THE LEAF. 



II 



Hastate 



Sagittate 



Lanceolate 



Subulate-- 

 Cordate 



Reniform 



Ovate 



FIG. 43 A. 



FIG. 43 B. 



Obcordate 



Obovate- 



Oblanceolate 



Spatulate 



FIG. 43 c. 



The outline shown 

 in Fig. 39 represents 

 a hastate or halberd- 

 shaped leaf, with its 

 horizontally extend- 

 ing basal lobes. In 

 Fig. 40 these lobes are 

 seen separated from 

 the blade. This is an 

 auriculate or hastate- 

 aurided leaf. The 

 form shown in Fig. 

 41 is orbicular. It is 

 also spoken of as a 

 peltate leaf, because 

 the petiole is inserted 

 on the lower face of 

 the blade, instead of 

 at the base. Fig. 42 

 represents a rounded 

 or sub-rotund leaf. A 

 further help in determining the figure of leaves will be 

 found by comparing them with the outlines shown in the 

 above diagrams, Figs. 43 A, 43 B, 43 c, 43 D. 



When none of the terms given correctly describe a leaf, 



Acicular 



Linear 



Oblong 

 Oval 



Elliptical 



Rotundate - 



Orbicular 



FIG. 43 D. 



