Illustration of <i><a href="//commons.wikimedia.org/wiki/Catasetum_purum" title="Catasetum purum">Catasetum purum</a></i>
William Jackson Hooker (1785-1865)
1835
Curtis's botanical magazine vol. 62 N.S. 9 tab. 3388 (<a rel="nofollow" class="external free" href="http://www.botanicus.org/page/465908">http://www.botanicus.org/page/465908</a>)