THK FUNGI WHICH CAUSE PLANT DISEASE 



557 



Conidia long-clavate; masses dark. ... 2. Rhopalidium. 

 Conidia 1 to scveral-ciliate, usually at the 



apex 3. Pestalozzina. 



Conidia united at base into a radiate or stel- 

 late group 4. Prosthemiella. 



SeptoglGeum Saccardo (p. 556) 



Acervuli very small, subepidermal, erum- 

 pent, pallid; conidia oblong. Some twenty- 

 five species of leaf parasites. 



S. hartigianum Sacc. attacks maple, killing 

 very young twigs. 



S. ulmi Fr. is found on elm leaves=Phylla- 

 chora ulmi. (?) 



S. mori Lev. on mulberry=Mycosphserella 

 mori. (?) 



S. cydonise (Mont.) Pegl. is on the 

 quince; 



S. manihotis Zimm. on manihot in Java. 



S. arachidis Rac. is seriously injurious to j-j 

 the peanut in Java."^ 



S. profusum E. & E. is found on Corylus; 



S. fraxini Hark, on ash. 



375. — S e p t o- 

 g 1 oe u m acerinum, 

 conidiospores and 

 conidia. After Sac- 

 cardo. 



MelanconiaceaB-PhaeophraginiaB (p. 537) 

 Conidia dark, 2 to several-septate, oblong to cylindric. 



Key to Geneba of Melancomaceae-phsBophragmisB. 



Conidia mutic 



Conidia separate, not in chains 

 Conidia oblong or elongate, not stellate 

 Conidia curved-attenuate, i. e., hya- 

 line-rostrate 

 Conidia dark, except the hyaline 



beak 1. Scolecosporium. 



Conidia with 2 inner cells opaque, 



others clear 2. Tozosporium, p. 558. 



