518 THE FUNGI WHICH CAUSE PLANT DISEASE 



Pycnidia not maculicole 

 Pycnidia complete at top, 



usually papillate 10. Rhabdospora, p. 525. 



Pycnidia more or less incom- 

 plete at top 

 Pycnidia gaping, showing a 



gelatinous spore mass. 11. Gelatinosporium. 

 Pycnidia not exposing a ge- 

 latinous mass 



Pycnidia foliicole 12. Phleospora, p. 525. 



Pycnidia rami-caulicole. . 13. Phlyct«na. 

 Pycnidia suberose, incomplete, often pale 



Pycnidia cespitose 14. Micropera. 



Pycnidia merely gregarious 15. Micula. 



Pycnidia in a stroma 

 Conidia 4 to 6-fasciculate on a conidio- 



phore 16. Eriospora. 



Conidia separate 



Conidia setose-i)enicillate 17. Dilophospora, p. 525. 



Conidia muticate 



Stroma superficial, setose 18. Septodothideopsis. 



Stroma erumpent or immersed 

 Pycnidia distinct in the stroma, 



conidia hyalme 19. Cytosporina, p. 526. 



Pycnidia as locules in the stroma, 



conidia colored 20. Septosporiella. 



Trichoseptoria Cavara (p. 517) 



Pycnidia separate, erumpent, on spots, membranous, hairy; 

 conidia needle-shaped, septate. 



A single species. T. alpei Cav.*^* is reported by Cavara as 

 injurious to lemon fruits in Italy. 



Septoria Fries (p. 517) 



Pycnidia immersed, usually on leaf spots, globose lenticular, 

 ostiolate, membranous, black; conidia narrowly elongate to fili- 

 form, multiseptate, hyaline, conidiophores very short. 



Over nine hundred species, all parasitic, several of them of 

 considerable economic importance but most of them occurring on 

 non-economic hosts. 



