STKKKUM. 



431 



y 



-.;" 



The very characteristic destruction of oak-wood caused by 

 this fungus wa- investigated by 1,'. Harti-. The d i wood 



has a uniform dark-hrown colour, hroken at intervals l.y white 

 rounded spots or hollow ravine- : 

 hence it receives the name of 

 " partridge-wood." In the white spots 

 the wood has l,y the action of the 

 mycelium become transformed into 

 cellulose, the middle lamellae and 

 stareh-^rains bein- dissolved out. In 

 the neighbourhood of old eat en-out 

 cavities the process of decomposition 

 i- -liuhtly changed, so that the cell- 

 walls disappear without previous trans- 

 formation into cellulose. 



CLAVARIEAE. 



Typhula. 



Sporophon.'s tilanieniMiis, and, as 

 rule, develnp t -d from sclerotia. 

 with four colmiile-- -niooth- 

 coated spores. 



Typhula graminum Karst. 1 Tin- 



appeared on wheat plants in Sweden, 

 killing them and fnrmiiiL; yellow 

 rotia S>-/, ,-<>lin in ful ,- n at I-Y. ). 



a 



l-'i' . 261. > 



tii>n. l.ni)(.'itiiiliii:il Bectioi 

 timber, i 



structure. 



HYDNEAE. 



Hydnum. 



s \-ei-y variable in form and 

 hymenial layei-s ai-e -pivad over teeth-like 

 hasidia hear 1'oiir white sporo. 



Hydnum diversidens !>.-( I'.ritain). The s 

 yellowish-white crusts or I. rackets, with -piny 

 the lo\\er side. The li\ineliial l.ix.-r eon-ists at til-! o| l 

 o|d\. later, Imuever. liypliae grOW up through i' and 



I Landtl ' l^T 1 '. 



I'll' Z ". 



The 

 The 



\\\\\ 



,.i~idia 

 1'MJld 



