APPENDIX TO PART 1 



CLASSIFICATION OF PLANTS 



224. Branch I. Thallophytes. — To this division of plants 

 belong all of the lowest eleven classes. No single positive 

 character is common to all. The plant body is never differ- 

 entiated into true roots, stems and leaves. Classes 3-8 con- 

 tain chlorophyll and are called algae. Classes 9-1 1 are devoid 

 of chlorophyll and are called fungi. 



Fig. 57. — A slime mold creeping over dead grass. X r. 



225. Class I. Myxomycetes. — This group is sometimes 

 classed with animals under the name mycetozoa. 11ie organism 

 is saprophytic and is found creeping about on moist organic 

 matter, as on the vegetable mold under trees. In the active 

 condition a slime-mold plasmodium might be likened to a 

 gigantic amoeba, often several inches in diameter, with numer- 



lOI 



