130 Karl E. Hirn. 



oosporae subcrenatis vel fere integris, oogoniis singulis vel 2 — 4-continuis, cel- 

 lulis vegetativis gracilibus; 



crassit. cell, veget. 11 — 16 ft, altit. 4 — 10-pIo major: 

 oogon. 30—36 „, „ 42—81 «; 



„ oospor. 27 — 34 .,, „ 40 — 65 ,,. 



Tab. XV, Fig. 85. 

 Hab. in 



America bor.: Suntaug Lake, Lynnefield, Massachusetts (Herb. Collins); ad 

 oppidum Bridgeport civit. Connecticut. 



ß longiarticulatum Hansg. 



1888 Hansgirg (II) p. 46; 1889 De Toni (I) p. 68; Oe. calosporum Hirn (I) 

 1895 p. 20, t. 1, f. 3 (vide infra). 



Var. celhüis vegetativis gracilibus, oogoniis suboblonge oboviformibus, sin- 

 gulis, oosporis oboviformibus vel fere ellipsoideis, oogonia non plane complenti- 

 bus, costis longitudinalibus membrante oosporae distincte (pauci-)crenatis ; 



1 ) 



crassit. cell, veget. 12 — 15 << , altit. 5 — 6-plo major; 

 „ oogon. 27—30 „, „ 57—60 f i ; 



oospor. 24—27 „, „ -48 „. 



Hab. in 



Austria: in stagnis ad Wittingau Bohemise (sec. Hansgirg). 



Forma in Hirn (I) t. 1, f. 3 delineata magnitudine est sequenti: 



crassit. cell, veget. 8 — 15 « , altit. 4V 2 — 10V 2 -plo major; 

 ,, oogon. 31 — 35 „, „ 58 — 70 ii ; 



,, oospor. 30 — 33 ,,, ,, 48 — 54 ,,. 



Tab. XV, Fig. 86. 



Hab. in 



Fennia: Tb. in rivulo Jokela ä haud procul ab oppido Jyväskylä (Herb. M. Fenn.). 



y aureum J. E. Tilden. 



Exs. 1896 in Tilden, Ain.r. Alg. Gent. II, N:ris 123 et 186. 

 1898 Tilden p. 90, t, 8, f. 1—3. 



T. XXVU. 



