NEW YORK STATE MUSEUM 



Lanceolate ; in which the leaf blade is three times as long as wide, or 

 longer, and broadest at or below the middle (figure 5). 



Oblong; in which the blade is somewhat longer than wide, broadest 

 in tlie middle or with sides almost parallel (figure 6 ) . 



Ovate; shaped like an egg; that is, broadest below the middle or near 

 the base (figure 7). 



Elliptical ; rounded at both ends, somewhat longer than wide ( figure 8 ) . 

 Orbicular or rotund; in which the blade is nearly or quite circular in 

 outline (figure 9). 



Reniform; in which the blade is 

 broader than long, with a heart-shaped 

 base (figure 10). 



Deltoid; triangle-shaped, similar 

 to ovate but conspicuously broadened 

 at the base and pointed at the apex 

 ( figure II). 



Consideration of a few leaf blades 

 shows immediately that these terms 

 are not always sufficient to express 

 accurately the shape and we may have 

 recourse to combinations of terms, such 

 as oblong-lanceolate, ovate-lanceolate 

 (figure 13), etc. 



The shape of leaf blades which are 

 broadest above the middle may be expressed by the following terms: 



Obovate; ovate in shape, but broadest near the apex or above the 

 middle (figure 14). 



Oblanceolate ; lanceolate in shape but broadest above the middle or 

 near the apex (figure 15). 



Spatulate ; in which the blade is oblanceolate or obovate in shape with 

 the base conspicuov;sly elongated (figure 12). 



