosa Schiederm. in Rab. Alg. exs. n. 13051 

 (cfr. B. et Fl. Alg. exs. I, p. 372!) Kirchn. Alg. Schles. pag. 220 

 {Plectonemate mirabili parcius iinmixto), Tolypothrix distorta 

 var. Wood Prodr. p. 161, Contrib. p. 66, t. 8, f. I, Tolypothrix 

 CEgagropila var. muscicola Cool<:e Brit. Freshw. Alg. p. 269, Toly- 

 pothrix punctata Hass. Brit. Freshw. Alg. p. 240, t. 69, f. III, To- 

 lypothrix cegagropila [3 bicolor Wittr. et Nordst. Alg. exsicc. 

 n. 184 et 580! Tolypothrix Wimmeri Kirchn. Algenflora von 

 Schles. pag. 228, Borzi Morf. in N. G. Bot. ital. XI, p. 372, La- 

 gerh. in Wittr. et Nordst. Alg. exs. p. 487 ! Scytonema cerugi- 

 neum Lespin. Algues du Sud-Ouest (Actes de hi Societe linneenne 

 de Bordeaux 1883, p. 9), fide Borneti. — Fronde caespitoso-floc- 

 cosa, rarius in stratum pulvinatum exten.sa, ceruginea, letate pro- 

 vecta fuscescente; filis 2 centimetra altis, 9-12,5 [x. crassis, repetite 

 pseudoramosis; pseudoramis erecto-patentibus, flexuoso-curvatis; 

 vaginis membranaceis, tenuibus, ad basim ramorum plerumque 

 inflatis, hyalinis vel lutescentibus; trichomatibus circa 10 [i. cras- 

 sis, cylindricis, ferugineis; articulis diametro sequalibus vel longio- 

 ribus; heterocystis 1-4, saepius incoloribus. 



Hab. ad plantas submersas vel natans in aquis tranquillis Novic 

 Semliae (Wille), Norvegiiie (Nordstedtj, SuecicB (Aqardh, Are- 

 SOHOUG, Nordstedt), siuus Codani (Krok), Danite (Hofman-Bang, 

 LiEBMAN, RosENviNGE, ScHMiDT otc), insularum Faeroensium(LYNG- 

 bye), Islandise (Hariot), Anglia3 (Harvey, Bennett, West), Hi- 

 berniai (West), Belgii (De Wildeman), Hollandite superioris ad 

 Leeuwarden (Suringar), Fennicne (Elfving), Rossiie ad Mosquam 

 (Iwanoff) , Galliae (Bornet et Flahault, Belloc, Mougeot), 

 HelveticC (Wartmann, Waldvogel, Lorenzi, Forti), Germanice 

 (Kuetzing , A. Braun, Kirchner, Lemmermann , M. Schmidt, 

 RoYERS, P. Sydow) , Bosnise (Protic) , Istria^ , Tyroliae , Bohe- 

 miae, Carantani« (Schroder, Hansgirg), Austriae (Gkunow, Hans- 

 GiRG, Beck), Hungariae (Istvanffi), GalicicT3 (Gutwinski), Itali;e 

 (Maroucci, Martel, Garbini, Forti, Kirchner, Zanfrognini), 

 Groenlandise (Boergesen), Americas borealis (Wolle, Kincaid, Col- 

 LiNs). dit. x^Laskanqe (Saunders); ad oras insularum Antillarum 

 (Maze), Fuegise (Borge), Brasilise (Wittr. et Nordst.), insul. Cey- 



