128 INSERTION OF LEAVES. 



stem-leaves, expresses their shape only, as being 

 vertically flattened, in opposition to compressa. 



Natantia, floating, on the surface of the water, as 

 Nymphcea lutea, t. 159, and alba, t. 160, (47) and 

 Potamogeton natans, (48) and many water plants. 



De?nersa, immersa, or siibmersa, plunged under wa- 

 ter, as Potamogeton perfoliatum, t, 168, Hottonia 

 palustris, (49) t. 364, Lobelia Dortmanna, t. 140, 

 and the lower leaves di Ranunculus aquatilis^ t. 101, 

 while its upper are folia natantia. 



Emersa, raised above the water, as the upper leaves, 

 accompanying the flowers, of Myriophyllum verti- 

 cilatum, t. 218, (50) while its lower ones are de- 

 mersa. 



2. By Insertion is meant the mode in which one part 

 of a plant is connected with another. 



Folia petiolata, leaves on footstalks, are such as are 

 furnished with that organ, whether long or short, 

 simple or compound, as Ferbaseum 7iigrmn, Engl. 

 Bat. t. 59, Thalictrum inifius, ?. 11, alpinum^ t. 

 262, &c. 



Peltata, /^ 31, peltate, when the footstalk is inserted 

 into the middle of the leaf, like the arm of a man 

 holding a shield, as in the Common Nasturtium, 

 Tropcsolum majus^ Curt. Mag. t. 23, Drosera pel- 



(47) [So the American Water Lilies, Al/?«/j A <ea advena and od- 

 •ra^o.l (48) [Ponchveed.] 



(49) [Water Feather, or Water Violet. Native, as also the 

 next.] 



(50) [Whorled Water Milfoil.] 



