78 THE NATUBE AND WORK OF PLANTS 



in the method of action. Perhaps those most easily 

 found and examined are the traps of the pitcher 

 plant (Sarracenia) and bladderwort {Utriciilaria). 

 The pitcher plant is a member of a family that 

 extends around the globe, and the pitchers of the 

 different members of the family are unlike ; the com- 

 mon pitcher plant, or Sarracenia, is found growing 

 in bogs and swamps over a large part of the United 

 States. A search should be made for them in such 

 places, and fine specimens may be found near tama- 

 rac swamps. They may be easily distinguished by 

 the urn-shaped leaves. When found, note the man- 

 ner in which these leaves arise in clusters from a 

 short underground stem. Note the general form 

 and color of the organs. Beside the green, vari- 

 ous markings of red and purple are to be seen. 

 Note the following regions of the leaf : the 2^etiole, 

 the ^;z7cAer, or urn-sliaped part, and the hood, or lij), 

 at the upper outer edge. Split a leaf from top to 

 bottom, noting the shape of the cavity and the con- 

 tents. What kinds of animals do you find inside ? 

 Next make an attempt to determine the manner 

 in which they were enticed or entrapped in the 

 pitcher. Examine the upper and outer edge of the 

 pitcher for honey. Inside and near the top of 



