42 



Veit Brecher Wittrock, 



crassit. cell, veget. 25 — 27 ^, altit. 3 — 4plo major; 



oogon. 45 — 47 „ „ 53 — 60 /*; 



„ oospor. 43 — 45 „ „ 47 — 49 ; 



„ membr. oospor. 4 — 4% „ . 

 Hab. in Suecia, Dania. 



102. Oe. Hutchinsiae Wittr. mscr. 



Oe. oogoniis singulis, subdepresso- ad suboviformi-globosis , poro 

 superiore apertis; oosporis oogonia complentibus, episporio punctato-verru- 

 culoso; cellulis suffultoriis tumidis; 



crassit. cell, veget. 30 — 35 altit. 4 — Gplo major; 

 „ oogon. 62 — 75 „ „ 65 — 95 /u; 



,, oospor. 60 — 73 ., „ 55 — 72 ,, ; 



cell, suffult. 40—50 ,, ., 2 — 4plo major. 

 Hab. in Hibernia, 



103. Oe. princeps (Hass.) Wittr. 



Vesimlifera princeps Hass. Obs. on. Freshw. Conf. p. 388, ex p. '). V. ca- 

 pillars Hass. Hist, o Brit. Freshw. Alg. p. 195, t. 50, f. 1 et 2. Oe. spec. Welw. 

 Pbycot. Lusit. mo 109. 



Oe. oogoniis singulis, suboboviformi-globosis, poro superiore apertis; 

 oosporis globosis, oogonia non plane complentibus; 



crassit. cell, veget. 37 — 45 altit. I 1 /, — 2 J / 4 plo major; 



„ oogon. 61 — 75 „ „ 68 — 80 ju.\ 



,, oospor. 58 — 66 „ „ 60 — 65 ,, . 

 Hab. in Britannia, Lusitania. 



104. Oe. giganteum Kiitz. 



Phyc. Germ. p. 200; Tab. Pbyc. Ill, t. 37, f. 2. ? Vesimlifera lacustris Hass. 

 Hist, of Brit. Freshw. Alg. p. 198, t. 52, f. 1. 



Oe. oogoniis singulis, paullum tumidis, cylindrico-obo\iformibus, poro 

 superiore apertis; oosporis cylindrico-ellipsoideis, oogonia fere complentibus 

 (interdum lageniformibus, brevicollibus et tunc oogonia plane explentibus); 

 episporio subtiliter scrobiculato; cellulis sutfultoriis subtumidis; 



crassit. cell, veget. 30—42 ^, altit. 2 — 4y 2 plo major; 



„ suffult. 54—60 „ „ lVa— 13 A » n J 



') Vidimus specimiua originalia Hassalliana e herbario cel. Professoris 

 J..E. Areschoug. 



