TOADSTOOLS AND MUSHROOMS (HYMENOMYCETES) 387 
basidia and may reach the ground directly beneath or be carried 
away by the wind. When favorably situated, the spores grow 
new mycelia, thus com- 
pleting the round of life. 
The basidiospore is the 
only spore formed and no 
sexuality has been dis- 
covered. 
Small brick-like masses 
of organic matter, usually 
consisting of manure and 
containing mycelial 
threads of the Mushroom 
in a dormant state, are 
sold on the market, and 
used in starting Mush- 
room beds, the mycelial 
threads contained consti- 
tuting the so-called Mush- 
room spawn. 
In another rather com- 
Fic. 340. — The Edible Boletus, a 
polyporus Fungus. X 3. 
mon family (Polyporaceae) of the Hymenomycetes, the hymenium 
a =e 
Fie. 341 
tions. X 3. 
.—A Hydnum, a 
Fungus in which the hymenium 
is borne on tooth-like projec- 
Fie. 342.— A Basidio- 
mycete, Clavaria, with 2 
much branched  sporo- 
phore. X 3. 
lines tubes with pore-like openings. These are known as the Pore 
Fungi, and to this family belong some Toadstools, some of which 
are edible (Fig. 340), and the Bracket Fungi, which form shelf- 
