Si I.EKOTINIA WITH I'.oTK Y M--I o.\ 1 1 >i.\. 



269 



Sclerotia, aloii- with Botrytis-conidia, have been found fre- 

 quently on diseased geranium-. 



Iiurin- the summer of 1894 a witlu-rin- of twi-- of /'/// ,///.s 



////////// occurred in several -ardens at Munich ( Fi-. 141). A 



mycelium was found in the bark, h-af-petioles. and yoiin- 



ovaries, while /;></,/// /Vcoi i id ia were 



developed on the dead part-. 



With these I successfully infected 



young needles and twigs of spruce. 



Sclerotia were also formed on plum- 

 it ine in fourteen days. The 



parasite in this case had killed old 



twi-s of Pi-nun*, and also infected 



twigs of ( 'ollifers. 



Botrytis Douglasii is a para-it . 

 which I studied some time ago on 



account of its presence almm with 

 a disease on the I )oii-las tir ( /'v ii- 

 /A//X//Y" Douglasii)* I have since 

 had reason to believe that it is 

 allied to some form of sderutium 

 like that just considered, and my 

 view is -upported by Ilchivns.- 

 The di-ease as seen in various 

 part- of i lermany is characterized 

 by withering, curlinu-up, and deatli 

 of \-oiin- shoots towards the >um- 

 mit.s uf young seedliiiL:-, and on the 

 lower twi-s of older trees up to 



.diollt live feet aboVe the -rolllld. 



In autumn, black selerotia alioiit 

 t he size of ]iin heads, break throu-h 

 the epidermis under the old bud- 

 BCalee at the ba-e of dead >hoots, 

 and on the needles. Iii addition to these, smaller ma 

 tangled hypliae arc also foi-nied. When -derotia are placed 

 in a nioi-t chamber, tufts of civet eonidiopln nv- arise, and 

 ndi, forming numerous whorls of conidiophoi v-. from \\hich 



!'[!.. I I' M till 1 



I 1 '..li- I'h. Tli" y..'U!^' slh"'t- ui'l 



A\ \ "I 1 i ' 



(Aftei I 



1 v. '1'iiliriif, li-itfi-j' -.. Kenntnisa d, I'.'nnnl., , l'.i-rlin, 



!; in. DI / h. i. PflanztnJenmklieittn, 189 



