CEDOGONIACEJE. 171 



globose, rufous-brown when mature, loosely involved in the 

 oogonium. 



SIZE. Cells -02-'025 mm. 1^-3 times as long; oogonia 

 05 X -04 mm. ; oospore -03-'032 nim. 



Kutz. Tab. iii., t. 39, f. 6. Rabh. Alg. Eur. iii., 353. 



Deeside (Scotland). 

 Plate LXVI. fig. 3. CEdogonium capillaceum, with oogonia x 400. 



(Edogonium Hutchinsiae. Wittr. Mon. CEdog. p. 42. 



Oogonia single, rather depressedly to somewhat egg-shaped 

 globose, opening by a pore above the middle ; oospores filling 

 the oogonium, epispore punctate with little warts ; supporting 

 cells swollen. 



SIZE. Cells '03-'035 mm., 4-6 times as long; oogonia 

 062--075 x -065--095 mm. ; oospores -06--073 x '055- -072 

 mm. ; supporting cells 04-'05 mrn. 2-4 times as long. 



Ireland. 



The figure is taken from original specimens from Miss Hiitchins in the 

 Royal Herbarium at Kew. 



Plate LXV. fig. 1. (Edogonium Hut chin sice, with oogonia x 400. 

 CEdogonium princeps. (Hass). Wittr. Mon. (Edog. p. 42. 



Oogonia single, somewhat egg-shaped globose, opening with 

 a pore above the middle ; oospores globose, not distinctly filling 

 the oogonium. 



SIZE. Cells '037--045 mm. 1J-2J times as long ; oogonia 

 061--075 x -068--08 mm. ; oospore -058--066 X -06--065 

 mm. 



Vesiculifera princeps Hass. F. W. Alg. 195. 



Vesiculifera capillaris Hass. F. W. Alg. 195, t. 50, f. 1-2. 



England. 



Plate LXV.fig. 2. (Edogonium princeps, with oogonia and (a) spermo- 

 gonia (?) x 400. 



b. Oospores subelliptic or oval. 

 (Edogonium longatum. Kutz. Sp. Alg. p. 364. 



Oogonia single (often solitary, terminal), rarely 2-3 con- 

 tinuous, ellipsoid, opening by an operculum, with a narrow 

 fissure ; oospores globosely-ellipsoid, scarcely filling the 

 oogonium ; terminal cell obtuse. 



SIZE. Cells '005--006 mm. 2-3 times as long; oogonia 

 016--017 x '021--024 mm. ; oospores -015--016 x -0175--0185 

 mm. 



2 B 



