LESSONS WITH 'PLANTS 



323 



side the corolla are six knobbed stalks with yellow heads. 

 These are the stamens, and the knobs on the top are anthers. 

 The anthers are split open along the sides and a yellow 

 powder may be seen crumbling out. This powder is called 

 pollen and consists of minute grains. Bees like to eat it and 

 carry it away to their hives. In the centre of the flower is 



FIG 123. The Pasque Flower or Hairy Anemone. 

 (One of the very earliest.) 



still another structure, shaped like an angled cone, greenish 

 in color, and with three little projections on top. The whole 

 thing is called the pistil. The swollen lower part is the 

 ovary, and the slender projections on top are called stigmas. 

 The ovary contains the rudimentary seeds. If it is cut 

 across the middle the ovules or young seeds will be seen in 

 three cavities. These ovules will not develop into seeds 

 unless the pollen from this or some other trillium flower falls 

 upon the stigma of this pistil. Pollen is an essential thing 



