EXPLANATION OF TERMS. 

 I. 



Shrubs, as distinguished from trees, are those species 

 which, as a rule, do not spring from the ground with a 

 single branching trunk. 



II. 



THE FLOWER. 



(i) The flower, when complete, is composed of 

 petals Fig. a (i) ; sepals, Fig. a (2) ; stamens, Fig. b (i), 

 with filament, Fig. b (2), and anther, Fig. b (3) ; pistil, 

 Fig. b (4), with seed-case, Fig. b (5) ; style, Fig. b (6), 

 and stigma, Fig. b (7). 



V 7. Stigma 



These parts are supported by the receptacle, Fig. 

 b (8). The corolla (crown) is the circle of the petals ; 

 the calyx (cup) is the circle of the sepals. 



(2) The flower is pistillate, when the pistil is present 

 and the stamens are lacking ; staminate, when the sta- 

 mens are present and the pistil is lacking. 



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