CLASSIFICATION OF CEYPTOGAMS. ] 89 



the Thalamifloral, Calycifloral, and Corollifloral divisions of De Candolle. 

 Perigynre : perianth tubular below, bearing the stamens, and free from 

 or adherent to the carpels, In this group the Calycifloraa have a single 

 perianth, the Corolliflorae a calyx and corolla. 



Classification of Cryptogams. This is in a transitional state. 

 The following is the latest arrangement, adopted by Sachs. It 

 will be seen that the orders are arranged in two parallel series, 

 according to the presence or absence of chlorophyll. 



Group I. Thallophyta. 

 Class 1. Protophyta. 



With chlorophyll. Without chlorophyll. 



CyaiiophycefB. Schizomycetes. 



Chroococcacea3. Sphrerobacteria. 



Oscillatoriese. ]\1 icrobacteria. 



Scytonemeae. Desmobacteiia. 



Nostocaceae. Spirobacteria. 



Rivulariaceae. 



Talmellacece. - 



Euglenea. Saccharomyces. 



Class 2. Zygosporeae. 

 A. Conjugating cells motile. 



Volvocinefp, Myxomycetes. 



\_Hyd rodictyea. ] 



Confervacece. 

 Ulvacece. 



B. Conjugating cells stationary. 

 Conjuf/at(p. Zyyomycetes. 



Desmidieae. Mucorini. 



Diatomaceae. Piptocephalidae. 



Mesocarpea3. 

 ZygneuiesB, 



Class 3. Oosporese. 

 Spli(crop 7 ea. 



CccloUastce. 



Fucacece. 



\ L Ph(cosporecB.'] 



