nun n.AKi \. 



Piricularia. 



503 



Conidia grey, pluricellulur, sonie\\hat pear-shaped, and pn>- 

 duced from tlie apex of simple erect conidiophure^. 



Piricularia oryzae I'.r. et Cav. This .specie., i- described 

 by Hriosi and ( 'avara as can-ing a di-ea-e of riee in Northern 

 Italy. The plants become spotted and reddish-brown in summer. 

 tinally withering. The conidiophores arise mi tin- -]>ts mi tin- 

 r surface of the leaf, and hear light-uiw thrM--eL-lled 



KM;. SOS. .'/ (v. TI 



conidia. l>iseased plants may be found bearing thi< fungii> 

 only, frequently however it is in company with other fuiiui. 



Cercosporella. 



('onidia hyaline, similar to tho.M- of Oercospora, and produced 

 IVom simple or branched hyaline conidiophi.; 



Cercosporella persica Sacc. i> para-it ie mi li\in- lea\. 



I'eaeh. ||| Alljel'iea it ha> hee|| UlloWll sillee IS'.MI, aild leeep. 



the name \' "frosty mildeu.' It causes \elln\\ >].nt- nil the 



. . 



lower surface i,f the leaf. 



C. pastinacae Karst. occun on livin- 1. of cuhi\ 



par-nip. 



