682 



FAMILIES OF ANG1OSPERMS, 



number of the parts or members of the flower. What parts of the flower 

 are present? 



Make a long section of the flower and sketch showing the parts and 

 their relation to each other 



Fig. 570. 

 Flower of pear. (After Warming.) 



Determine the number of members in each set; the relation of the mem- 

 bers of a set to each other; the relation of the sets among themselves. 

 Give the names which are applied to these relations. 



The fruit. What parts of the flower are united in the fruit? Make 

 longitudinal and cross sections of an apple, name the parts and show 

 from which part of the flower each part of the fruit comes. What is the 

 fruit of an apple-tree called? 



Material. Spray of leaves and flowers; mature fruit. 



1174. Lesson XIV. The pea family (Papilionaceae). This 

 family is well represented by the common pea. The flower is 



Fig. 571- 



Details of pea flower ; section of flower, perianth removed to show the diadelphous 

 stamens, one single one, and nine in the other group. (From Warming.) 



butterfly-like or papilionaceous, and the showy part is made up 

 of the five petals. The petals have received distinct names 



