98 CLASSIFICATION OF PLANTS. 



LESSON VI. 



CLASSIFICATION OF PLANTS. Natural and artificial Methods 

 Artificial System of JLinnceus The Natural Method oj 

 Jussieu. 



CKYPTO'GAMOUS PLANTS. Lichens, Fungi, Agarics, Tritffle, 

 Algce, Mosses, Ferns. 



PH ANKRO'G AMOUS PLANTS Monocotyledons Grasses Wheat, 

 Rye, Barley, Malt, Oafs, Rice, Maize, Sugar-cane, Sugar. 

 Sugar candy Palms Narcissus D icoty' ledons Apeta l- 

 ous D icoty' ledons Monopetalous Dicoty ledons Potatoe, To 

 bacco, Belladonna, Olive, Sage, Coffee Polypetaloas Dico- 

 ty' ledons Hemlock, Mallow, Cotton, Flax, Orange, Tea, Vine 

 Wine, Poppy, Sensitive Plant, Apple, Pear, Plum, Cherry, 

 Apricot, Peach, Strawberry, <SfC. Diclinece flop, Hemp, 

 Elm, Bread-fruit, Oak, Chestnut, Ash, Pine Qj the Uses of 

 Plants Examples of ornamental Plants. 



CLASSIFICATION OF PLANTS. 



1. As we stated when beginning the natural history of ani- 

 rnals, we give the name of classification to any arrangement 

 designed to facilitate the determining and study of objects, by 

 separating them into more or less numerous groups, which, in 

 their turn, are again divided and subdivided ; and by assigning to 

 each of these divisions a name and character suitable to enable 

 us to recognise all bodies of which they are composed. 



2. With this view we make use of two kinds of classifica- 

 tion ; one called an artificial system, and the other a natural 

 method. 



3. An ARTIFICIAL SYSTEM or classification of plants is a mode 

 of arrangement by means of which .ve may readily obtain a 

 knowledge of the name of a plan*, by examining the characters 

 furnished in the conformation of certain parts of these beings. 

 In this kind of classification we divide and subdivide the vege- 

 table kingdom into groups, into each one of which we range all 

 those plants which possess a certain character, selected arbitrarily, 

 and exclude all those that do not possess this same character, 

 without considering whether we separate in this way, plants that 

 resemble each other in all the most important relations, or 

 whether we bring together in the same division, other plants that 



1. What is meant by classification? 



2. By what modes are plants classified ? 



3. What is understood by the artificial method or system of classifica- 

 tion? 



