552 THE FUNGI WHICH CAUSE PLANT DISEASE 



C. malvarum Br. & Casp.^^ (=C. althaea.) 



Epiphyllous and caulicolous; spots brown, sunken; acervuli 

 erumpent; setae dark brown, abundant, 1 or 2-septate, usually 

 colorless below, 60-109 x 3-5 ii, appearing after the conidio- 

 phores which are colorless, cylindric, tapering slightly and apically 

 rounded, slightly longer than the conidia; conidia irregular, oblong, 

 granular, flesh-colored in mass, 11-28 x 5 /i. 



It is described by Southworth ^"^ as the cause of anthracnose of 

 the hollyhock. The fungus closely resembles C. lindemuthianum 

 but cross inoculations on the bean failed to produce disease though 

 on hollyhock inoculations succeeded easily. 



C. schizant.hi Jensen & Stewart was found on greenhouse 

 Schizanthus plants in Ithaca.'^* 



C. agaves Sacc. 



Spots pale; acervuli conic; setae few, 90-100 x 5-6 m, brownish 

 ochraceous, 2 to 3-septate, conidia 22-26 x 4-5 n; conidiophore 

 subramose, fuscous at base. On sisil hemp and agave."' 



C. bletiae Hals, is on Bletia. 



C. violae-tricoloris R. G. Sm.'**"!** 



Spots pale-yellow on leaves. Dead areas on petals occur with 

 more or less deformity of blossom. Spots at first orbicular and 

 definite, later confluent and irregular, acervuli numerous, 50- 

 150 n, often confluent; stroma usually poorly developed; setae 

 mostly smgle or in pairs, 20-70 /i, deep brown, 1 to 2-septate, 

 tapering gradually to a point; conidia oblong or slightly curved, 

 ends blunt, 20 x 5 ju; conidiophores short, hyaline. 



It causes spotting of pansy leaves in several states and leads 

 to failure to bloom. 



C. anthurii Del. occurs on Anthurium; 



C. luxificum H. & D. on cacao in the West Indies; 



C. elasticae (C. & M.) Kpo. on Ficus. 



C. primulae Hals.^ is reported as causuig a leaf disease of the 

 primrose. 



C. kentiae Hals, is on palms.^^ 



C. omnivonun Hals. 



Spots dry, irregular in outline; conidia 20-28 x 3-5 /u, falcate; 

 setae elongate, acute, black. 



On Aspedistra and other plants.^'* 



