1010 AQUATIC PHYCOMYCETES 



parthenogenetic (?) female gametangia expanded; resting spore spher- 

 ical, about 14 [x in diameter, with a roughened wall. 

 In Oedogonium, Belgium. 



? Lagenidium sp. Deckenbach 

 Flora, 92:253. 1903 



(The fungus is merely mentioned by Deckenbach, no description 

 being given.) 



In Chaetomorpha aerea, Russia (Balaclava, Black Sea). 



The binomial Lagenidium chaetomorphae Jacz. has been given the 

 plant by Jaczewski (1931 : 67). 



? Lagenidium sp. Scherffel 

 Arch. Protistenk., 52: 23, pi. 2, fig. 86. 1925 



Thallus tubular, somewhat irregular, with short lateral saccate out- 

 growths, infection tube persistent; sporangia several, delimited by 

 narrow cross walls, discharge tube cylindrical, forming a thick-walled 

 hourglass-like forcing apparatus which pushes apart the valves of the 

 host, not extended appreciably extramatrically ; zoospores not observed, 

 possibly formed as in Pythium; plants dioecious (?), female gametangium 

 irregularly expanded; resting spore spherical, not filling the gametan- 

 gium; male gametangium like the sporangium, with a lateral outgrowth. 



In Pinnularia sp., Hungary. 



? Lagenidium sp. Ookubo 



Nagaoa, 2: 125, fig. 79. 1952 



On Aegagropila sp., Japan. 



"This seems near Lagenidium rabenhorstii, L. marchalianwn and L. 

 closterii, differing, however, in respect of host-relationship and several 

 morphological characteristics" (Ookubo, op. cit.). 



IMPERFECTLY KNOWN GENUS OF THE LAGENIDIALES 



? LAGENIDIOPSIS de Wildeman 

 Ann. Soc. Beige Micro. (Mem.), 20: 1 15. 1896 



Thallus endobiotic, tubular, with occasional short branches, holocar- 



