Illustration of <i><a href="//commons.wikimedia.org/wiki/Aristea_cyanea" title="Aristea cyanea">Aristea cyanea</a></i>
William Curtis (1746-1799)
1799
The botanical magazine vol. 13-14 tabl. 458 (<a rel="nofollow" class="external free" href="http://www.botanicus.org/page/468978">http://www.botanicus.org/page/468978</a>)