Confervoidea', Cyliiidrocapsaceas, Cylindrocapsa. 93 



Cylindrocapsa nudla Reinsch Algenfl. von Mittel-Fraak. p. G7, t. 6, 250 

 f. 2, Cooke Brit. Freshw. Alg. p. 23. — Cellulis vegetativis el- 

 lipticis, 23-30 a. crassis, membrana crassiore sine tegumentis ; fi- 

 lamentorum apicibus inflatulis cellulisque 4 impletis. 



Hab. in aquis fluentibiis pr. aErlangen» et ad fl. a Schwobach » 

 in Bavaria (Reinsch), in Belgio (De-Wildeman) et in Hibernia (Cooke). 

 — «Videtur Cylindrocapscv znvolulcu forma». 

 Cylindrocapsa geminella Wolle Freshw. Alg. of the U. S. p. 104, 251 

 t. 91, f. 1-17, Hansg. Physiol. und Algol. Studien tab. 4, Prodr. 

 p. 224, Hormospora gemimlla Wolle in Bull. Torr. Bot. Cl. 1877 

 p. 137. — Filamentis in flocculos dilute vel flavescenti-virides, li- 

 bere natantes vel epiphyticos congestis, rarius solitariis, constrictio- 

 nibus transversis subtorulosis; cellulis vegetativis 20-24 ^. crassis, 

 membrana crassa, distincte lamellosa donatis; oosporis globosis, 

 23-25 a. diam., maturis tunica hjalina, circ. 50 ]x. lata involutis. 



Hah. in stagnis, plerumque ad algas fllamentosas, in America 

 boreali et Bohemia. — Var. minor Hansgirg I. c. p. 224, f. 122: 

 cellulis vegetativis cylindraceis, subglobosis vel e mutua pressione 

 subquadrangularibus, plerumque 12-15 ij.. (rarius 18-25 vel in fi- 

 lamentis juvenilibus tantum 9-12) crassis, 1-2-plo longioribus; 

 divisione peracta paullo brevioribus, initio tenui-tunicatis, setate 

 provecta membrana distincte stratosa, crassa, hyalina contentuque 

 flavescenti, raro laete chlorophylloso-viridi granulisque amylaceis 

 prseditis; oogoniis solitariis, raro 2-4-aggregutis, plerumque glo- 

 bosis vel compresso-globosis, rarius ellipticis, membrana 3-4-stra- 

 tosa, hyalina donatis, 24-40 y.. cr. ; oosphseris globosis, oogonia 

 haud ex toto compleatibus, 18-24 \x. diam., primo laete viridibus, 

 demum flavescenti-viridibus , rufescentibus vel aurantiaco-rufis ; 

 oosporis contentu rufescenti-flavo, raro rufo-brunneolo, oleoso, ni- 

 tente membranaque hyalina, levi instructis; antherozoidiis fusoi- 

 deis, flavo-viridulis, 9-10^:2,5. In stagnis pluribusque locis Bohe- 

 mia\ socio ssepe Nosiocopside lohalo. 



Cylindrocapsa amoena Wolle Freshw. Alg. U. S. p. 105, t. 91, 252 

 f. 18-23. — Filamentis elongatis, ad genicula non contractis, tena- 

 cibus, adparenter nitido-margaritaceis, praecipue ad cellularum 

 apices ; contentu Isete viridi, contractione in singula cellula ma- 

 crosporam (aplanosporam?) raro in duas massas partitam efflciente; 

 cellulis vegetativis septis veris haud efi^ormatis, ante divisionem dia- 

 metro 2-3-plo longioribus. 



Hah. in stagnis in America boreali. — Diani. filam. 7-12 u.. 



