112 THE SAPROLEGNIACE^ OF THE UNITED STATES, 



much more robust than that and sufficiently distinct otherwise, aside from the differ- 

 ences in the sporangia. 



Species nsTQUiREND^. 



Saprolegnia androgyna Archer ('67.) See Notes on Aplanes. 



Saprolegnia xylopMla Kiitz. ('43). As various members of this family grow 

 readily on decaying wood in water, it is probable that this name refers to some of 

 them. As it antedates the discovery of the sexual organs, Kiitzing's figure shows 

 only the zo6s]3oric stage, and the name cannot be referred to the synonymy of any 

 particular species. 



Saprolegnia corcagiensis Hartog ('87) is said to have the constrictions and 

 zoosporangia of Leptomitus lacteus, and oogonia with pitted walls ("fenestratis "). 

 It has been recognized only by Hartog and needs to be more completely charac- 

 terized and fui"ther investigated. 



Saprolegnia quisquiliarum Roumeg. ('91) has not to my knowledge been fully 

 described, but is based on specimens issued as 'No. 5932 of the " Fungi Gallici." 

 An examination of one of the specimens issued, made partly by my friend, Mr. A. 

 B. Seymour, and partly b}'^ myself through his kindness, failed to discover anything 

 Saprolegni aceou s . 



Species excludend^. 



Saprolegnia minor Kiitz. ('43) is probably an Smpusa. , 



Saprolegnia DeBaryi Walz ('70) is probably a species of PytMum. 



Saprolegnia siliquceformis Reinsch ('78) is Monohlepharis prolifera Comu, 

 according to Cornu ('77). 



Saprolegnia Schachtii Frank ('81) is probably also a PytMum. 



Saprolegnia Lihertite (Bory) Ktz. ('49) and three other names published by 

 Kiitzing at the same time, viz., S. Candida., S. tenuis and S. saccata, are followed by 

 descriptions so imperfect as to have no individuality and no value. 



Saprolegnia mucophaga Smith (Gard. Chron., XX, 781 ; 1883) and 



Saprolegnia philomukes Smith (Gard. Chrou., XXII, 245; 1884) do not belong 

 to this family. They may be forms of PytMum. 



