THE FUNGI WHICH CAUSE PLANT DISEASE 



465 



Sporophore with a pronounced sterile 



persistent base 



Sporopliorc witliout a pronounced 

 sterile base 

 Inner peridium opening irregularly. 

 Inner peridium opening by a basal 

 pore, the outer peridium break- 

 ing equatorially and the upper 

 half with the attached inner 



peridium forcefully ejected 



Capillitium free, short-branched ynth 

 pointed ends 

 Sporophore with a pronounced per- 

 sistent sterile base 4. 



Sporophore without a pronounced 

 sterile base 

 Inner peridium paperj', opening by an 



apical mouth 5. 



Inner peridium thick, breaking 



irregularly, capillitium spiny. . . 



Outer peridium splitting into star-like re- 



fle.xed, persistent segments 



Inner peridium opening by a single mouth 



Inner peridium opening by several mouths 



1. Lycoperdon, p. 465. 



2. Globaria. 



3. Catastoma. 



BovisteUa. 



Bovista. 

 6. Mycenastrum. 



Geaster. 

 Myrio stoma. 



Lycoperdon Tournefort 



Sessile, with a pronounced 

 sterile base; peridium thin, 

 opening regularly liy an apical 

 perforation, smooth, warty or 

 spiny; spore-mass and capilli- 

 tium filling the interior of the 

 sporophore with echinulate 

 spores and even, simple hy- 

 pha>. 



L. gemmatum Bat. is re- 

 ported by Cavara "■* on fir 

 trees in Italy, sending its 

 rhizomorphic mycelial strands 

 through cambium and bark causing the destruction of both 



Fig. 334.- 



-Lycoperdon gemmatum. 

 Lloyd. 



After 



