310 L1NN.T:AN ORDliRS. 



cordant, in every point, from the compound syngene^ 

 sious flowers. 



The Orders of the 20th, 21st and 22d Classes are 

 distinguished by the characters of some of the Classes 

 themselves which precede them, that is, almost entirely 

 by the number of their Stamens; for the union of the 

 anthers in some of them is, for the reasons just given, of 

 no moment. 



The Orders of the 23d Class, Polygamia, are, accord- 

 ing to the beautiful uniformity of plan which runs 

 through this ingenious system, distinguished upon the 

 principles of the Classes immediately preceding. 



1. Monde CI A has flowers with Stamens and Pistils on 

 the same plant with others that have only Pistils, or 

 only Stamens ; or perhaps all these three kinds of 

 blossoms occur ; but whatever the different kinds 

 may be, they are confined to one plant. 



2. Dice CIA has the two or three kinds of flowers on 

 two separate plants. 



3. Trioecia has them on three separate plants, of 

 which the Fig is the only real example, and in that 

 the structure of the flowers is alike in all. 



The Orders of the 24th Class, Cryptogamia, are pro- 

 fessedly natural. They are 4 in Linnaeus, but we now 

 reckon 5. 

 1. FiLicES. Ferns, whose fauctification is obscure, 



and grows either on the back, summit, or near the 



base of the leaf, thence denominated a frond. See p. 



117. 



