Myxopliyceae, Heterocysfcidege, Aphanizomenon. 469 



W. N. et Lag. Alg. exs. n. 1342! Gardn. in C. H. et Setch. Phyc. 

 l?or. Amev. n. 1107! Richter Beitr. zur Phykologie I (in Hedwigia 

 1896, p. 263), Born. et Fl. Rev. IV, p. 241, Lemmerm. Beitr. Plankt. 

 VII (1900) p. 141, f. 1, Bi/ssus Flos-aquce L. Sp. n. 1168 (1753), 

 Confevm Flos-aqucE Roth Cat. bot. III, p. 192, 1806, Anaha^na 

 Flos-aqna^ Bory Dict. I, pag. 309, 1822, Splmrozyga Flos-aquce 

 Corda in Ahn. de Carl. V, p. 218, Rab. Kryptog. v. Sachsen p. 100, 

 FI. Eur. Alg. II, p. 195, Alg. exs. n. 1463! Nave in Rab. Alg. exs. 

 n. 1336 &I Reinsch Algenfl. von Franken p. 48, Borzi Morf. e Biol. 

 delle Alghe ficocr. in N. G. B. I., X, p. 279, Limnanthe LinncBi 

 Kuetz. in Linnfea XVII, pag. 86, 1843, Limnochlide Flos-aqucB 

 Kuetz. Phyc. gen. p. 203, Sp. Alg. pag. 286, Tab. phyc. I, p. 49, 

 t. 91, f. II, Roem. Alg. Deutschl. p. 47, f. 187, Rab. Alg. exsicc. 

 n. 216! Cram. Algologische Notizen in Hedwigia p. 66, Colmeiro 

 Enum. de las crypt. de Espana y Portugal p. 245, Magnus Das 

 Auftr. von Aphanizomenon Flos-aquae im Eise bei Berlin in Ber. 

 der Deutsch. Bot. Ges. I, p. 129, Limnochlidc Flos-aqucB var. v 

 Harveyana Kuetz. Sp. Alg. p. 286, (fide Borneti), Limnochlide 

 Flos-aquce var. fulva Auerswald in Rab. Algen n. 415! — Thallis 

 minimis, in squamulas membranaceas, facile secedentes acjgregatis; 

 trichomatibus rigidis, 5-6 (i. crassis, utrinque sensim attenuatis; 

 articulis subquadratis, 5-15 \l. longis; heterocystis subcylindricis, 

 6-7 [X. crassis, 15-20 \l. longis; sporis cylindricis elongatis, 7-8 [j.. 

 crassis, 60-80 [j-. longis, contentu granuloso, vacuolis aprogenis con- 

 ferto, episporio levi, hyalino. 



Hab. libere natans in stagnis plerumque aqufe dulcis sed etiam 

 in aqua salsa Rossice ad Moscoviam (Iwanofp) et in flumine 

 «Wolga» (Bolochonzew), Fenniae (Elfving, Levander, Hirn), 

 Suecise (Wahlenberg, Wittrock, Lagerheim, Lemmermann, Nord- 

 STEDT, Borge, Hirn), AnglicHe (Cooke, West, Bennett), Hibernias 

 (Harvey), canalis Skagerrak ad Winga (Cleve), Galli;e (Thuret, 

 Hy, Bornet, Marissal), Hispani;e (Colmeiro, Danite fRosENviNGE, 

 Ostenfeld, Wesenberg-Lund, J. Schmidt) et pr. Bornholm (Rosen- 

 vinge) et passim in oceano Atlantico (Cleve), Germani;Te (Raben- 

 horst, Richter, Bulnheim, Auerswald, Kirchner, Klebahn, 

 Schroeder, Lemmermann, Schorler, Schmula. Lakowitz, Ludwig 

 etc), Bohemise (Hansgirg), Hungaric^e in horto zoologico Pe3ti(FoRTi) 

 et in lacu Balaton (Istvanffi), BosnicTe (Protic), Albani^e in lacu 

 «Scutari» dicto (Forti) Helveti;t^ in Lutzelsee (Waldvogel, For- 

 Ti), Austrise (Nave, Zukal), Italise ad Mutinam (Zanprognini) Bo- 



