Myxophycefe, Riviilariacese, Calothrix. 625 



Badensis et in lacu Tegel prope Beroliimiii (Braun) et Lnneburg 

 (M. Schmidt), ad caules plantaruin Dani^e (Rosenvinge, Nordstedt), 

 in testis Anodontse in Suecla ad Klagerup (Simmons) et in saxis 

 submersis in « Massachussetts » et « Connecticut » (Holden, Set- 

 chell) et prope Washington (Wolle, Tilden). 



35. Calothrix Weberi Scbmidle Ein. Alg. aus Preuss. Hochmoor., in 1417 

 Hedwigia 1899, p. 173. — Fihimentis libere natantibus vel substrato 

 adhserentibus, non ramosis, iiiitio pauhxtim attenuatis, deinde rapide 



in pilum 2-2,5 \).. crassum attenuatis, raro rectis, plerumque ir- 

 reguhiriter, siepe etiam spiraliter attenuatis, ad 8 [j. diam.; tricho- 

 matibus 5,1 [j.. crassis, cellulis diam. paulo longioribus, cylindricis, 

 contentu a^rugineo-virescenti granuloso ; tegumentis diffluentibus, 

 aegre conspicuis, hyalinis, subtilibus, arctis, apice aoertis non cam- 

 panulatis. 



Hab. ad « Ahlenmohr» Borussiie, in Sphagnis epiphytica vel li- 

 bere natans (Weber, Schmidle). 



36. Calotlirix Kuntzei P. Richt. in Kuntze Rev. aen. Plant. KI (1898) 1418 

 p. 388, c. ic. — Strato siccitate crustaceo, pulvinato, mamilloso, 

 lapidescenti, explanato, subtus et intus decolorato, superficie cerugi- 

 noso, laminoso, ad 5 mm. crasso; filis liberis, plerumque in fasci- 

 culos irregulares conglutinatis, parallelis vel flexilibus, 10-11 [j.. 

 crassis; vagina arcta, crassa, hyalina et lutea, lainellosa, pluries 

 ocreata; trichoinatibus pluries, passim indistincte, articulatis, ad ba- 



sim priesertim initio incrassatis, pulchre cyaneis ; articulis basila- 

 ribus liemisphsericis, sphfericis, doliiformibus vel discoideis, sur- 

 sum ovalibus, globosis vel semiglobosis, diam. subgequalibus vel 

 brevioribus vel longioribus; heterocystis basilaribus spkericis et 

 intercalaribus quadratis vel cylindricis, interdum seriatis, diam. 

 sequalibus vel usque 7-plo longioribus. 



Hab. in fontibus « Geyser » dictis in Yellowstone Park Amer. 

 bor. (Kuntze). 



37. Calothrix thermalis (Schwabe) Hansgirg Beitr. zur Kenntn. der 1419 

 bohmisch. Thennalalgenfl. in CEster. Bot. Zeitschrift XXXIV, 1884, 



p. 279, Prodr. II, p. 50, Born. et Flah. Rev. I, pag. 368, Schmula 

 in H. et R. Phyc. Univ. n. 742! Lagerh. in W. N. et Lagerh. 

 Alg. exs. n. 1306! Mastichonema thermale Schwabe in Linmea 

 1837, p. 112, Kiitz. Sp. Alg. p. 326, Tab. Phyc. II, p. 13, t. 46, 

 f. I, Cohn in Abhandl. der schles. Gesellsch. fiir vaterland. Cultur 

 Heft 1862, pag. 39, Rabenhorst FI. Eur. Alg. II, p. 228, Brttgg. 

 Bundn. Alg. p. 265. — Strato iiiucoso, levi, saturate olivaceo- 



