79 Karz E. Hırn. 
Genus I. OEDOGONIUM. Lixx. 
1820 Link p. 5; 1858 Pringsheim (III) p. 68; 1874 Wittrock (IV) p. 6. 
Thallus aquaticus, e filis simplicibus constans; cellule vegetativæ cylindra- 
cez, parietibus longitudinalibus rectis, raro undulato-constrictis; cellula basalis 
basi lobata, sæpe statumini affixa; cellula terminalis apice obtusa vel apiculata 
vel in setam longam producta; plante divisione cellularum omnium vegetativa- 
rum crescentes; in prima Zoosporæ germinantis partitione ruptio membranæ 
annuliformis in parte fit cellulæ latiore, ciliis carenti; oogonia divisione cellulae 
vegetativæ simplici oriuntur. 
A. Monoica vel dioica, macrandria (p. 48). 
a. Porifera (p. 49). 
a. Globospora (p. #9). 
1. Qe. cryptoporum Wirrn. 
1870 Wittrock (I) p. 119; 1874 Wittrock (IV) p. 7; 1877 Nordstedt (I) 
p. 23; 1878 Kirchner (I) p. 52; 1889 De Toni (I) p. 33. 
Oe. monoicum, oogoniis singulis, subdepresse oboviformi-globosis vel sub- 
depresso-globosis, poro mediano apertis; oosporis subdepresso-globosis, oogonia 
fere complentibus, membrana levi; antheridiis 1—7-cellularibus, sparsis vel 
non raro subhypo- vel subepigynis; spermatozoidis singulis ; 
crassit. cell. veget. —— 7—10 u, altit. 4—6-plo major; 
2 00gon. 23—28 ,, „ 26—31 u; 
= 00Spor. 29—97 ,, ,(18—)19—21 ,; 
» cell. antherid. 6—8  ,. , JILL e 
ab ie el: 
Hab. in 
Dania (sec. Wittrock). (?) Norvegia (sec. Wittrock. An forma typica?). 
Suecia: Bah. in lacu Feringe sjö ad Yttene, in Gluppó ad Fjällbacka, Koón ad 
oppidum Marstrand, Bredmossen par. Romelanda (sec. Nordstedt); Dal. ad Hällan 
par. Gunnarsnüs (Herb. Wittrock). 
T. XXVI. 
