Illustration of <i><a href="//commons.wikimedia.org/wiki/Bifrenaria_tetragona" title="Bifrenaria tetragona">Bifrenaria tetragona</a></i>  (as syn. <i>Maxillaria tetragona</i>)
Swan sc. , drawing probably by <a href="//commons.wikimedia.org/wiki/Category:William_Jackson_Hooker" title="Category:William Jackson Hooker">William Jackson Hooker</a>
1832
<p><a href="//commons.wikimedia.org/wiki/Category:Curtis%27s_Botanical_Magazine_(Orchidaceae)" title="Category:Curtis's Botanical Magazine (Orchidaceae)"><i>"Curtis's Botanical Magazine"</i></a> vol.59 (N.S. 4)  pl. 3146   <br></p>
(<a rel="nofollow" class="external free" href="http://botanicus.org/page/495181">http://botanicus.org/page/495181</a>)