180 



THE LEAF 



A circular leaf (Fig. 493) is called Rotund or Orbicular. 



Finally, we have the leaf which is broader than circular — that is, its 

 lateral diameter is greater than its vertical, and this is called Trans- 

 versely Elliptical. 





497 



Leaf outlines: Fig. 486. Obovate compound leaf of rose. 478. Linear leaf of I/ireon'a. 488. Oblong- 

 elliptical {Poterium). 489. Oval elliptical {Pyrola). 490. Imperfectly oval {Prunus). 491. Filiform 

 (Drosera). 492. Acerose (Pinus). 493. Rotund (Pyrola). 494. Ovate {ColUnsonia). 495. Reniform 

 (Asarum). 496. Lanceolate {Solidago). 497. Lancelinear (Salix). 



Forms Broadest below the Middle.— Those which are broadest at some 

 point below the middle or above the middle should, in description, 

 besides being designated by the class-name of their form, have it 

 specified in some way as to about the portion at which the greatest 

 breadth occurs. 



Beginning with the broadest ones, we have that which is broader than 

 long and with a heart-shaped base, called Reniform (Fig. 495). 



One which possesses a length greater, but not more than two or three 

 times its breadth, is called Ovate (Fig. 494). 



One of similar form, but its comparative length greater, is called 



