CHARACTERISTICS OF THE TRUE FUNGI 



47 



Fig. 13. — Details of the mycelium of Armillaria mellea. I, Piece of mycelium 

 a slide; //, piece of old mycelium {Rhizomorpha subterranea) ; III, rhizomorph pro- 

 ucing fruit bodies; IV, apex of rhizomorph capable of growth; (o) peripheral hyphae; 

 )) pseudo-epidermis; (c) growing point; {d, e, h) pith; (h) hollow center. (/ and 

 V after Brefeld; III, after Harlig in Zopf, Die Pilze, 1890, p. 25.) 



