PLATE 3 

 SAPROLEGNIACEAE— ANCYLISTACEAE 



1. Saprolegnia ferax (Fr.) Nees 



(Schroet. Nat. Pfl. p. 97, after Thuret) 



a. Fly with mycelium xl 



b. Oogonia and antheridia x400, after DeBary 



c. Zoosporangium and zoospores x200 



2. Pythiopsis cymosa DeBary 



(Id. p. 97, after DeBary) 



a. Zoosporangia xl60 



b. Oogone with antheridia x750 



3. Dictyuchus monosporus Leitg. 



(Id. p. 99, after Leitgeb) 



a. Zoosporangia xl80 



b. Zoospore x400 



c. Mature oospore x400 



4. Aphanomyces stellatus DeBary 



(Id. p. 100, after DeBary) 



a. Oogones with antheridia 



b. Cluster of zoosporangia 



c. Zoospores 



5. Leptolegnia caudata DeBary 



(Id. p. 100, after DeBary) 



a. Hyphae bearing oogones xl60 



b. Oospore x500 



6. Aplanes brauni DeBary 



(Id. p. 101, after DeBary) 



a. Oogones x30 



b. Sporangia and germinating spores x30 



7. Leptomitus lacteus Ag. 



(Id. p. 102, after Prinpsheim) 



a. Mature zoosporangia x300 



b. Zoospores x430 



8. Rhipidium interruptum Cornu 



(Id. p. 103, after Cornu) 



a. Whole plant 



b. Disk filament with zoosporangmm and 



oosporangium x500 



9. Apodachyla pirifera (Zopf) Pring. 



(Id. p. 102, after Zopf) 



a. Terminal conidium x500 



b. Zoosporangia x250 



10. Pythium debaryanum Hesse 



(Id. p. 105, after Hesse) 



a. Oogones and antherids x375, after DeBary 



b. Mycelium with young zoosporangia x200 



c. Zoospores x300 (typically 2-ciliate) 



11. Myzocytium proliferum Schenck 



(Id. p. 90, after Zopf) 



a. Chain of sporangia x250 



b. Oospores and emptied antheridia, x250 



12. Lagenidium rabenhorsti Zopf 



(Id. p. 90, after Zopf) 



a. Oospores x720 



b. One-celled plant forming zoospores x720 



13. Ancylistes closteri Pfitz. 



(Id. p. 92, after Pfitzer) 



a. Closterium with several hyphae x.SOO 



b. Oospores x500 



