Phycomycetse, Chytridiaceee, Physoderma. 447 



— Thallus non racemosus. Oosporse in quoque oogonio singulsB 

 plurinucleataB, oblongae. Oogonia terminalia, supeximposita seu ca- 

 tenulata. 

 1. Astreptonema iongisporum Hauptfl. 1. c. — Una fcantummodo i689 

 oospora in oogonio nata, quasi explente oogonium, oosporis pluri- 

 nucleatis, oblongis, 2-2,6 « 7-10; oogoniis terminalibus, semper sim- 

 plici serie invicem adnexis non transfusis ; sporangiis incognitis ; 

 antheridia desunt. 



Hah. in tegumento Grammari Locustae in G-ermania. 



CHRYSOPHtYCTIS Schilberszky, Ber. d. Deutsch. Bot. Ges. 1896, • 

 p. 36 (Etym. chrysos, aureus et pMyctis, bulla). — Sporangia amy- 

 celica, endobiotica, sphaerica (aureo-brunnea), in quaque cellula 

 matricis singula v. pauca, zoosporis referta, Sporae perdurantes 

 quoque adsunt leves, crassiuscule tunicatae. 



1. Chrysophlyctis endoblotica Schilb. 1. c. i69o 



Hah. in tuberibus Solani tuberosi putridis in Hungaria 

 super. 



PHYSOOERMA Wallr. — Syll. TII, p. 317, IX, p. 363, XI, p. 260. 



1. Physoderma IVIagnusianum Krieger, Hedw. 1896, p. (144). — Maculis 1691 

 Yg-l y, mm. diam., in petiolis oblongis, in foliis plerumque glo- 

 bosis, brunneis, callosis; sporangiis perd urantibus brunneis, giobosis 



V. oblongo-globosis, 30-34 [x. diam. 



i7a&. in foliis petiolisque Nasturtii amphibii pr. Konigstein 

 Saxoniae. 



2. Physoderma AcetosellaB E. Rostr. Bot. Tidsskr. 1897, p. 38. — 1692 

 Sporis perdurantibus sive globosis, 16-25 a. diam., sive ellipsoideis, 

 30-35 5* 23-26, membrana hyalina protoplasmate brunneo farctis, 

 intercellularibus, in eadem cellula 1-3, sporis raajoribus subinde 



1-2 appendiculis ovatis instructis. 



Hab. in ovariis Rumicis Acetosellae in Dania. 



3. Physoderma Calami Krieger, Hedw. 1896, .p, (144). — Maculis i693 

 brunneis, subrotundis v. oblongis, '/,^-1 '/^ mm. diam., in foHis vivis 

 non callosis, in foliis siceatis parum callosis; sporangiis perduran- 

 tibus in cellulis compluribus consociatis, bi^Tinneolis, giobosis v. 

 subglobopis, 15-22 p. diam. 



Hab. in foliis Acori Calami pr. Konigstein SaxoniEe. 



4. Physoderma Schroeteri Krieger, Hedw^ 1896, p. (144). — Foliicohim 1694 

 aut maculas subrotundas atras '/^-1 mm. diam. eJfficiens aut in series 



