338 
FERNS AND THEIR ALLIES 
leaves. In appearance these plants are more like mosses 
than ferns (Figures 312 and 313). 
Horsetail, or equisetum, grows in waste or damp places. 
Figure 311. — Club Moss. 
A, sporangial cone ; B, aerial 
stem ; C, roots ; D, underground 
stem. 
It has a hollow stem, with 
joints, a mineral coating on 
the outside of the stem, and 
Figure 312. — Equisetum 
or Horsetail, Sterile 
Branch. 
