Fig. 108. <i><b>Lycopodium alpinum</b></i> L. from the second edition of <i><a href="//commons.wikimedia.org/wiki/Britton_%26_Brown,_Illustrated_Flora,_Second_Edition" title="Britton &amp; Brown, Illustrated Flora, Second Edition">An Illustrated Flora of the Northern United States, Canada and the British Possessions</a></i> (New York, 1913)<br><i>Lycopodium alpinum</i> L. is a synonym of <i><b><a href="//commons.wikimedia.org/wiki/Diphasiastrum_alpinum" title="Diphasiastrum alpinum">Diphasiastrum alpinum</a></b></i> (L.) Holub.
Nathaniel Lord Britton &amp; Addison Brown
1913
An Illustrated Flora of the Northern United States, Canada and the British Possessions, 2nd edition (1913)