THE PSEUDORHIZA OF MYCENA GALERICULATA 353 



came into existence, in 

 and they then grew 

 upwards through the 

 overlying leaf-mould. 

 The youngest fruit- 

 body (a), at the time 

 the fruit- bodies were 

 found, had not yet 

 emerged but, by means 

 of a pseudorhiza, was 

 gradually pushing its 

 pileus upwards into the 

 light. Its pseudorhiza 

 appeared to be increas- 

 ing in length solely by 

 intercalary growth just 

 beneath the pileus and 

 the enclosed rudiment 

 of the aerial stipe- 

 shaft ; and its pileus 

 was very small, hard, 

 and conical. The free 

 end of the fruit-body, 

 in form and mode of 

 elongation, thus closely 

 resembled the root-tip 

 of a Phanerogam and 

 was admirably adapted 

 for pushing aside ob- 

 stacles in its upward 

 progress. It differed 

 from the root-tip of 

 radicles, however, in 

 that it was growing 

 upwards instead of 

 downwards. We may 

 conclude from the 



the first place, at the surface of the wood, 



VOL. VI. 



Fig. 176. — Mycerm galericulata. Section through 

 leaf-mould, e, and a buried stump, d, to show 

 origin of fruit-bodies from the wood and mode 

 of development of the pseudorhiza ; a, a 

 pseudorliiza which is elongating just beneath 

 the rudimentary pileus ; b and c, f ullj' developed 

 fruit-bodies shedding spores ; in c, the pseudo- 

 rhiza and stipe, which are continuous with one 

 another, are both hollow in the centre. 

 Reduced to two -thirds natural size. 



2 a 



