438 Myxophyceae, Heterocystideae, Anabsena. 



Ral). Alg. exs. n. 204, Flora Europ. Alg. II, p. 192, p. p., Spha^- 

 rozyga fiexuosa Desm. Pl. cryptog. de France 2" serie, fasc. XI, 

 n. 544 (fide Bornetii), Anabcena Tliwaitesii Crouan Fl. du Finist. 

 p. 110, 1867, Le Jol. Alg. mar.de Cherb. n. 241 nec Angl., SphK- 

 rozyga variahilis var. subsalsa Manoury in Rabenhorst Alg. exs. 

 n. 2186! Anabcena indica Zeller in Kurz Alg. coUect. in Arracan 

 (1873) p. 180, Rab. Alg. exs. n. 2337!, Anabcena oscillarioides 

 Cooke British Freshw. pag. 238, tab. 9, fig. 6, 1884, excl. syn., 

 Wittr. et Nordst. Alg. exs. n. 196! — Strato gelatinoso, ad terram 

 expanso vel libere natante, atro-viridi; trichomatibus flexuosis, 

 4-6, snepius 4,2-5 [i.. crassis, plerumque evaginatis, cellula termi- 

 nali obtuse conica; articulis doliiformibus, 2,5-6 [i.. longis vel sub- 

 quadratis, geniculis parum constrictis; heterocystis sphciericis vel 

 ovalibus, 8=^6 [x.; sporis ovalibus, apicibus truncatis, plurimis 

 catenatis, 8-14 =!> 7-9, ab heterocystis remotis, evolutione centrifuga, 

 episporio in sporis maturis levi, luteo-fusco. 



Hab. in aquis subsalsis vel dulcibus, quietis Islandia? (Hariot), 

 Suecige (Nordstedt), Daniae (Rosenvinge, Warming, Poulsen), 

 ins. Faeroensium (Burgesen), Germanice (KiiTziNG, Rabenhorst, 

 Hantzsch, Kirchner, Lemmermann, Reinke, Reinbold etc), An- 

 gli;e (Ralfs, Cooke, Bennett, West, Batters), Hiberni;e (W. Ar- 

 NOTTj, Scoti?e in aestuario fluvii Clyde (Batters), Neerlandise (Van 

 DEN Bosch), Galicine (Gutwinski), Hungarite in lacu Bahiton (Ist- 

 VANFFi), Poltawa (Alexenko), Bohemiiie (Hansgirg), Austriie (Lo- 



ITLESBERGER, V. MoRL, SCHIEDERMAYr), Bclgii ( De WiLDEMAN ) , 



Galliae (Bornet, Mougeot, Flahault, Herissal), Helvetia^ ad « S. 

 Gall » (Wartmann), in « Liitzelsee » ad Turicum (Waldvogel, 

 FoRTi), Italiae prope Viterbo (Kuetzing), in Benaco (Garbini), 

 Algerise (Durieu), Indiae (Kurz); in regione Sinensi (Rabenhorst); 

 ad « Watch Hill, R. I. » Amer. bor. (Wolle, Setchell), «National 

 Park » Minn. Amer. bor. (Tilden) et Novae Anglite (Collins), Bra- 

 sili;e (Moebius) « Maluhi;i » ins. Oahu (Schauinsland). — Forma 

 mareotica llansg. Pflanzenbiol. Unters. (1904) p. 220: strato sor- 

 dide ajrugineo, 0,5-2 cm. diam., libere natante, trichomatibus saepe 

 parallelis, 3-4 [j.. crassis, evagin;xtis aut intra vaginas inconspicuas 

 inclusis, 5-6 [x. latis; articulis diametro usque sesquilongioribus; 

 heterocystis roseolis, 4-5 |x. crassis, interc:ilaribus. — Prope Ale- 

 xandriam .Egypti (Hansgirg). — Forma africana Wille Ueb. einig. 

 von J. Menyhardt in Sudafr. ges. Alg. p. 3: sporis ovalibus, 8-12 [j.. 

 longis, 6 [1. diam., pluribus seriatim consociatis; articulis 5-8 [x. 



