162 Key to the System, of 



779. Annual. 



Leaves greyish-green, elliptical- or cuneate-obovate, in two 

 rows turning away from the flowers towards one side ; 

 flowers minute, on very short stalklets ; fruit small, 

 turgidly trilobed ; seeds streaked, blackish. 



P. lacunarius. 



Shrubby. 



Tall shrub ; leaves rather large, from obovate- to obcordate- 

 orbicular, membranous, in two rows turning away from 

 the flowers towards one side ; flowers minute, usually a 

 few together in the axils, on conspicuous stalklets ; fruit 

 small, brownish. P. Gunnii. 



CUPULIFERAE. 



FAGUS. 



780. Leaves small, flat, crenulated, mostly glabrous ; their 



lateral venules faint. 



A very large evergreen tree, with widely spreading branches; 

 leaves firm, from ovate- to orbicular- or deltoid-rhomboid; 

 involucral bracts fringed ; staminate flowers mostly soli- 

 tary ; stamens several ; fruit-bearing calyces minutely 

 lobed at the summit; fruits oftener triangular than 

 biangular. F. Cunningham!. 



URTICACEAE. 



TRBZKA. 



781. Leaves from cordate- to ovate-lanceolar, much nar- 



rowed into the apex. 



From a tall shrub to a good-sized tree ; leaves somewhat 

 brittle, slightly serrulated ; flowers in short cymes ; fruit 

 small, from ovate to nearly roundish. Figure 24. 



T. cannabina. 



FICTTS. 



782. Fruit-bearing receptacles small, short-stalked, almost 



globular. 



A tree, from small to rather large, hardly evergreen ; leaves 

 somewhat brittle, on short stalklets, from cordate- to 

 elliptical-ovate, accumulate, rather oblique, rough ; fruit- 

 bearing receptacles solitary or two together, sometimes 

 verging into an ovate or urceolar form. F. scabra. 



