664 t^rotococcoideae, Palmellaceae, Oocystis. 



Eur. Algar. III, p. 53, Kirchn. Alg. Schles. p. 113, Hansg. Prodr. 

 D. 204. — Familiis 2-8-cellularibus ; cellulis rotundato-ovoideis 

 vel oblongis, aute divisiouem 33-40 ^ 15-21 ,• raembrana crassius- 

 cula, haud stratosa. 



Hab. in aquis stagnantibus, paludibus, lacubus etc, inter alias 

 Algas in Gerraania, Hungaria, Rossia et Bohemia; in Afghanistan 

 Asiae (Istvanffi). — Specimina asiatica hunc raemorata cellulas 

 18 s 9 prffihent et vix ad Oocysiin iVae^e/zV pertinent, — Forma 

 Nordstedtiana, OocysUs Nacgelii A. Br. Alg. unicell. p. 94 forma 

 in Nordst. Freshw. Alg. N. Zeal. and Austral. p. 21 : cellulis (binis 

 aut quaternis) ellipticis vel fere circulari-ellipticis 16-35 ^; 10-26 

 membrana in utroque fine tuberculo instructa (ut in omnibus spe- 

 ciebus hujus generis plus minus evidenter?). Ad « Arthur Pass » 

 et « Omatangi » Novae Zelandiae (S. Berggren sec. Nordstedt). 



2. Oocystis geminata Naeg. in Rabenh. Fl. Eur. Algar. III, p. 53 i5fii 

 et in litt. ad Al. Braun [1847], Oocysiis minor {micrococca) Itzig. 

 rascr. — Familiis e cellulis geminis formatis; cellulis ovoideis, 

 nonnunquam singulis intra cellulse matricalis membranam vesicu- 

 loso-ampliatam. 



Hah. in stagnis badensibus, prope Berolinum (A. Braun), ad 

 « Neudamm » Germanise (Itzigsoiin). 



3. Oocystis solitaria Wittr. in Wittr. et Nordst. Alg. aq. dulc. exs. i562 

 n. 244, f. 1-5 et Botaniska Notiser 1879 p. 24. — Cellulis ple- 

 rumque solitariis, 13-35 ^ 7-18, interdum in familias e 2-4 cellu- 



lis formatas consociatis, ellipsoideis, chlorophoris pulvinatis parie- 

 talibus; membrana subcrassa in utroque fine tuberculo instructa, 

 Hab. in aquis Suecise (Wittrock), in insula « Puertorico » 

 (Lagerheim), in Brasilia (Wille), ad « Gransmarket » in Sibiria 

 (R. Boldt). — Forma major Wille Ferskvandsalger fr. Novaja 

 Semlja p. 26: familiis 4-celIularibus, 60 ^ 50; cellulis 40 ::; 22. 

 Ad u Gaskap, MoUerbay, Matotchkin, Kostin Shar » Novfe Semliao 

 (Wille). — Var. rupestris (Kirchn.) Hansg. Prodr. p. 131, f. 81, 

 Wittr. et Nordst. Alg. aq. dulc. exs. n. 725, Oocystis rupesiris 

 Kirchn. Beitr. zur Algenfl. von Wiirttemberg, t. II et in Hedwi- 

 gia 1880 p. 144: cellulis oblongo-ellipticis, 13-27 s 6.-12, plerum- 

 que singulis; membrana communi mox rupta. In Germania (Kircii- 

 ner) et Bohemia (Hansgirg). 



4. Oocystis crassa Wittr. in Wittrock et Nordstedt Alg. aq. dulc. l^'f'>^ 

 exs. n. 355 ot in I)0tauiska Notiser 1880, p. 117. — Cellulis so- 

 litariis vel binis (raro terni;^) in familias consociatis, brevi-ellipsoi- 



