FOR WAGGONER’S BIOLOGY 
87 
III. When was the lilac bud formed? Did all the buds develop 
in the same way? How do those branches which bear flower 
clusters differ from those which do not? 
IV. Near the end of the term, write an account of the lilac bud’s 
development based upon the notes of these observations. Use 
your sketches as illustrations. 
II 
THE DEVELOPMENT OF THE FLOWERS AND 
FRUITS OF THE DANDELION 
I. What is the appearance of the dandelion plant when viewed 
from above? Of what value to the plant is this rosette ” ar¬ 
rangement? Note the character of the stem. What is the ad¬ 
vantage of this to the plant? What is the character of the roots? 
What is the fleshy ” material present in them? Explain its use. 
Why is this plant hard to kill out? 
II. Select a plant and study as follows for ten days or more: 
Observe the plant several times each day. Where do the buds 
arise? What are the color, size, and shape of the young buds? 
Note the length of the flower stem at first; also the green bracts 
that surround and cover the bud. What is the position of these 
bracts in the young bud? 
III. Mark a bud and observe it from day to day. Note what 
takes place with reference to: 
1. The successive position of the bracts. 
2. The lengthening of the flower stem. 
3. The effect of sunshiny and dark days upon the opening of the 
flower heads. Does a single head open more than once? 
IV. Examine mature seed clusters. How are the seeds scat¬ 
tered? What is their position while suspended in the air? Expkin 
this. Where did the ‘‘ parachute ” develop? Open a head which 
is in full flower and find the downy portions of the parachutes.” 
Next, open a head that has recently blossomed. How is the 
