FUNGI. 23 



physes are mingled with the spores, or each spore-cluster may 

 have a special receptacle* (Genera aot given.) 



USTILAGINE^E. (Smuts.) Mycelium parasitic in the tis- 

 anes of the higher plants. This develops certain specialized 

 branches, which mostly become gelatinous and transform a por- 

 tion of their contents into spores. The mass of spores thus 

 formed bursts through the epidermis often as a soot-like powder. 

 11 era not given.) 



4 b. Mycelium mostly without partitions except at the 

 place of fruiting. 

 5 a. Sexual reproduction by ousjwres. 



SAPROLEGNIACE^J. Mostly aquatic and saprophytic 

 on decaying animals or plants. Non-sexual reproduction by zo- 

 ospores. 



PERONOSPORE2E. (Leaf-rots and mildews.) Parasitic 

 in the higher plants. Non-sexual reproduction by conidia, which 

 on germinating may produce zoospores. 



5 b. Sexual reproduction by zygospores. 



MUCORINI. (True moulds.) Saprophytic or parasitic on 

 other fungi. Non-sexual reproduction by conidia or clanrydo- 

 spores. Not aquatic. 



1 b. Plant-body consisting of a Plasmodium ichich in fruit- 

 ing becomes transformed into one or more sporangia 

 filled with spores usucdly intermingled with a capil- 

 litium, but not in any way connected with it. 



MYXOMYCETES. (Slime-moulds.) (Genera not given.) 

 1 c. Plant-body consisting of a single unbranched cell. Sev- 

 eral such cells may be joined together temporarily, 

 forming a colony. Reproduction entirely non-sexual. 



BACTERIACE^]. (Bacteria.) Multiplication by fission. 

 Causing putrefaction, fermentation, and other chemical changes. 

 (Genera not given.) 



SACCHAROMYCETES. (Yeasts.) Multiplication by 

 budding. Causing alcoholic fermentation. (Genera not given.) 



