nKR.MINATIOX OF SACCliAl{UMVCKTK.s. 139 



seveml .liiections. Quo of tl.e fungi j.resent an.l identifie.1 a^ 

 exi-iting :.lcoli<.lic feniiL-ntiition in tliis e.xu<l«tion, WiiN then 

 exHinined In- K. Cm,. Hankex (XX JX.) un.l named .W-A 

 L>ofu'„,u m honum- of its discoverer. This fungus is interesting 

 in many respects, /,//,-/• alia as a very fine example of mvct-lial 

 fahii an.l septation in the eells of s^ane. At present, how.-ver 

 w_e have to do witl» another peculiaritv, mmjelv, the behaviom* 

 of Its endnsjMjres during gei n.ination. Tlii-se sjK.res, iuhtead of 

 putting forth loundc'd l.uds of a shiipc similar to their own a. 

 m the type just deseribed. proiluce an elongated, sausage- shaped 

 pK.mycehum of the kiiul illustmted in Fig. 146, 7"', ir T\\U 

 prunm-elium it is that puts forth tlie buds, and i't therefore 



d 





i " 







"^ ^ 



Km. 146 — Saccharoniyce» LuJwi|;li Hbii6«u. 

 (I. Twogpores. (temiinatiiiK on iht- ..no gl.lc (./ ), fiisii.K (,r >, gTowiiiK into • pronir 

 cehun. (,f ). puttliiK forth a l.uJ (.* , at the crt.w... a.ul «-,.«r.tii.;' i.y the devclJpn"ni 

 or a •eptiin, (,/ >. whirt-uiH.n one of them (./ ) H»»imu» a rounded form, which prv- 



Cell II il* i'*t"ii"f.f..t«.'\.'t..t>i,...i^^l^'""\ *^ 



!{• '' -• to « tulK- which pnMluce««launhtercell» hidependentlj. 



without • t "^r Uaiur,,.) ' 



constitutes an interme«liale stage between the bud cells and the 

 siK)re. Contrary to the usual priHedtue. the veast cells of 

 normal shape produced by this mycelium are not libenited as 

 the result of constriction, but by the development of a septum 

 •^t the place whei e sepaiation afteiwards occurs. This is shown 

 lit ;/"". Very often, however, the piomycelium is not the residt 

 of the germination of one single spore, luit t>f the coalescence of 

 two germ tubes to form one new cell. This process, one of 



actual c.'ll fusion, is shown >i-<l ', where the two spores can be 



seen germinating on the one side, each in an elongatetl form 

 (</'), after which the two fu.se together (*/") to a .single cell, 

 which in turn grows out at one side to form a proiincelium 



('/"■). A daughti'r - cell (./ ) then sejwirates and '.piicklv 



assumes the lemon shape (./ ) chamctvristic of this fungu.s. 



The cell fusion occurring in this instance <litTers from the pre- 

 viously described tyjie in two ways: there it was th«^ exception, 



