SECTION XI. FIELD WORK (DICOTYLEDONS) 



A. TREES AND SHRUBS 

 A METHOD OF RECORDING FIELD OBSERVATIONS 



In the following outline for the study of trees in the field 

 the same general plan is followed as in the description of typi- 

 cal species of willows, oaks, and maples in the text. 



The directions should usually be followed for the study of 

 one typical species in each family until the student is familiar 

 with the methods employed in such work. Additional species 

 should then be worked out by the students independently. 



A convenient form for recording field observations and labo- 

 ratory studies on trees and shrubs is submitted below in the 

 form of what are termed Species Eecord and Family Record. 

 If this plan is adopted, the record of the initial species studied 

 in each family should be entered, as indicated in the outline, 

 by checking, in the blank spaces following the terms employed, 

 each term, or character, that applies to the species being 

 studied. Outline sketches should also be made after such a 

 plan as that indicated under Figs. 10, 11, and 12, pages 20~23, 

 of text. See also the figure of the Carolina poplar (Populus 

 deUoides) (Fig. 26). 



It is convenient for class use to have the Species Record 

 (p. 156) and the outline for Figures (p. 157) printed on two 

 sides of a single field sheet. These field sheets can then be given 

 to each member of the class for recording the results of field 

 and laboratory work. The Family Record (p. 158) can be used 

 in a similar manner, the outline for several species being printed 

 on one sheet with the familv characteristics at the end. 



