46 Confervoideai, (Edogoniaceae, CEdogonium. 



Species dioicae, naunandrcB. 

 .1. Spccies nannandribus uuicellularibus doiiat;e. 

 1. Oogonia processibus vorticillatis in raedio instructa. 



42. (Etlogonium platygynum Wittr. ffiJog. nov. p. 1, Prodr. Moaogr. loo 

 CEdog. p. 17, n. 34, t. 1, f. 5-9, Hansgirg Prodr. p. 221, Kirchn. 

 Alg. Schles. p. 53, Wolle Freshw. Alg. U. S. p. 75, t. 77, f. 1-4, 

 Cooke Brit. Freshw. Alg. p. 158, t. 50, f. 5. — Gynandrosporuin 

 vel idioandrosporum ; oogoiiiis singulis (rarissime binis), depresso- 

 oboviformibus, processibus medianis 7-12, rotundatis; oog. infra 

 medium circumscissis, poro in circumscissione sito apertis, a ver- 

 tice visis orbicularibus, raargine sinuato, sinubus 7-12 (plerumque 

 8); oosporis subdepresso-globosis, oogonia fere complentibus; an- 

 drosporangiis 1-o-cellularibus; cellula terminali obtusa; nannan- 

 dribus oboviformibus, minimis, in oogoniis sedentibus; crassit. celi. 

 veget. 6-10 a. altit. 2-5-plo majore; oogoii. 21-30 t; lG-24; oospor. 

 17-24 i5 15-20; coll. androsporang. 6-8^7-8; nannandr. 4,5-5 ^; 

 8,5-9,5. 



llab. in Suecia, Norvegia, Germania, Hibernia, Bohemia, Ame- 

 rica boreali. — Var. continuum Nordst. in Botaniska Notiser 1887, 

 p. 153 et in Notarisia 1888, p. 458, Freshw. Alg. N. Zeal. p. 12, 

 t. 1, f. 16-17: oogoniis compluribus (5), continuis; ceilulis (3) suf- 

 fultoriis crassioribus; crass. cell. veget. 8 ,a. altit. 0-pIo majore; 

 crass. cell. suffult. 12-14::; 3; oogon. 32::; 20; oospor. 22-20; cell. 

 androsp. (?) 17 =; 12. Ad u Ohaearvai» in Nova Zelandia (Berggren). 



43. CEdogonium oelandicum Wittr. Prodr. Monogr. CEdog. p. 17, n. 35. loi 

 — Gynandrosporum; oogoniis singulis vel binis, depresso-globosis, 

 poro superiore apertis, a vertice visis orbicularibus, niargine le- 

 vissime undulato; oosporis depresso-globosis, oogonia fere com- 

 plentibus; androsporangiis 2-6-ceIluIaribus, subepigynis (interdum 

 terminalibus); cellulis vegetativis trivialibus capitellatis; cellula 

 terminali obtusa; nannandribus oboviforraibus, in oogoniis soden- 

 tibus; crassit. cell. vegct. 10-15 y.. altit. 2'/2-9-pIo majore; cell. 

 androsp. 7-10^12-18; oogon. 36-44^27-32; oospor. 33-40:^26- 

 30; nannandr. 7 i; 12. 



llab. in Suecia. 



44. CEdogonium bahuslense Nordst. Bohiisl. ffidog. pag. 26, tab. 111, lo^ 

 fig. 7-11. — Nannandrum, gynandrosporum ; oogoniis singulis, 

 rarissime binis, depresso-oboviformibus, in medio processibus 

 rotundatis, verticillatis instructis, inlVa niedium circurascissis, poro 



