HAY AND FODDER. 



Fig. 3. Field Horsetail Equisetum arvense. 



a Ordinary, green, summer form, with whorls of simple branches. 

 6 Brown, spring iorm, bearing cones and attached to an under- 

 ground stem, with a food-tubercle. 



c A branch of the "bushy" type, with many secondary branches. 

 d Branch segments, with pointed teeth (leaves) at the tip, and 

 narrowed base, o, 6 and c about half, and d about twice 

 natural size. 



