144 CYNTHIA DANDELION. THE DANDELION CYNTHIA. 



the decrease in growth force. When this great rhythmic wave 

 is nearly exhausted, a new current starts again to form the parts 

 of the flower, and we may reasonably look for the same form of 

 modified leaves (petals) in the first start of this new wave growth, 

 as we found in the first start in growth of the wave which formed 

 the flower-stalk. 



Explanations of the Plate. — i. Branching stem. 2. Flower stem with head showing the 

 expanding invohicre in fiuit. 3. Achene with double pappus, the outer short and scale-like 

 at the base of the long hair. 4. Root (slightly tuberous) with root leaves. 5. Flower, with 

 all the florets strap-shaped, the interior not yet expanded. 6. Faded flower showing the 

 conical involucre. 7. Enlarged somewhat amplexicaul b;ise of the stem-leaf. 



