508 



after in moist weather or under artificial cultivation, a 

 light -grey mycelium appear-- licariiiu numerous slightly curved. 

 tapering, pluriseptate conidia (Fig. :!lli. In l'.a\aria and 

 1 laden this parasite has caused great lo in the seed-beds of 

 conifers. 



F. inaequale Hover. < )n living leaves "t Tr-i<nt 



Septocylindrium. 



( 'onidia cylindrical, hyaline or pair-coloured, with two or 

 more septa, and produced in chains. 



Septocylindrium aromaticum Sacc. occurs on livin- Act 

 <', ,1,1,11,1*, killing leaves and even plants. The mycelium growa 

 intercellularly and produces spots. The conidiophorc- em 

 in tufts from stomata included in the spots, and give oil' l"ir_: 

 thread-like, pluriseptate, hyaline conidia. 



2. FAM. DEMATIEAE. 

 1. SKI T. AMKROSFORAK. 



I . X,, /,.<,;/. .I//.'/'",/, i,,. ,l, . 



.Many of the -enera of this siili-ect ion contain species found 

 on the living leaves of plant>, luit none of them are je\ "i 

 c importance. 



2. ,V-/Ax, ,Y. .\/n, /<>!!,, i,. 



Hormodendron. 



.Mycelium greyj e]iiph\-tic, and creeping. Conidiopborea erect, 



1. ranched, and septate. Conidia -plieiic.-d or o\oid, uni.'ellulai\ 

 and produced in chains. 



Hormodendron hordei I'r.' This produces a char.icieiistir 



s[)ottin-' of ihr haulms and leaves of liarle\, accompanied I'N .1 



.-iiintin- of the whole plant and poor development of il 



This is not a true parasite, luit when il appear- in |iianiity 



it has co||-ideral.le ell'eel. ;i!lackin- whole lirld- alld c.Ul-ill'_' 



! injury. The >poi- ,md conidia are found al \\ild 



//!</ HIH in H ri ii it in on the mal-'jili- of I'o.nU alld liclds. 



1 Kruliii.' 111 /...). // I /'/,,/,/../. IV., 



JVM 



