196 



CTIYPT0GA3IS 



menial surface is thrown into teeth; in the Pol}'- 



porus sub group (Fig. ?yJS) the arrangement is 

 exactly the reverse, for the hynienium lines the 



>y numerous pores. Branches, teeth, pores, and gills 





devices for increasinj. 

 surface. 



the extent of spo- 



32(1. Clavaria. 



Hv'-lnum. 



328. Polyijorus: p, pures ul the 

 under surface. 



LICHENS (Figs. 329, 330) 



461. Licliens form gray or yellowisli patches on rocks 

 and tree.s. fcstnons 011 tlie Lraiiehe.s, and incriisiting slieets 

 and spongy mats on barren soil. Tliey are commonly 



known as " Moss '" — a wholly 

 wr(i)ig name, as will Ije seen when 



■i2'J. A licliHii [I^liiiscla strllaris) : 

 v., apothecia. 



330. Usnea l/arbata. 



