92 Myxophycefe, Ohroococcacese, Mlcrocystis. 



adluerente, irregiilariter pulvinato, siibdiffiiso, nigro a^riigineo; cel- 

 lulis densissinie adgregatis ; contentu paliide aM-ugineo. 



Hal). in stagnis ad Cladoplioram fractani Kuetz. epipliy- 

 tica Germania^ (Kuetzing) ; in lacu Hecksensee dicto Austrioe 

 (Grunow). 



20. Microcystis paiudosa (Rab.) nob., Anacystis paludosa Rabenb. 

 Fl. Eur. Alg. II, p. 52, Trichocystis gigantea Kuetz. Tab. Pbyc. I, 

 t. 26, f. II, Palmogloea gigantea Kuetz. in Bot. Zeit. 1847, p. 221. 

 — Strato niucoso amorpho, irregulari, sordide et pallide viridi, 

 subdiapbano; cellulis minimis numerosissimis in familias oblongas 

 ovatasque circ. 65 (i. latas, pallide a^ruginosas, tegumento durabili 

 obductas, consociatis. 



Hah. in locis paludosis silvarum, lapidiluis lignisque sa^pius 

 adha^rens, plerumque libere natans. — Obs. Ab icone cl. Kuetzingii 

 ha?c species ad animalculuni quoddam forsan est tribuenda Clathro- 

 cystide a^ruginosa pastum. 



21. IVIicrocystis pulverea (Wood) nob., Anacystis pulverea (Wood) 

 Wolle Freshw. Alg. U. S. p. 329, t. 210. f. 25, Anacystis glauca 

 Wolle in Wittr. et Nordst. exs. n. 796, Bull. Torr. Bot. Club. VI, 

 1877, n. 35, p. 182, Pleurococcus pulvereus Wood. Freshw. Alg. 

 U. S. p. 79. — Cellulis subglobosis, ovalibus vel angulosis, 2-3 }x. 

 crassis; contcntu pallide caunileo vel olivaceo-viridi; in familiis 

 consociatis magno in numero confertis et s?epe diffluenti hyalinoque 

 tegumento circumdatis. 



Hab. in saxis irroratis ad « Bethlehem Pa. » in Amer. bor. 

 fWooD, Wolle), in Austrin, Carinthia, Istria, Dalmatia (Hansgirg), 

 ad Luneburg in Borussia (M. Schmidt) et in montibus «Pieninen» 

 Hungaria^ (Filarsky). 



22. Microcystis fuscolutea (Hansg.j nob , Polycystis fuscolatea Hansg. 

 Prodr. II, p. 145-146, f. 55. — Cellulis globosis vel e mutua 

 pressione leviter angulosis, circa 3-4 [j.. crassis, singulis vel genii- 

 nato-confertis, aureis vel brunneo-luteis, raro pallide-luteolis, e 

 multis in familias 15-60 [x. latas, ovales vel globosas consociatis 

 sa^pe irregulariter vel racemose confertis, tegumento tenui, facile 

 diffluenti, luteo vel brunneo-Iuteo, gelatinoso circumdatis. 



Hah. rui)ibus, saxiscjue irroratis in Bohemia, Austria, Bosnia, 

 Istria, Dalmatia (Hansgirg), insulis F;eroensibus (Boergesen). 



