LAKSTADIA. l! 1 7 



found ri.uht nn into aiinunn. even throughout tin- winter. 

 Hibernating -<-lerotia an- alsn pmduced. the cell- nf which -mw 

 nit directly into septate conidiophores with oval cnnidia. 

 Perithecia, externally resemhlin^ pycnidia, are fnimed in May 

 and June on the fallen herrie- nf the preceding year. The 

 a-ei have uelat iimus wall>. which swell and Imrst 80 as in 

 ejaculate their spores. Yiala and Uavaz successfully infected 

 livin- grapes ^>y means nf the larger cnnidia, and al>n l.y 

 the uerminatiim a-cn-pm-es. 



The di.-ease is one of the most dreaded in America. It has 

 I'cen fniind also in Kumpe. having lieen observed in I-'iaiice 

 >ince 188-", tlmu-h imt as yet in (iermany, Swit/erland. Italy, 

 or Spain. Mni>t -itnatinns are favnuraMe tn it. As \vitli 

 i >t her diseases "f the vine, the various varieties liave dilli-i-ent 



..f iv-i>tance. and a judicimis selectinn nf vai'ieties may 

 a un.,d preventive measure. Accnrdin-- to Yiala, the 



t is i'mind in the I'nited States on l.nth wild and 

 cultivated vines, Imt never mi the fruit of |'///.s rupestris, /'. 

 Berlancieri, I', cinerea, /'. /./'/'.s/vn/////, /'. .I/H/////-I.A/, and /'. 

 candicans, and very rarely nn their Leaves. The "vine-stneks" 

 them-elves -utler little nr nntliin^ from the disease. Kathay 

 >ays that J'///.s riparia, \'. rupestris, and /'. Solonis, so im- 

 portant a> -raftin'_;->tocks, are seldom atlecteil; the -iven 

 shoot > nf niher species, ImweNfr. may lie attacki-d and the 



l.o transmitted thmii-h the -raft --dip. 



tin^ the disease, (iallnway, I'rillieiix, and 1'1-j lu-e 

 iinrdeaiix mixture. 1 

 Laestadia buxi <Ie-ni.). The p.-iithecia of tin- -[ u-e 



toimd a> tiny points on \dln\\ spots "n the ln\\er -urf.ice ( .f 

 Ben leave- nf hn\. Thi- fungUS, re-arded hv I e-lua/ieic- as 

 Baprophytic, IS said \>\~ I'.im-j and Cavara to he parasitic. 



PLEOSPOREAE 



Physalospora. 



The jierithecia are funned under ll ..... piderniis. Inn are 

 othcr\vi-c ,|c\nid of Covering; they contain a-ci and paraphy-e- . 



Hie sporee are one-celled, and ..\ni.i ..r ellipiical. 



Elatbaj '. >, I li- Am- i I>-.IM Imllci in--. 



