LIFE HISTORY OP A FEEN 



coiled up from the tip. As the leaves grow they unroll, 

 and in some ferns, at certain stages, they often closely re- 

 semble the neck of a violin (Fig. 6). The leaf -blade 



Fig. 8. — Sporophylls of two ferns. At the left, a species of Polypodium 

 {Phymatodes) , having no indusium; at the right, Diplazium zdamcum. 



possesses veins of iibro-vascular bundles that pass down 

 the leaf -stalk and through the stem to the roots. Because 

 of the possession of these vascular bundles, ferns (and 

 all other plants of which this is true) are called vas- 



