WITH NOTES ON OTHER SPECIES. 



137 



Zoosporangia from considerably swollen segments, renewed by sympodial branching. 

 Zoospores usually becoming grouped at the mouth of the sporangium, on escaping, 

 rarely swarming separately; soon leaving their cysts and swarming; finally encysting 

 again and germinating. Sexual organs known in'but one species. 



As Pringsheim has observed in one species ('83b), and Zopf in another ('88), that 

 the zoospores commonly escape after the manner of jicJilya, there seems to be as good 

 reason for the generic separation of the following species from LejHomitus, as for 

 keeping Saprolegnia and Ajchlya distinct, and also since there are marked diflPerences 

 in the branching of the hyphsB and in the formation of secondary sporangia. 



The species heretofore recognized are : 



JLpododachlya brachynema (Hildeb.) Pringsh. ('83b). 



Syn.: Lepfomitus bracJiynema Hildeb. ('67). 111.: Hildebrand, '67, PL XVI, Figs. 12-23. 



Has hyphse with short segments, and globular sporangia opening by short necks 

 and often occurring in series. No sexual organs are known. 



Apodaclilya pyrifera Zopf ('88). 



111.: Zopf, '88, PI. XXI, Figs. 1-21. 



Has hyphse with long segments, pyriform sporangia, developed singly and each 

 opening by a distinct papilla, and large globular chlamydospores. Sexual organs 

 have not been seen. 



To these species it seems necessary to add : 



ApODACHLYA (?) COMPLETA sp. UOV. 



111. : PI. XX, Figs. 119-121. 



Hyphse slender, with rather long segments. Zoosporangia unknown. Oogonia 

 terminal on branches of one or a few segments, each representing a swollen segment, 

 globular, with smooth, unpitted walls. Antheridia formed from lateral cylindrical 

 branches of one or two segments which arise from the slightly swollen apical part of 

 the segment next below the oogonium, usually two from each. Oospores oftenest five 

 to seven, sometimes less or more, thick- walled when mature, centric, 18 to 20,a in 

 diameter. 



