52 



Klebahn (97) has examined the same deformed anemones, but he 

 did not know Rostrups species and was unable to find any fungus. 



Anemone nemorosa. J. Skovgaard Krat in Vendsyssel (H. Loft), Loddentot 

 near Horsens (Gelert) ; F. Slipshavn (C. H. O.), Broholm, Vejstrup Aaskov 

 (1879) ; Lang. Longelse (Gelert) ; S. Lyngby Skov near Arresa, Charlottenlund 

 (A. Lge); B. Allinge, Almindingen (Exc. ''^/s 1911). Anemone ranunculoides. S. 

 Faergelunden, Ordrup Krat, Nssbyholm. 



16. Physoderma tenue (Nowak.) Karst., Syn: Cladochytrium tenue 

 Nowak., Syll. VII 2'^ Fisch. IV "^ 



On the petioles of Nymphaea. S. Ballemose C'la 02 H. Pet. 09 "O'). 



17. Physoderma comari (Berk. &. White) Lgh., Syn : Doassansia 

 comari (B. 6.. W.) de Toni, Syll. VII s"^. 



Is a very northern species recorded by Rpstrup from Iceland ("Physo- 

 derma vagans" R 03 b ='=), and by Lagerheim (98 ^'') and Vleugel (08 

 b ^^'') from the north of Norway and Sweden; it has also been found 

 a few times in Scotland (Stevenson 79 "^'^ and England (Plowright 89 ^''^). 



Cqmaram palustre. J. Kannestederne C^/t 03!). 



18. Physoderma myriophylli (Rostrup) Vgr. Micr. Rar., Syn: Cla- 

 dochytrium myriophylli Rostrup 1905 b ^°\ Lit: F. 6. W. 09 ^"^ c. icon., 

 H. Pet. 09'"'«. 



On stalks of Myriophyllum were found a number of thick, tuberous 

 tumours up to 1 cm. thick, proving to be filled with big, ellipsoidal 

 or — more seldom — spherical, sometimes rounded, polyedric 

 spores; they were furnished with a stratified, brownishsyellow wall 4p- 

 thick, and its size varied from 25 to 40 ^' in length and 20—25 K in 

 thickness. These spores were partly resting-spores partly sporangia, 

 some of them producing numerous spherical, colourless spores 6 1^ in 

 diameter. (R 05). 



Ferdinandsen and Winge who have later on examined this fungus 

 more thoroughly (F. &. W. 09 '"^ c. icon) have stated that the things 

 called spores by Rostrup are uniform drops of oil. The resting spores 

 remain unchanged the whole winter and are germinating during 

 March— May. The zoospores are 6—8 M in diameter and are pressed 

 forth through the coUum. (See fig. tab. I.) 



Myriophyllum verticillatum, S. Carl S0 near Frederiksborg (E. W.), 01stykke 

 Mose (O. R. Exs. Vgr. no 906), Graft ved Bure Se (O. R. "/9 02 and again 

 03), Ryget Mose (Exc. ^o/s 06), Holte (Nic. Hartz), St. Jargen S0 (abundantly 

 O. R.). 



19. Physoderma hippuridis Rostrup (92 a ^^i), Syll. XI '^^^ Syn: 

 Cladochytrium hippuridis de Wildem., Syll. XIV ""^ 



Maculae pustulatae, fuscae, 0,5—1 mm diam. Sporae parenchymati 



