IRIS FAMILY 151 



In addition to the common species of Blue- 

 eyed Grass some botanists recognize two others : 

 namely, the Stout Blue-eyed Grass and the Eastern 

 Blue-eyed Grass. 



OBSERVATIONS FOR NOTEBOOK 



BLUE FLAG: 



(A) i. In what situations have you found the Blue 

 Flag growing? 



2. How early did the first blossoms appear? 



3. Are there any hairs upon the plant? 



4. Do you know of any aquatic plant that is 



provided with hairs? 



5. Can you suggest a reason for their absence? 



6. How does the structure of the pistil differ from 



that of most flowers? 



7. Of what advantage is it that the stigma is on 



the outside of the little flap hanging down 

 from the lobe of the style, instead of being 

 on the inside? 



8. How does the structure and position of the 



stigma and anther lead to cross-pollination 

 when bees visit the flowers? 



9. What insects have you seen visiting the flow- 



ers? 



10. Do butterflies get the nectar without coming 



in contact with either the stigma or the 

 anther ? 



11. Are there any nectar guides upon the petals? 



12. What sort of a fruit pod develops on the Blue 



Flag after the flowers go by? 



