CONSPECTUS OF THE NATURAL SYSTEM. 85 



stance, in the character of Ranunculus what is termed 

 seeds are in reality seed-vessels, each containing a seed. 

 (See Fruit.) 



By studying the ahove he will soon become familiar 

 with the principles of the Linnsean system and gain a 

 considerable knowledge of the structure of flowers, which 

 will greatly aid him in the study of plants under their 

 natural families. 



CONSPECTUS OF THE NATUEAL SYSTEM. 



Division L — CRYPTOGAMS. Floiverless plants^ 

 organs of reproduction hidden, being invisible to the 

 naked eye. 



Class I. — Thallogens. Ex. Fungi, algse (sea- 

 weed), lichens (fig. 10). 



Class II. — Acrogens. Ex. Mosses, club mosses, 

 ferns (fig. 11). 

 Division II. — PH-^WOGAMS. Flowering plants, 

 with visible stamens and pistils. 



Class III. — Endogens. Ex. Grasses, palms, 

 bananas, lilies (fig. 12). 



Class IV. — Gymnogens. Ex. The cycad, fir and 

 yew families (fig. 13). 



Class V. — Bhizogens. Ex, Eafilesia and balano- 

 phora. 



Class VI. — Exogens. All trees, shrubs and herbs 

 with net- veined leaves (fig. 14). 

 It has been shown that several of the Linnsean classes 

 are what is termed natural, yet the greater number con- 

 sist of plants difi'ering widely in character and appear- 



