276 THE FUNGI WHICH CAUSE PLANT DISEASE 



G. oryzae Miy. occurs on rice.^" 



G. rubi Rehm may occasionally cause disease of blackberry 

 canes."* 



Rehmiellopsis Bubak & Kabat (p. 264) 



Similar to Rehmiella except that the perithecia are not beaked 

 and the pycnidia do not have a definite opening. 



R. bohemica Bub. & Kab.; (conidia=Phoma bohemica)^^ oc- 

 curs as a parasite on fir needles. 



Clypeosphseriaceae (p. 223) 



Perithecia immersed, astromatic or with a pseudostroma built 

 of hjrphse which, with the adjacent substratum, forms a thin cly- 

 peus that is usually evident only above; ostiole short to long- 

 beaked, erumpent, walls mostly carbonous to membranous; 

 paraphyses usually present. 



A small family chiefly saprophytes. 



K&T TO Genera of Clypeosphaeriaces 

 Spores 1-celled 

 Perithecia soft-membranous, spores hyar 



line or brown 1. Trabutia. 



Perithecia leathery; spores brown. 2. Anthostomella, p. 276. 



Spores more than one-celled 

 Spores with cross walls only 

 Spores cylindric, ellipsoid or fusiform 



Spores hyaline, 1 to 3-septate 3. Hypospila. 



Spores brown 



Spores elongate 4. Clypeospbsria. 



Spores fusiform, more than 4- 



septate, sometimes muriform . 5. Phaeopeltospharia. 



Spores filiform, hyaline to yellow 6. Linospora. 



Spores muriform 



Spores ovate, brown 7. Peltosphseiia. 



Spores short, fusiform, hyaline 8. Isothea. 



Anthostomella Saccardo 



Mycelium fusing with the upper surface of the substratum to 

 form a thin, black, rounded pseudostroma; perithecia sunken, sub- 



