THE TYPICAL MYCELllM. 7 



tiun. Fun^i exhibiting this class of siiiij»le niy«-«-lial HtnictuiH 

 lire flassetl umler the j^eneric imiiie Hyphomycetes <•! Thread 

 Fungi. The ttTin Mucedinae. oocurrinf; in the French unil Enj:Uhh 

 iitiratiuv. t'Xprt-ssi's ahuut tlie stiuie thinj;. It may Ik- reinark«*<l 

 in jiassinj.' that si'veral l>ot<ini.sts, e.,/. Stnishnrger, Null, S<h«-nck, 

 and Schiniper, in their botiinical text-lxxjk, enj|>loy the name 

 HijiJmiiiij.-ttfit in a far wider sense, naniely. to include the whole 

 of the Kiiiiii^fetef, the reason for this being that the production 

 of hvphas is chanu'teristic of these fungi, and constitutes a funda- 

 mental distinction between them and the other divisions of the 

 funtrus faiiiilv, the Si'/iiz">itt/ret>s in particular. Nevertheless, in 

 the following pages we will apply the term in it.s more restricted 

 sense. 



In many of the other classes of Kunii/eetfS, the development of 

 the mycelium does not cejise at the .-^t-ige we have described as 

 the typical mycelium, but extends further, to the production of 



G 



.^m 



^^ 



f un, 



Via. 94. — Bfitrytis cincrtra. 



liitfrKr<JWth. Each o( the twn p<.-nultiinato cv\U of the depiitnl fr.-.jii..^! 

 liiitii li:i^ ^Towti into it« neitrhlxiur, and there l«n«.nic M-jmratr.! 

 llic ctiitnil i-ell o( the mycelial thread has put forth aluionnall) . 

 fruelitlcation. (AJtfr P. Litutiu-r.) 



atjijrciiatirtn.^. of the forms known a> mycelial threads ;ind 

 mycelial films. A coml)ination of these two forms constitutes 

 the large benlies known in coll<M|uiaI language as •' mushrooni> " 

 or '•fungus"; the lK)tiinist, however, terming them fungoid 

 bodies. The cajmcity of forming such Ixxlie-^^, iipni or within 

 which the organs of fructification are situated, is confined to the 

 most highly developed .«<pi»oies of fungi. An exjimple is given in 

 Fig. 95. This, however, is only one variety (though appearing 

 in numerous mmlifications) of the coalescence and intertwined 

 growth of hypha'. another form being that of the so-call<- 1 

 sclerotium or hard mycelium. The well known ergot of r\. . 

 which will be more closely de.scribed in the last section but tmc. 

 ftirms an example of a sclerotium. This is constructetl of closely 

 intertwined hyph:i\ furnished with a .-^tore of nutrient n * ' '. 

 and constituting a hard permanent form, which, afti-r a \ ■■ 



period of quiescence, awakens to active life, puts forth oi-gans of 



