96, 97.] 



MORPHOLOGY OF THE LEAF. 



113 



relation to each other and to the midvein. When the 

 lower veinlets are longer than the others, the form of 

 the blade will be (1) ovate, with the outline of an egg, 

 the broad end at the base ; (2) lanceolate, or lance- 

 shaped, narrower than ovate, tapering gradually up- 

 ward ; (3) deltoid, or triangular-shaped, like the Greek 

 letter A. 



314 



Forms of leaves. 311, Rhododendron maximum. 312, Alnus glutinosa (cult). 313, Polygonum dum- 

 etorum. 314, Papaw. 315, Impatiens fulva. 316, Celtis Americana. 317, Circaea Lutetiana. 318, Cat- 

 mint. 319, Solidago Canadensis a tripli-veined leaf. 



289. If the middle veinlets exceed the others in 

 length, the leaf will be (4) orbicular, roundish, or quite 

 circular ; (5) elliptical, with the outline of an ellipse, 

 nearly twice longer than broad ; (6) oval, broadly 

 elliptical ; (7) oblong, narrowly elliptical. 



290. When the veinlets are more largely developed 

 in the upper region of the leaf, its form becomes (8) 

 obovate, inversely ovate, the narrow end at base ; (9) 

 oblanceolate, that is, lanceolate with the narrow end at 

 base ; (10) spatulate, like a spatula, with a narrow base 

 and a broader, rounded apex; (11) cuneate or cunei- 

 form, shaped like a wedge with the point backward. 



