CLASSIFICATION". 123 



axis of the fruit; (43) centrifugal, when turned toward 

 the sides ; and vague, when it bears no uniform relation to 

 the pericarp. 



CHAPTER II. 

 Classification, 



Ik classification we commence at the concrete and de- 

 scend to the individual. Placing all vegetable life in a 

 KINGDOM, this is divided into two grades or series, the 

 Phcenogamous or flowering plants, and Cryptogamoiis or 

 flowerless plants. The first (Phaenogamons) is further 

 subdivided, according to their manner of growth, into 

 CLASSES — outside growers, inside growers, and growing 

 at the apex of the plant; termed in botany. Exogenous, 

 Endogenous, and Acrogenous, 



Exogens are further divided into sub-classes: Anglo- 

 sperms (seeds covered) and Gymnosperms (seeds naked). 

 Also into divisions: Polypetalous, Monopetalous, and 

 A2ietalous. 



Endogens are distinguished into Spadiceous and Gluma- 

 ceous. 



These are all further divided into orders, based upon 

 the greatest number of general resemblances. Orders are 

 subdivided into tribes, grouped together upon more par- 

 ticular relationship. Those with closer resemblances into 

 gen'era ; and the differences in color, form of leaves, etc., 

 etc., divide the genus into species. 



