13fl ODD PESTS 01 CULTIVATED PLANTS. 



FlO-TBBE Canker. 



■ I la ulccrata (Mass.). 



T})')< Is a disease which 1ms recently been recognised as causing 

 id canker in the bark of Fig trees and shelling off large patches 



• fruit of the fungus is produced within minute cavities of the bark, 



imall conidis ooze out to the surface like fine hairs, winch 



ed of conidia stuck together by a tenacious gluten which 



i by moisture and liberates the exceedingly small conidia. 



These conidia obtain an entrance into the bark through wounds, and 



thus the disease is spread. 



imended that all wounded surfaces should be coated with 



tar at once. !'•;• no means should any knife be used in pruning or 



trimming which has been employed in cutting out diseased parts until it 



has been i I and disinfected, as a knife with adhering germs has 



known to infect a healthy tree. 



Gard. Mag. July 28, 1898, fig.; Mass. PI. Dis. 292. 



Fia Ci;kv Mould. 

 Botrytis cinerea (Pers.). 



Only recently we hav< been made acquainted with the serious injury 



inflict* d oi Figs by the attacks of a grey mould, which it is difficult 



pecifically from Botrytis cinerea. The mould appears in 



v patches at the apex of the fruit, being preceded by a soften- 



and rotting appearance of the tissues, which are soon reduced to a 



pulpy mass. No trace ( .f sclerotia has yi t been observed. 



The sterile hyphee are creeping, interwoven; the fertile arc erect, 



in broad patches, of a greyish colour, either simple or sparingly 



branched, with several short simple or divided brancblets near the apex, 



constricted at the septa, smoky-brown (about 12-14 /< 



thick) ; conidia broadly elliptical or almost subglobose, nearly colourless 



il<» 1 1^ i' diam.), collected in somewhat globose heads. 



It is hopele - to dream of saving the fruit when once attacked, but 

 all d fruits should be burn! at once to prevent diffusion of the 



conidia. Spraying uninjured fruit may save them from attack. 

 Mass. PI. l>. ■ 880; Cooke Hdbk. No. L801. 



Mi mi bbi i.i . \ i Spot. 



/'/, . . I'l. Ml. fig. 28. 



Mulberry leav< i omethnee marked by rather large irregular spots 



or bleached ti lied with a definite border line of brown. The 



are pah-, either dirty white or tinged with ochre. 



"\.r the upper i of the Spots numerous black dots 



indicate tl U glob link into the substance of the 



Within tin pr< duced the elongated cylindrical conidia, 



or sporuleS, which are curved, rather ol • the ends, and divided 



068 by th» a, or <- I by four guttules, or nuclei, entirely 



