BASIDIOMTCETES. 



173 



smaller and less common P. caninus is found on rotten tree-stumps. In 

 Clathrus cancellatus the receptacle expands into a bright red, reticulate struc- 

 ture. A native of the South of Europe. Coins, Aseroe, Mitromyces. 



Order 2. Sphaerobolacese. An intermediate layer of the peridium swells 

 when ripe, becomes convex, and ejects the remaining spherical portion of the 

 fruit-body which contains the spores. Sphcerobolus carpobolus has small, 

 spherical fruit-bodies which open in the form of a star. 



FIG. 179. Phallus tmpiidicus (Stink-horn), somewhat diminished. Fruit-bodies in all 

 stages of development (b, c, d and 7c-m) are seen arising from a root-like mycelium (a) ; d 

 longitudinal sections through a fruit-body b3fore the covering has ruptured. 



*Family 4. Gasteromycetes. 



The fruit-body is angiocarpic, fleshy at first, and later generally 

 more or less hard and continues closed after the spores are ripe. 

 The tissue lying immediately inside the peridium is termed the 

 yleba ; it is porous, containing a larger or smaller number of 

 chambers lined with the hymenium, which is either a continuous 



