STUDY OF COMMON PLANTS. 



I. SEEDS. 1 



MATERIAL REQUIRED. 



Common white beans. Other varieties, such as " butter beans," etc. 



Peas, oats, wheat, Indian corn, several varieties of the latter. 



Castor oil seeds. 



Seeds of white pine, Norway spruce, and other conifers. 



Commercial " nuts," such as chestnut, peanut, filbert, almond, Brazil 



nut, and English walnut. 

 Seeds of coffee, date, flax, sunflower, tomato. 

 As many kinds as possible of seeds*with winged or hooked appendages 



or other special arrangements for dissemination. 

 Seeds of squash, pumpkin, watermelon, muskmelon, cucumber, gourd, 



and similar collections from other important families. 



COMMON BEAN. Phaseolus vulgaris, Savi. 



I. Compare a number of white beans, and see if they are 

 all alike. Select a good specimen. Observe and describe 



1. The shape, surface, and color. 



2. Surface markings : 



a. The scar, hilum, 2 marking the place where the 

 seed was attached. 



1 General references: Gray, Structural . Botany , pp. 305-314; Stras- 

 burger, Practical Botany, Chaps. I and II ; Sachs, Physiology of Plants; 

 Haberlandt, Physiologische Pfl,anzenanatomie, pp. 277-293. 



2 If any of the terms are unfamiliar and are not sufficiently explained 

 in the text, consult Webster's International Dictionary. 



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