Morton, C. V. <br/><br/>
The fern colletions in some Eropean herbaria. VII 

<br/><br/> Sobretiro de: Amer. Fern J. 61(2): 59-75, 1971 
<br/><br/><label>LCCN: </label>40734 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Helechos.