List of niustrations 



Page 

 F. D. Coburn • . , . ^Frontispiece 



A Typical Alfalfa Plant I 



Typical Stems and Foliage of the Alfalfa Plant i 

 Crown of Plant Shown in the Preceding Illus- 

 tration 6 



An Eight-year-old Alfalfa Plant .... 6 



Alfalfa Blossoms Enlarged •.•... 7 

 Intergrading Types of Seed Between Alfalfa 



and Sweet Clover 12 



Seeds of the Weed Known as Buckhorn , ♦ 13 

 Alfalfa Seeds Magnified Five Diameters , . 13 

 Sweet Clover-— Alfalfa — ^Yellow Trefoil . • 26 

 Three Distinctive Types of Alfalfa Seed Mag- 

 nified Twelve Times ..*•.. 27 



Yellow Trefoil Pods 32 



Alfalfa Seed Pods 32 



Bur Clover Seed Pods *..•... 33 



Sweet Clover Pods .....,.• 33 



Three General Types of Alfalfa Seed . • , 44 



Dodder Seed Magnified 45 



Alfalfa Seed Magnified 45 



Dodder Plant on an Alfalfa Stem .... 46 



Alfalfa and Dodder Seed. (Actual Size) . 47 



Dodder (Cuscufa avenis) 47 



Dodder {Cuscuta epithymum) .... 47 



