LEGUMINOSM. 



269 



How does seed distribution come about in such plants as the strawberry? 

 How are strawberry plants usually propagated ? 



Materials. — Entire plants with runners : flowers ; fruit. 



Exercise 77. 



431. The apple (Pyras malus). 



Leaves. — Determine the arrangement of the leaves on the shoot ; sketch a 

 leaf. 



The inflorescence. — Determine the kind of inflorescence. 



The flower. — Study several flowers to compare the variation in the 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. 



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

 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 ? 



Materials. — Spray of leaves and flowers ; mature fruit. 



Order LEGUMiNosyE. 



432. Lesson XIV. The pea family (papilionacese). — This 

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

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



Fig. 231. 

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

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



