Introduction 



HOW TO USE mi: KE1 



Th" method of using the keys for finding the 

 common flower as an --simple. If we choc 

 "Key to Families" on page ri. Here it is 

 <>r absent. Since petals and sepals are both clearlj pi 

 Under this heading it is then necessary to decide between "1 



I. Lbai Outlim 



1. Rounded. 2. Cordate (heart-shaped). 



6. Sagittate (arrow-shaped). 



3. 4. Krnifurni I kidncy->h.i; 

 Auriculate lean.! 8. Hastate halberd *hap«J 



"2. Flowers in heads." Examples of the latter are i I 



glory evidently falls under "1." The next choice is 



Since the morning glory has five petals grown int.) a funnel 



decision then rests between "(1) Petals separate" an 



between "(a)" Ovary superior, i. e., within the other parts," and 



the other parts." The ovary is found within the corolla tube 



II. Leak Outlines AND I'. I 



1 Linear. 2. Lanceolate (lance-shaped). 3. Oblong 



7. OblanciMl.itc 



ferior ovary is found at the bottom of the 



single flowers of dandelions, a 



in the ovary. This can be told readily from • 



of the ovary. If there are no cross walll, 



is divid Brat i 



one-celled," or "y. I 



