u 



Class XXII. includes those plants where the flow- 

 ers that bear the Stamina grow on separate plants 

 from those that produce the seed., as in the date-bear- 

 ing Palm already mentioned. 



Class XXIII. comprehends those plants the Sta- 

 mina of which grow sometimes on separate plants, 

 sometimes in separate flowers on the same plant, and 

 sometimes in the same flower with the Pistilla. 



Class XXIV. includes Ferns, Mosses, Liverworts^ 

 Flags, and various kinds of sea -weeds, and Fungi, 



The Linncean Names of these Classes are, 



I. Monandria. XIII. Polyandria. 



IT. Diandria. XIV. Didynamia. 



III. Triandria. XV. Tetradynamia, 



IV. Tetrandria. XVI. Monadelphia. 

 V. Pentandria. XVII. Diadelphia. 



VI. Hexandria. XVIII. Polyadelphia, 

 VII. Heptandria. XIX. Syngenesia. 



VIII. Octandria. XX. Gynandria. 



IX. Enneandria. XXI. Monoecia. 



X. Decandria. XXII. Dioecia. 



XI. Dodecandrku XX II I. Polygamia, 



XII. Icosandria. XXIV. Cryptogamid. 



Besides these divisions, Linnaeus made a secondary 

 artificial arrangement or subdivision of these Classes 

 into Orders. 



The Orders of this first thirteen Classes are esta- 

 blished upon the number of the Pistilla or Stigmata., 



