PART II 



TAXONOMY 



DIVISION I.— THALLOPHYTA 



Plants consisting of a thallus, a body undifferentiated into root, 

 stem or leaf. The group nearest to the beginning of the plant kingdom 

 presenting forms showing rudimentary structures which are modified 

 through division of labor, differentiation, etc., in higher groups. 



SUBDIVISION I.— MYXOMYCETES, OR SLIME MOLDS 



Terrestrial or aquatic organisms, frequently classified as belonging 

 to the animal kingdom and found commonly on decaying wood, leaves, 

 or humous soil in forests. Their vegetative body consists of a naked 

 mass of protoplasm called the Plasmodium which has a creeping and 

 rolling motion, putting out and retracting regions of its body called 

 pseudopodia. 



SUBDIVISION II.— SCHIZOPHYTA 



This group comprises the "fission plants" whose members possess 

 a common method of asexual reproduction whereby the cell cleaves or 

 splits into two parts, each of which then becomes a separate and 

 independent organism. 



I. Cyanophyce^ 



Plants which are sometimes termed blue-green algae. They contain 

 chlorophyll, a green pigment and phycocyanin, a blue pigment, a com- 

 bination giving a blue-green aspect to the plants of this group. Found 

 everywhere in fresh and salt water and also on damp logs, rocks, bark 

 of trees, stone walls, etc. Ex.: Oscillatoria, Gloeocapsa, and Nostoc. 



2. SCHIZOMYCETES — BACTERIA 



Bacteria are minute, unicellular vegetable organisms destitute of 

 chlorophyll. They serve as agents of decay and fermentation and are 



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