THE FUNGI WHICH CAUSE PLANT DISEASE 



603 



Diplococcium Grove (p. 602) 



Conidiophores erect, septate, branched, olivaceous; conidia 

 catenulate, 2-celled. 



Fig. 404. — Cycloconium 

 oleaginum. After Boyer. 



Fio. 405.— Clodosporium cu- 

 cumerinum, mycelium, a 

 hyphal knot, conidiophore 

 and spores. After Hum- 

 phrey. 



D. conjunctum (Bon) Sacc. is reported as a parasite of the 



geranium 



Cladosporium Link (p. 602) 



Hyphse decumbent, intricately-branched, olivaceous; conidia 

 globose to ovoid, greenish. In part=MycosphaBrella. See p. 243. 



Some one hundred seventy-five species, many of them of 

 economic importance. 



C. fasciculate Fr. on hyacinth =Pleospora hyacinthi. See p. 260. 



C. herbarum (Pers.) Lk. on many hosts =Mycosphaerella tu- 

 lasnei. See p. 247. 



