220 



PLANT LIFE. 



these chambers rupture at the maturity of the spores, or e\en 

 earher. 



The fructification may Le irregularly lobed, sessile and 

 gelatinous, or much branched and cylindrical or flattened, 



Fig. 217. — Fructification of Hydmim ii'ihricatTini . 

 The surface of the projecting spines on tlie under 

 side of tlie cap are covered witli the hyirieniuni. 

 Natural size. — After Kemer. 



with the hymcnium 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 ( ap, as in Agari- 

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

 jections in the same region, as in 

 Hydnum (fig. 217); or it maybe 

 a semicircular, sessile body projci ting 

 from the substratum like a shelf or 

 bracket, with the hymenium lining 



Fk;.2iS. — Trunk of nn asli tree, 

 slK)\\ing Inictiiications of l\^!v- 

 /'''rt/s ii^iutriiis. Alter a pho- 

 tograph by Von Tnbeul. 



innumerable minute 



