322 NATURE-STUDY 



growing in rich moist woods. Pull the plants up by the 

 roots and observe that they spring from a rounded, bud- 

 like rootstalk. This was formed last summer and filled 

 with a store of food that the plant might make an early start 

 in the spring. There are three large leaves in a circle around 

 the stem just below the flower. These will have to make 

 the starch with which next year's rootstalk is to be filled. 



FIG. 122. Wake Robin or Dwarf Trillium. 



Look at the flower. On the under side and surrounding 

 it are three green, leaf-like parts. These are the sepals. 

 Taken together they are called the calyx, which means cup. 

 This cup-like appearance of the calyx is seen better in some 

 other flowers, as, for example, in the morning-glory. Next 

 within are three white parts, shaped like the sepals. These 

 are called the petals, and all together they form the corolla, 

 meaning crown. The corolla is more crown-like and golden 

 in some other flowers, as, for example, the buttercup. In- 



