LEPTOSPHAERIA. 



2-21 



just over the mot, thu> resembling ih>- -ymptom- 

 an attack of Hes-ian Fly. 



L. tritici 1'a-s. is said ly Tiaiik t" In- dr-t nirt i\v l \vlu-at in ( ><-\ inan\ . 

 (Set- al-" ' 'I, i,],, .-if,!, ,;.!, ). 



L. subtecta Wiut. 1 In T\i-i-l tin- ]>eritln-ria of tlii- >|n-ri- a.-.-..iii|.an\ 

 ilii-i-a.-i- "t' tin- li-aM-- nf Eri'-'i carnea. Simultaneously //<//>"' 

 Tnl). and ><fili'i' ina Tuli. wnv t'"imd. tin- furnu-r appi-ariii'.: t cause 



the di-ra-- ( see \>. -2'.', \). 



L. anceps Sari-. Un li\inu ''ram-lio \ /,'/'//<-.> nigrum. 



L. vitigena (Si.-luilxer). On living tnidiil- nf tin- \iin. 



L. circinans San-, (see l!l>i:"i'tn,,i,i \>. ^ul). 



L stictoides Sacc. mi /,,>//.,//-,,// tiili/iif,-,-!! is an Ann-riran -|- 



Pleospora. 



The black perithn-ia are not dcvcltiju-d on a simma. and 

 are at first ri.iicralrd in the host-ti--ui-> mdy. They contain 

 para]/li\--i-s and I'pjit-sjmivd asci. Tin- Spores arc mult i-c] .lat-. 

 and generally coloured. 



Pleospora hyacinth! Sor. 2 produ< i > l.lack coatings on tln- 

 liidli-x-al'-- of hvai-inth. The iii\-(-cliuin in>iilc tin- tissues i- 



* c 



colourlc-s, luit out>iilc i- dark red. and it- i>rc>nicc causes disease 

 of li'-allhy ]>art>. ('i-rlain ]H-riilin-ia which appear on the luill.- 

 scales in autumn may peihap- ln-lon- to this funuu>. 



P. tropaeoli Hal-, i- -ivcn as a disease <>f Tnqueoluin in U.S. 



America/ 



P. hesperidearum C'att. Tin- conidial form (,s)-,-'/</,s/ / / ;////, 



]n*]>.) ajipcar- as a lilack coaling <>n tlic olaujr. 



P. ulmi l-'r. ('"/-. minor) Allescher, causes a leaf->poi on youn-j 

 elm-seedlings, and the Leaves dn-p oti prcmaturciy. 



P. napi Fuck, is the cause f iapc->mut. l.caf--pot- laiiyin-j 

 conidial cii.-hion- (Sporidesmium cxitiosum Kuhni appear on the 



ra]n- and other allied root-clop-. 



"Mark smut-diseases' IM\.- been i-riiln-d t,i Polydesmus (Spori 

 desmium) exitiosum (var />"><>') i\ raii..t ; Hclmiuthosporiuin gramineum 

 li'alili. ran>iii'j witln-riii'j t r\i- and !MI!I-\ leaves] and Sporidesmium 

 putrefaciens l-'m-k. \vliirli attark- and kill.- tin- _\<niii-_: heart-leaves "t beet- 



1 v. Tul,. . .. r. ,. Centra . \\i.. ' 



uer, ll'iiiili,ih k i/. Pjianzcnkrankheiten, n. Anil., \>. .'lid; unl /" 

 /. ,/.. Rinytlkrankheit . /. A'// --'/*'/ >l. //i/n'-m? 1 .- . l 



A'. Jersey Affric. / . - . / , 1.':. I s '.'-'. 



