Lundell, Cyrus Longworth. <br/><br/>
Studies of American spermatophytes. II. 

<br/><br/> Sobretiro de: Contributions from the University of Michigan Herbarium. No.7:3-57, 1942. 
<br/><br/><label>LCCN: </label>34302 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fanerógamas.