Manual of vascular plants of northeastern United States and adjacent Canada 

 - 2 ed. 
 - New York :  The New York Botanical Garden,  1993 
 - 910 p. 
<br/><br/><label>LCCN: </label>9470 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botánica--Canadá.<br/>Botánica--E.U.A.<br/>Tracheophyta.
<br/><br/><label>Dewey Class. No.: </label>587  / M3 1993