1 86 PASTORAL AND AGRICULTURAL BOTANY 



Dried pods of honey locust, mesquite, Kentucky coffee tree, etc., may be "kept, and of 

 course bean, pea, broad bean, vetch, lentil, cowpea, clover and alfalfa seeds are always 

 available for class use, and may be grown in flats or pots in the laboratory greenhouse, 

 or window. If the work is undertaken in spring and summer, out-of-door species can 

 be had. 



LABORATORY EXERCISES 



i-. Study the morphology of the roots, stem, leaves and flowers of the sweet pea 

 and compare with the flowers of two other selected papilionaceous types. These may 

 be compared with alcoholic Cercis (C^ESALPINIOIDE^E) and Acacia (MIMOSOIDE^E) 

 Other members of the. family can be selected according to geographic location. 



2. Study the dried and swollen seeds of pea, bean, broad bean and clovers. Draw 

 and then identify the parts of the embryos. 



3. Scrape out some of the reserve food materials on a slide, examine the starch 

 grains and then stain with iodine solution. 



4. A study of the nodules has been reserved for a later chapter. 





