BYMENOMTCETES. 



nn 



come densely felted into tough masses five to ten or more 

 millimetres in thickness, and of many centimetres in 

 breadth and length ; it frequently also becomes compacted 



Fig. 336. — A, cross-section of the gills or lamellffi (A, of Agarieus eampestris ; h, 

 portiou of pileuB ; B^ section of one of the gills, more highly in«gnifipd ; t, the cen- 

 tra.] tissue of the gill {trama) ; £h, the eub-hymenial layer of short, rounded cells ; 

 hy, hymenium. C, a small portion of B. more highly magnified ( < 6B0) ; *. trama; 

 s7t, sub-hymenial layer ; Q', young basidia and paraphyses ; s', basidium with spores 

 in' earliest stage : s*', basidium with spores nearly ripe ; s'", basidium with ripe 

 spores ; s"", basidium from which the ripe spores have fallen.— After Sachs. 



spores 



into cylindrical root-like forms (Fig. 225, A, m). Upon the 

 mycelium there arise, after a longer or shorter period of vege- 

 tation, small rounded or oblong masses, the young sporo- 



