Index to Illustrations* 

 M 



FRONTISPIECE. A wound parasite (Pleurotus ulmarius) on the trunk 

 of a maple tree. Original. 



FIG. i. The mycelium of a food-mold fungus. After Zopf 



FIG. 2. Various special absorptive or sucker threads of parasitic 



fungi After Zopf n 



FIG. 3, Fungus strands and storage organs. Original.. 13 



FIG. 4. Storage organ of a cup-fungus with fruiting bodies. Original. 14 



FIG. 5. Strands of mycelial threads of the dry-rot fungus. Original.. 15 



FIG. 6. "Shoestring" strands of mycelial threads of the honey colored 



mushroom. ( )riginal 1 7 



FiG. /. Highly magnified view of section through the end of mycelial 



strand of the honey-colored mushroom. Alter Zopf iH 



FIG. 8. Fairy rings of a mushroom fungus. Photograph by Dr. F. 



Ramaley JO 



FIG. 9. Chief kinds of spores of fungi. Highly magnified. After vari- 

 ous authors 



FIG. 10. Various kinds 01 common fruiting bodies of fungi. Alter 



various authors -M 



FIG. n. Kinds of spores produced by one ru>t lungus (wheat rust ) at 



different times. Highly magnified. Alter various author*. -'5 



FIG. I-'. A carrion fungus. Original > 



FIG. i.v A birds-nest iungus. Alter Kngler and I'rantl. and Sachs. $0 



FIG. 14. Various explosive apparatuses ir distributing spores. Mag- 

 nified. Alter various authors... 



FIG. 15. A caterpillar-fungus spore, germinating. By the author.. 



FIG. 1 6. A dung-dwelling fungus oi the black mold group growing on 

 hor>e dung. Photograph \>\ F. K Butters 



