Myxophycese, Heterocystideae, Anabaena. 443 



cliuri » Caucasi (Sciimidle); passiin iii Fennia (Elfving, Levan- 

 der), Groenlandia (DoERaESEN), America boreali (Webber, Hailey, 

 WoLLE, Farlow, Gardner!) nec non in ditione Ncbraska (Bessey) 

 ct Minnesota (Tilden), in Fiiegia (Rorgej et India IJatavorani ad 

 « Passir-Wangi » (Massart), in lacii pr. .\polloniani Anatoliii' (Forti) 

 et passim in Australia (Moebius). — Var. Treleasei B. et Fl. Rev. 

 des Nost. IhH. IV, p. 230: nrticulis gracilibus, 4 [j,. crassis; hete- 

 rocystis 5 [J.. crassis, 10 [j.. longis; sporis leviter curvatis, 6 [j-. 

 diam., 40 \s,. longis, — In lacu «Mendota» ad « Madison » ditionis 

 «Wisconsin» Anier. bor. (Trelease). Huc pertinet forsan Ana- 

 bcena [Dolichospermuni) MendotcB Trelease, The Working of the 

 Madison Lakes in Wisconsin Acad. of Sc. Art. and Lettr. Vol. X, 

 1889, p. 122, t. X, f. 5: filamentis circinatis; articulis subtilibus, 

 plerumque elongatis et praesertim apicibus filamenti 3-4 >* 4,5-12 [x. ; 

 heterocystis distantibus, elongatis, plus minusve curvatis, 4,5-7,5 ^ 

 20-40 [1. ; contentu sporarum et articulorum aerugineo-viridi. — In 

 lacu «Mendota» prope « Madison» ditionis «Wisconsin» Aniericte 

 borealis, flores aquie extensos conficiens (Tuelease). — Var. gra- 

 Cilis Klebh. in Flora 1895, p. 268, t. 4, f. 23-24]: trichomatibus 

 irregulariter arcuato-spiralibus; spiris irregularibus, 30-60 |j.. diam., 

 in glomerulis facie et magnitudine irregulares, flocculosos conso- 

 ciatis; articulis globosis vel ellipsoideis, 4-5 «5-6; heterocystis 

 sphgericis 5 « 5-6 [J.. ; sporis sphseroideis, cylindricis, s^epe sensim 

 curvatis, 5-7 [j.. crassis, 12-25 [j.. longis prope vel procul ab he- 

 terocystis locatis, — In lacubus «Plun» Holsatiae limnetica (Kle- 

 BAHN, Lemmermann) ot iu turfosis Borussiie (Schmidle). 



9. Anabaena Lemmermanni Richt. in Lemm. Phytopl. Sachs. Teiche I02l 

 pag. 38 in Ploner Berichte t. VII et in Beitr. z. Kenntn. d. Plan- 

 ktonalgen XV, in Ploner Berichte X, p. 153, Anabcena FLos-aquce 

 Klebahn in Flora 1895, p. 27, tab. IV, fig. 21-22. — Strato sub- 

 sphjierico vel elongato, ad 150 [x. diam. ; trichomatibus e plurimis 

 inter se intricatis, radiatim dispositis, arcuatis; articulis subsph;iv 

 ricis vel ellipsoideis, rarius diametro brevioribus, latere externo con- 

 vexis, interno fere rectis, 5,5-7 [j.. crassis, 5-8 {j.. longis ; sporis cy- 

 lindricis, leviter lunato-curvatis, apicibus rotundatis, 8-11 [j.. diam,, 

 19-31 [j.. longis, e plurimis plerumque prope heterocystas sitis. 



Hab. in lacubus Saxonias et Holsatiae (Lemmermann), Zwische- 

 naliner Meer (Lemmermann) et in lacu Huro ins. Chathaiu oceani 

 Pacifici (Schauinsland). 



10. Anabaena circinalis Rab. Alg. exs. n. 209! (nec n. 1674, 2064), 1022 



