DICLINOUS FLO WEBS, CONTINUED 



163 



183a. Thus, the stem of the hepatiea (Fig, 131) is a peduncle; 

 the main stem of the so-called flower of the dogwood (Fig. 154) is 



Fig. 163. 

 Diclinous flowers of the cucumber. 



a peduncle, and the real flowers are sessile; the staminate catkins 

 of the hickory (Fig. 160) are upon very short pedicels, three catkins 

 springing from one peduncle. 



Suggestions. — Let the pupil determine whether the poplars, cot- 

 tonwoods and willows which he passes on the streets are staminate 

 or pistillate, and if there is any difference in habit between the 

 sexes. Of the weeping willow and Lombardy poplar (which are 

 foreign trees), only one sex has been introduced into this country. 

 Which one is it? Why do strawberry -growers plant different varie- 

 ties together? 



XXX. DICLINOUS FLOWERS, CONTINUED 



184. The squashes and pumpkins send up yel- 

 low, bell-like flowers on long, slender stalks all 

 during the summer months, but these flowers soon 



