FORMS niiOADEST ABOVE THE MIDDLE 



ISl 



Lanceolate (Fig. 496). One wliich is ovate, but with the greatest 

 l)rea(ltli at the very base, the margins not or ])ut httle curved, so that 

 it is approximately triangular, is called ])clt()i(l (Fig. 498). 



One still narrower, but of similar form, Ijcaring the same relation to 

 the lance()l;it(> wliich the deltoid does to the ovate, is called Subulate, 

 or awl-shai)ed (Fig. 499). 



An ovate or oval leaf whose outline, instead of being regularly curxed, 

 is made uj) of four comi)aratively straight hues is called Traj)e/.oidal or 

 Angularly-ovate. Another term which is appHed to it is Khomboidal 

 (Fig. :)()()). 



Leaf outlines: Fig. 498. Deltoid {Betula). 499. Subulate (diagrammatical). 500. Rhomboidal 

 {Chekan). 501. Obovate (Lindera). 502. Oblanceolate {SoHdago). 503. Spatulate (Antennaria). 

 504. Talcsitc (Eucalyptus). 505. Inaequilatcral (//amamcZis). 



Forms Broadest above the Middle. — ]\Iost of the forms just referred to 

 are i)aralleled by exactly similar forms in which the widest portion is 

 above the middle. The names for these are formed by ])refixing the 

 syllable oh to the corresponding names of the other forms; as, Obovate 

 (Fig. 501), Oblanceolate (Fig. 502). 



When an. Obovate or Oblanceolate leaf possesses a broad, rounded 

 ai)ex, and a somewhat elongated lower portion, it is called Spatulate 

 (Fig. 50;^). 



The outline of a leaf is greatly modified when the jxtrtioii U])on one 

 side of the midrib is longer or broader than that upon the other, giving 

 us Inequilateral, I'nequal, or Oblique forms (Fig. 505). 



