-' LEROTIA OF UNKNOWN AFFINITY. _''>7 



neck of living llliinnntlinx minor; thc-e Undies lie-in their 

 development in the cambium and lark, which they kill: after- 

 wards the wood itself niav lie attacked. 



Sclerotinia with Botrytis-conidia.' 



Scl. Fuckeliana I >> l>ary. This Sclerotinia is distinguished 

 from all preceding ones ly its passing through a lint ,- iff ix- 

 conidia stage i //"///// ix cinerea). If coiiidia are sown out on 

 plum-juice gelatine, there a]i]iear within fourteen to twenty-one 

 day- round groups of sclerotia, which soon 

 give rise to conidia. From such artiticially- 

 reared sclerotia I have never succeeded in 

 -vttiiiu the /'' :o'-fruit, so easily cultivated 

 from sclerotia ;_rat In-red in the open-air (>.//. 

 from vine leaves i.- Thus the actual proof 

 that ,S,y. Fuckeliana and Botrytis cinerea arc / ' 



_<>s in the life of the same fungus is not ^l^. 

 ivacln-d by i\i\-* e\]icriment. :; The two forms 

 are, however, very frequently met together. 



The sclerotia of >'</. /'//,/,'/////,' are produced in the nie-oplivll 



if tin- leaves, also in the parenchyma and epidermi- of the 

 li'i-t-|,];ints, Inn never in the wood. /' -./-."-fruits with flat 

 apothecia are produced from them. Sclerotia are found in vine 

 leaves and over-ripe -rape- (Fig. L40), especially of the liie-lin-, 

 < 'rleans, and Sylvaiier varieties. 4 < >tln-r plants and fruits may 



also be attacked. Diseased parts become in-own fnnu the 



effects of the para-itic mycelium, and die ,i|f. Tin- mycelium 



an only live para-itic after it has U-en .-t ivnutliened l>v a pre- 

 vious -api-ophytic existence. Ascospores are thus nnahlc to 



effect direct infection. The //n//7///>-conidia seem, llo\\e\rl 

 <-apalil<- of directly inleclin^a Im-t-plant . at least I have aluav- 



-llcceeded in illlectill- ('ollifel'S Mlcce.--fu lly with tile culiidial 



fi'i'in Jinlri/lix I)nii<il<i.<ii. 



Bo try (is amongst 'In " l''nn-'i im|n'itivti." 

 Brefeld, Mi-it i\.. p. !_".', anil \., \>. '.'<\'<: luii'-ui, ll'iii-ii-i- . !\> until!** >/. 



nl.r 



'i >i in.ru i 



X'i|il. /' /' . |.. 71- -i ili- iii.ii /' fl ni~ iiiav In- n-ai-i-il timn tl.- 



i ia .ilti-i- t lit-y li.ivi- i-i--ii-i| a \ 



1 Muller-Thui'gaU, " hn- Ivldtanli- il. 'l'ianln n / ' "lirii-rh. J . |s^^ 



I:-!, in /;. ',-//,///, \\\\., |sss, |, 94). 



