PLANT GROUPS: EXOGENS AND ENDOGENS. 



9 



To Group I., with the netted veins, bel-ong most of our garden plants, that is to say, 

 nearly all our fruit-trees (except the musa, or banana), and nearly all the vegetables. 



To Section II. of Division I., or Endogens, belong, on the other hand, all our 

 true bulbous plants — the banana; all tlowers such as iris, crocus, lily, amaryllis ; all 

 orchids and palms, and all such vegetables as leeks, onions and asparagus. 



Then to the main Group IL, or the Flowerless Plants, on the other hand, belong, as 

 we have said, all the ferns, lycopods, or selaginellas, and the great foniily of fungi. 



Fig. 1. Phanerogams. 

 A. — Group I., netted veins. i i'.— Group II., straight veins. 



Exogens = Dicotyledons. | Endogens = Monocotyledons. 



. ■■ ■ ■ ' (After Goethe's f^rjj/i?((//-o(.) 



or mushrooms. Bearing the above simple facts in mind, a child need have no 

 great difficulty in referring all garden plants to the divisions to Avliich they naturally 

 belong. 



Division II. — Flowekless Plants, or Cryptogamia. 

 It is thought by some botanists that this division represents the earliest (»f all 

 vegetation on the earth. They are all more or less fond of damp shady places ; 

 VOL. I. e 



