55 



Apodya. 



28. Apodya lactea Cornu, Fish. IV ^™ Syn: Leptomitus lacteus 

 Agardh, Syll. VII ''^^ Saprolegnia Libertiae Kuntze, Syll. VII "»- 



Covers receptacles and drains of sugar-manufactories with a whitish fleece 

 (R 04 a 16). 



Pythium. 



29. Pythium cystosiphon (Roze 6. Cornu) Lindst., Syll. VII "\ 

 Fisch. IV -""^ 



Lemna trisulca. Jonstrup Vang (02 O. R.). 



30. Pythium de Baryanum Hesse, Syll. VII "", Fish. IV ">\ Kitn- 

 skimmel (R 86 f 6.93 c), Rodbrand (R04 b'"'^), Rodforraadnelse, Sorte 

 Ben (R 76 b'« 6. 88 n"^), Pythium-Rodbrand (M. L. M. 11 a), Lit: 

 F. K. R. 08, J. L. Jensen 94. 



Very common in May on seed-plants, but also to be found from 

 February to June. Causes much damage in hothouses and fields, found 

 on many different host-plants. 



H. Petersen also records (09 ''^) having found it on a dead cater- 

 pillar. 



Hordeum sativum, S. Lautrupgaard ('/e 84). Asparagus officinalis. Lang. Trane- 

 ksr (Rasmussen). B. R0nne (R 94 k 6. 02 a 1^°). Fagopyrum esculentum. S. Lyng- 

 by (M. L. M). Beta vulgaris. Common (R 04 b "O"). Brassica oleracea. J. Ribe 

 (Simonsen). Raphanus sativus. S. Brondbyvester. Anthyllis vulneraria. J. Skern 

 (M. L. M.). Pisum sativum. J. Vejle (J. Mortensen). Trifolium pratense. J. Marup 

 by Skern (M. L. M.). Medicago sativa. J. Varde (M. L. M. 07). Fuchsia sp. S. 

 Klampenborg. Solatium lycopersicum. S. Roskildevej (Koch). 



Peronosporineae. 



Berlese (1898) has given an excellent monograph of this group fur- 

 nished with splendid pictures. 



Cystopus. 



31. Cystopus lepigoni de By., Syll. VII "«, Fisch. IV '•^o, Syn: Al- 

 bugo lep. (de By.) Ktze (91). 



June— Sept., concerning its fecundation see Ruhland (1903). 



Lepigonum marinum. F. Fyenshoved; S. Flaskekroen; L. Radbyfjord (^^/t 78). 

 Lepigonum salinum. J. Hou!; F. Magaard; Thorseng; Thure; S. Frederikssund, 

 Charlottenlund; L. Lidsa (Exc. "/s 84), Radby {"^h 78). 



32. Cystopus hliti (Biv.) Lev. Syll. VII ''^', Fisch. IV". 

 Amarantus retroflexus. Am. Klevermarken ^"ji 84 (H. M.). 



