210 MORPHOLOGY. 



year's growth as in the pine polyporus (P. pinicola). In the birch poly- 



porus (P. fomentarius) the tubes are quite large. It also occurs on other 



trees. The beech polvporus (P. igniarius, also on other trees) often be- 



Coral fungus. Hydnunn coralfiides, spines han^in^ duwn from branches. 



comes very old. I have seen one specimen over eighty years old. Not all 

 the tube-bearing fungi are bracket form. Some have a stem and cap 

 (see fig. 245). Some are spread on the surface of logs. 



427. Hedgehog fungi (Hydnaceae). — These plants arc bracket in form or 

 have a stem and cap, or are spR-ad on the surface of ^\"(>*)d; but the finest 

 specimens resemble coral masses of fungus tissue (example, Ilytinum, lig. 

 246). In UKjst (jf them there are slender processes resembling teeth, spiiies 

 or awls, which depend from the under surface (fig. 247). The fruiting 

 surface covers these spines. 



428. Coral fungi or fairy clubs (ClavariaceaeV- These [ilaiUs stand 

 upright from the wood, leaves, or soil, on whii h tlu-\' grow ((.-.xample, 

 riavaria'). The "coral" ones are branched, \\'hile tlic "fairv iluhs" are 

 simple. The fruiting surface covers the entire exposed surface of the ]ilants 

 (fig. 248). 



