21 

 A NEW OEDOGONIUM FEOM CALIFORNIA. 



By Kabd E. Hirst, Magister Phil. 



Oedogonium geniculatum Hirn, nov. spec. Oe. monoicum, 

 oogoniis singulis paullum tumidis, oboviformibus vel obovi- 

 formi — globosis, poro superiore apertis ; oosporis oogonia 

 non complentibus, globosis vel subdepresso-globosis (et 

 dum in sectione optica verticali plerumque subquadrangu- 

 latis); membrana oosporarurn lsevi, subcrassa ; antheridiis 

 1-5-cellularibus, subepigynis, subhypogynis vel sparsis, non 

 vero cum cellulis vegetativis alternantibus ( ? spermatozoidis 

 binis, divisione horizontali ortis) : 



crassit. cell, veget. 37-48//, altit. l|-2£ (-3)-plo major 



oogon. 56-63 /*, " 56-67 (-70) /x- 



oospor. 48-59 /*, " 48-59 }x. 



cell. anth. 37-44 fx, " 5-9 yu. 



Hab. in America boreali ; Berkeley, California. Legit, cl. 

 Professor W. A. Setchell. Species hsec ex. Oedogonio capil- 

 liformi jS australi Wittr. (Wittrock et Nordstedt, Alg. exs., 

 Fasc. 15, Nr. 704) valde monet, est autem robustior et 

 monoica. 



Jyraskyla, Finland, 27 January, 1898. 



KEY TO THE SPECIES OF PLECTEITIS AND 



ALIGERA. 



By WlLHELM N. SUKSDORF. 



In a paper published in the Deutsche Botanische Monats- 

 schrift (nos. 4 and 5, 1897), I ventured to separate the Pacific 

 Coast Valerianellas (Plectritis DC.) from the other members 

 of the Valerianaceae, being convinced that they should con- 

 stitute a group or tribe by themselves. This tribe, called 

 Plectritideae, was divided into two genera. Having occasion 



Erythea, Vol. VI., No. 3 [17 March, 1898.] 



