604 



APPENDIX A 



Fig. A. 5. Black bread mold, Rhizopus nigricans, an algalike fungus (phycomycete). The 

 mycelium (A), composed of much-branched filaments or hyphae, penetrates the substratum; 

 it sends up stouter hyphae (B) on which are borne the sporangia (C). One sporangium has 

 burst, shedding its spores. (From Sinnott, Botany, 4th ed.) 



Fig. A. 6. Sac fungi (ascomycetes). Upper left, the bird's-nest fungus, Cyathus striatus; the 

 others are disk fungi. Upper right, Omhrophila enterochroma; lower left, Peziza badia; lower 

 right, Bulgaria rufa. (Photos by Prof. E. B. Mains.) 



