Constance, Lincoln. <br/><br/>
Four new species of Eryngium (Umbelliferae) from Mexico 

<br/><br/> Sobretiro de : Brittonia 32(2): 118-127, 1980 
<br/><br/><label>LCCN: </label>28379 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Eryngium.