Untersuchungen über d, Pilze, welche d. Faulbrut d. Bienenerzeugen. 157 



Ascotricha B. 



Perithecium thin, free, moiitliless, seated on loose, branched, 

 conidiiferous threads. Asci linear, containing dark, elliptic spo- 

 ridia. 



1. Chartarum B. On damp paper. 



Berkeley hat übrigens diese Art schon im Jahr 1838 entdeckt. 

 Wir entnehmen eine etwas genauere Beschreibung, welche seiner 

 Veröffentlichung entlehnt ist, einem neueren Pilzwerk, woselbst 

 sich eine Abbildung der Ascotricha befindet *). 



„At first it appears as a minute branched mould interspersed 

 „with globose brownish conidia. As it advances in growth, globose 

 „black peridia become visible amongst the threads, clothed with 

 „and supported by alternately branched obscurely -jointed fila- 

 „ments, the branches of which generally form an acute angle with 

 „the stem. The ramification of this is very peculiar, the stem and 

 „main shaft of each subdivision being almost constantly shortened 

 „andsur mounted by the branches given off near its apex; this 

 „again, is often abbreviated and another branchlet given off, 

 „which again surpasses it; and occasionally the same circum- 

 „stance takes place a third time. The apices are clavate and co- 

 „lourless; the rest of the filaments, when viewed by transmitted 

 „light, brown, even, an pellucid; a few globose conidia are usually 

 „attached to them. The conceptacle is thin, black to the naked 

 „eye, of an olive brown under the microscope, filled with a mass 

 „of linear extremely transparent asci, each containing a single 

 „row of broadly elliptic chocolate sporidia. These have a paler 

 „border; sometimes the colour entirely vanishes, either from age 

 „or abortion, and there is only a minute globose nucleus or more 

 „probably a vesicle of air, in the centre ; occasionally they become 

 „so transparent that the globular bodies alone are visible. After 

 „the conceptacle burst, several are frequently collected together 

 „into an irregular linear body, which consists principally of the 

 „conglomerated sporidia." 



Diese genaue Beschreibung passt in allen Details auf unsern 

 Pilz, namentlich diejenige der Aerosporen - tragenden Form, wie 

 man bei Vergieichung unserer Figg. 18 und 26 mit der Beschrei- 

 bung sehen wird. Nur fanden wir, wie oben gesagt wurde, kei- 



*) M. C. Cooke, Rust, Smut, Mihlev»^ and Mould. London 1865. p. 

 175. 176. 



