22O 



PLANT LIFE. 



these chambers rupture at the maturity of the spores, or even 

 earlier. 



The fructification may be irregularly lobed, sessile and 

 gelatinous, or much branched and cylindrical or flattened, 



FIG. 217. Fructification of Hydnuni imbricatuut. 

 The surface of the projecting spines on the under 

 side of the cap are covered with the hymenium. 

 Natural size. After Kerner. 



with the hymenium covering the 

 whole or the upper part of the body, 

 as in Clavaria (fig. 215) ; or it may 

 form an umbrella-like, stalked cap, 

 as in toadstools, with the hymenium 

 extending over radiating plates on 

 the under side of the cap, as in Agari- 

 cus (fig. 216), or over spine-like pro- 

 jections in the same region, as in 

 Hydnum (fig. 217) ; or it may be 



. . FIG. 218. Trunk of an ash tree, 



a semicircular, sessile body projecting showing fructifications of roi y - 



ponis ignarius. After a pho- 



irom the substratum like a shelf or tograph by Von Tubeuf . 

 bracket, with the hymenium lining innumerable minute 



