288 Myxophyceae, Lyngbyeae, Lyngbya. 



diam. trichomatis brevioribus aut longioribus, 1,2-3 [x. longis; dis- 

 sepimentis granulis binis refringentioribus notatis. 



Hab. in stagnis Brasiliaj ad folia Chane Hornemauni inter alias 

 algas (ScHENKj; in lacubus HolsatisB (Lemmermann) ; prope Mosco- 

 wiam Rossite (Iwanow); in Anglia (West), in ditione « Gonnecticut» 

 Amer. bor. (Setchell), in Nova Anglia (Collins) et ins. Whidbey 

 (Gardner). 



57. Lyngbya bipunctata Lemmerm. Phytoplanct. Siichs. Teiche in 

 Plon. Forschungsber. VH, 1899, p. 38, t. II, f. 48. — Fihimentis 

 leviter spiralibus, 1,5 [j.. diam.; cellulis 1-1,5 [j.. diam., 3,5-5,5 [i. 

 longis, ad dissepimenta granulis duobus refringentioribus uotatis. 



Hah. m lacubus Saxoniie, Suecite (Lemmermann), Daniae (We- 

 sENBERG-LuND). — Differt a L. contorta Lemm. et a L. Lagerhei- 

 mii (Moeb.) Gom. trichomatibus late spiralibus, cellulis elongatis et 

 binis granulis refringentioribus juxta dissepimenta semper prsesen- 

 tibus. 



58. Lyngbya contorta Lemmerm. in Ploner Forschungsber. VI (1898), 

 p. 202 et X (1903), p. 153, Ber. d. Deutsch. Bot. Ges. p. 91 (1898), 

 Johs. Schmidt Cyan. Dan. p. 63 (343). — Filamentis singulis libere 

 natantibus, regulariter denseque in spiram revolutis; vaginis 1,5-2 [i. 

 latis, arctis, achrois, chlorozincico jodurato non caerulescentibus 

 circumfusis; articulis 1-1,5 [x. latis, 3-5 {x. longis, contentu pallide 

 gerugineo-viridi confertis, ad dissepimenta plerumque granulo re- 

 fringentiori notatis, vacuolis aerogenis carentibus. 



Hab. in aqua subsalsa libere natans in paludibus et lacunis 

 Holsatise et Suecice (Lemmermann), necnon in lacubus Marib (Osten- 

 feld) et Fureso (J. Schmidt), necnon passim in Dania (Wesen- 

 berg-Lund); in lacu «Apollonia» Anatoliae (Brunnthaler). 



59. Lyngbya holsatica Lemm. in Ploner Forschungsber. XI, p. 306, 

 cum ic. — Filamentis sparsis, laxe et regulariter spiralibus; vagina 

 hyalina, tenui; articulis circ. 3 [i. latis, 1,5 [j.. longis; cellula apicali 

 rotundata; contentu homogeneo, serugineo; vaginis evidentibus. 



Hah. in lacu « Oberer Ausgrabensee » Holsatise (Lemmermann). 

 — Differt a L. Lagerheimii brevitate cellularum et a L. bipunctata 

 absentia granulorum lucem refringentium. 



