Bell, Peter R. <br/><br/>
The diversity of green plants / 
Peter R. Bell and Christopher L.F. Woodcock 
 - 3rd ed. 
 - London :  E. Arnold,  1983 
 - 360 p. :  ill. ;  23 cm. 
<br/><br/>p.344-345 
<br/><br/><label>ISBN: </label>0713128666 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany--Morphology