Sporne, K. R. <br/><br/>
The morphology of pteridophytes :  the structure of ferns and allied plants / 
K. R. Sporne 
 - 2nd ed. 
 - London :  Hutchinson,  1966 
 - 191 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliographical references (p.183-188) and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ferns--Morphology<br/>Pteridophytes