THE FUNGI WHICH CAUSE PLANT DISEASE 517 



Camarosporium Schulzer von Miiggenburg (p. 516) 



Pycnidia immersed, erumpent, separate, 

 globose, ostiolate, papillate, carbonous or 

 submembranous; conidia ovate to fusiform, -, 



muriform, with 2 to many cross walls. -^ /^l 



Over one himdred twenty species, chiefly 

 saprophytes. ■fvii m 



C. fissum (Pers.) Star, caiises injury to ^"* 



roses. 



C. yiticola (Cke. & H.) Sacc. is reported on 



grape; Fio. 3S8. — Camaro- 



C. mori Sacc. on Morus. S?S-Ttkrba^ck."'- 



Sphserioidaceae-Scolecosporae (p. 480) 



Conidia hyaline or light colored, elongate-fusoid, rod-shaped 

 or filiform, continuous or septate. 



Key to Geneba of Sphsrioidaces-Scolecosporse 



Pycnidia separate 

 Pycnidia membranous or carbonous 

 Pycnidia superficial 

 Pycnidia hairy 

 Conidiasingleontheconidiophores 1. Trichocollonema. 

 Conidia ternate on the conidio- 



phores 2. Gamospora. 



Pycnidia smooth 



Pycnidia beaked 3. Comularia. 



Pycnidia not beaked 



Conidia usuallyexpelled in a ball 4. Collonema. 

 Conidia not expelled in a ball. . 5. Septorella. 

 ycnidia immersed or erumpent 



Pycnidia hairy, maculicole 6. Trichoseptoria, p. 518. 



Pycnidia smooth 



Pycnidia beaked 7. Sphaerographium. 



Pycnidia not beaked 

 Pycnidia maculicole, mainly 

 phyllogenous 



Conidia hyaline 8. Septoria, p. 518. 



Conidia colored 9. Phseoseptoria, p. 525. 



