CLASSIFICATION OF PLANTS 155 



AN OUTLINE OF THE CLASSIFICATION OF PLANTS 

 DIVISION I. Thallophyta, the thallus plants, or thallophytes. 



SERIES OF THE ALG^E. 



CLASS I. Cyanophyceae, the blue-green algae. 

 II. Chlorophycece, the green algae. 



Order 1. Protococcales, the one-celled green algae. 



2. Confervales, the confervas and sea lettuce. 



3. Conjugates, the pond scums. 



4. Diatomales, the diatoms. 



5. Siphonales, the siphon algae. 



6. Charales, the stoneworts. 



III. PhdKOphyceae, the brown algae. 



IV. Rhodophycece, the red algae. 



SERIES OF THE FUNGI. 



CLASS V. Schizomycetes, the bacteria. 

 VI. Saccfiaromycetes, the yeasts. 

 VII. Phycomycetes, the alga-like fungi. 

 VIII. Ascomycetes, the sac fungi. 

 IX. Basidiomycetes, the basidia fungi. 



DIVISION II. Bryophyta, the liverworts and mosses, or bryophytes. 

 CLASS I. Hepaticce, the liverworts. 



Order 1. Ricciales, the Riccia forms. 



2. Marchantiales, the Marchantia forms. 



3. Jungermanniales, the Jungermannia forms, or 



leafy liverworts. 



4. Anthocerotales, the Anthoceros forms. 

 II. Musci, the mosses. 



Order 1. Sphagnales, the peat mosses. 

 2. Bryales, the common mosses. 



DIVISION III. Pteridophyta, the ferns and their allies, or pteridophytes. 

 CLASS I. Filicinece, the true ferns. 

 II. Equisetineos, the horsetails. 

 III. Lycopodinece, the club mosses. 



DIVISION IV. Spermatophyta, the seed plants, or spermatophytes. 

 SUBDIVISION I. Gymnospermae, the gymnosperms. 



II. Angiospermce, the angiosperms. 1 

 CLASS I. Monocotyledonece, the monocotyledons. 

 II. Dicotyledonece, the dicotyledons. 



1 The reader should note that in this classification the angiosperms con- 

 tain only two out of sixteen classes of somewhat equivalent value. 



