Description of Plates. 323 



Plate VIII. 



Fig. I. — Tubcrcinia tricntalis conidiophores growing outwards l)etween the 

 epidermal cells and producing conidia. x 320. Woronin. 



Fi^. 2. — Two conidia of the same germinating. X 320. Woronin. 



Fig. 3. — Conidium of the same forcing its germ-tube between two epidermal 

 cellsof the host-plant. X 520. Woronin. 



Fig. 4. — Doassansia alisiiiatis. Section of a leaf of Alisnia plantago, show- 

 ing a receptacle of /). alismatis. X 20. After Cornu. 



Fig. 5. — Teleutospore of the same germinating, showing the septum in the 

 promycelium, and apical cluster of promycelial spores. X 500. Cornu. 



Fig. 6. — Graphiola pha-iiicis. Three spores germinating, a has just emitted 

 its germ-tube ; in b and c the germ-tubes have become promycelia, and arc each 

 ]iroducing a single promycelial spore. X 600. Fischer. 



Fig. 7. — Promycelial spore of the above which has from one end emitted a 

 germ-tube, and has become septate and empty. X 600. Fischer. 



Fig. 8. — Spore of the same which has produced a well-developed germ- 

 tube. X 600. Fischer. 



Fig. 9. — Tjibercidina persicina. Ripe spore just beginning to germinate in a 

 weak saccharine solution. x 420. Gobi. 



Fig. 10. — The same further advanced, and developing a promycelial spore 

 at its distal extremity. X 420. Gobi. 



Y\a. II. — Apex of promycelium just before the promycelial spore is 

 abstricted. X 420. Gobi. 



Fig. 12. — The extremity of a branched mycelial hypha producing spores 

 from the surface of ripe sclerotium. X 420. Gobi. 



Fig. 13. — Three promycelial spores of various sizes. X 420. Gobi. 



Fig. 14. — Protomyces macrosponis. Mycelial hypha with intercalated spore. 

 X 700. De Bary. 



Fig. It;-i8. — The same in, various stages of maturity and germination. 

 X 200. De Bary. 



Fig. 19. — The escaped spores. X 200. De Bary. 



Fig. 20. — The same conjugating. x 300. De Bary. 



