GENERAL MORPHOLOGY OF THE PLANT 73 



it is prcemurse, as in the leaf of Ccvryota urens. When the apex 

 IS sharp, so that the two margins form an acute angle with 

 each other (figs. 132 and 139) , it is acute or sharp-powited ; when 

 the point is very long, and tapering {fig. 137), it is acuminate or 

 taper-pointed, as in the leaf of the White Willow and common 



Fig. 131. 



Fig. 132. 



Fig. 133. Fig. 134. 



Fig. 137. 



Fig. 138. 



Fig. 139. Fig. 110. 



Fi^f. 131. Leaf of Elm. with its margins bisen-ate, aud the lamina unequal at 



its base. Fig. 132. Unequal or oblique leaf of a species of Beqonia, — 



Fig. 133, Linear leaf of Goose-grass {Galium Apai-ine). Fig. 134. Lanceo- 

 late leaf. Fig. 135. Acerose or needle-shaped leaves of Juniper (Juni- 



pervs communis). Fig. 136. A cuneate aud mucronate-pointedleaf. 



Fig. 137. Cordate and acuminate leaf, with its margins dentate. Fig. 



138. Oblong leaf of Bladder-Senna (t7oZw/cfl«/-6oresce«s). Fig. 139. Ovate 



leaf, with its margins sen'ate. Fig. 140. Obovate leaf. 



Keed ; when it tapers gradually into a rigid point, it is cuspi- 

 date, as in many Eabi. When the apex, which is then com- 

 monly rounded, has a short hard or softened point standing on 

 it it is mucronate (fig. 136), as in the leaf of Statice mucronata 

 and Lathyrus pratensis. 



4. General Outline or Figure.— By the general outline or 



