LABORATORY MANUAL OF HORTICULTURE 



least four inches in length. Measure the distance between the 

 internodes and count the number of buds in a cycle. Describe 

 the color of the bark. Are the lenticels numerous or few? 

 Describe. 



6. Draw a longitudinal and a cross section of both a flower bud 

 and a branch bud. Describe the differences. How many ovules 

 do you find in a bud ? Is the number constant or variable ? 

 Discuss. Does the fruit bud differ from the branch bud in posi- 

 tion on the stem ? Discuss. 



c. Make a drawing, at least one inch in length, of a branch bud 

 and a flower bud. Remove several of the bud scales, and make 

 a drawing of a scale from both the branch bud and the flower 

 bud. Are there any differences ? If so, describe. 



2. Prunus triflora includes the following varieties: Ogon, 

 Occident, Red June, Willard, Abundance, and several others. 



a. Secure branches from one or more of the varieties named 

 or others of the Prunus triflora that are available. Make a 

 natural-size drawing of a branch four inches, in length, showing 

 the number and the position of the buds. Count from external 

 appearance the number of fruit buds and branch buds. Measure 

 the distance between the buds, and count the number in a cycle. 

 Is the number constant ? Discuss. 



b. Make a drawing of a longitudinal and a cross section of 

 both a branch bud and a flower bud. This drawing should show 

 detail and be at least one inch in length. How many ovules do 

 you find in the flower bud. Label all parts. Describe. 



c. After a branch bud and a flower bud have been definitely 

 determined, make a drawing showing each bud enlarged to one 

 inch. What internal and external differences do you note ? 

 How can you distinguish the flower bud from the branch bud 

 by external appearance? 



d. Describe fully the difference between these buds and those 

 of the Prunus domestica and the Prunus triflora in gross appear- 

 ance, in size, in location and arrangement, and in any other points 

 noted by you. 



3. Prunus americana includes the following varieties: Hawk- 

 eye, De Soto, Weaver, Wood, Wyant, and some others. 



a. Secure branches from one of the above varieties, including 

 both fruit buds and branch buds, and make a drawing, natural 

 size, and four inches in length. Note the color of the bark and 



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