GENERAL MORPHOLOGY. 



Fig. 13. 



Fig 12 



/ 



C-.=«65g_E5-"; 



Fig. 12. The Male Fern {Lastrcea Filix-inas). Fig. 13. A Tree-fern show- 

 ing a tuft of leaves or fronds at the aper of a cylindrical stem, which is 

 enlarged at its base, ra, by the development of a mass of adventitious 

 roots. 



bodies known as wood-cells and vessels, except in a very few in- 

 stances. These, therefore, are frequently known asCellular Plants, 

 in order to distin^ish them from all other plants placed above 

 them, which from being generally furnished with both wood-cells 



