OUR NATIVE TREES AND SHRUBS. 11 



VIII. OUTLINE OR SHAPE OF BLADE. 



Oval : Egg-shaped, length about twice width, ends nearly equaL 



(See p. 30 71a, 69b.) 

 Ovate : Similar to last, but narrower toward apex. (See p. 18 



34e, 4 la.) 

 Obovate : Similar, but narrower toward base ; like the last turned 



around. (See p. 34 24d, 28c, 13a.) 

 Lanceolate : Long and narrow, broader toward base. (See p. 32 



76a, 76b:) 

 Oblanceolate : Long, narrow, broader toward apex, like the last 



turned around. (See p. 32 76g, 67a.) 

 Cordate: Heart-shaped. (Seep. 30 lOa ; p. 20 37a.) 

 Oblong : Length about three times width, and edges nearly 



straight (See p. 24 Ha.) 

 Elliptical : Similar to last, but sides more rounded, and narrower 



towards each end. (See p. 24 49a.) 

 Awl-shaped : Small and sessile, and pointed. (See p. 36 84a, 



84c.) 

 Linear : Long and narrow, with nearly straight edges, like a blade 



of grass. (See p. 36 81a; p. 32 76d.) 

 Needle-shaped : Long and slender, like those of Pine and Spruce. 



(See p. 36 78a, 78b, 78c, 78d.) 

 Such leaves are often called needles; they may be somewhat 



square, or three-sided, or four-sided, or half-round, or com- 

 pletely round. 

 The combination of two terms means that the form is between 



them ; e.g., round-ovate, linear-lanceolate. 



IX. THE ENDS OF THE BLADE. (Base and Apex). 



Acute : Forming a rather sharp angle, pointed. (See p. 22 48a, 



76g, 76i.) 

 Obtuse : Forming a rather wide angle, somewhat blunt. (See p. 



22 45a, 46a, 43j.) 

 Tapering or taper-pointed : Curving out to a point. (See p. 34 



24c, 24d, 24e.) 



Abrupt : Suddenly forming a point. (See p. 34 28c, 13a.) 

 Mucronate : With very fine and short abrupt point. (See p. 24 



Ha, 42a.) 



