Illustration of <i><a href="//commons.wikimedia.org/wiki/Cyananthus_lobatus" title="Cyananthus lobatus">Cyananthus lobatus</a></i>
Joseph Dalton Hooker (1817-1911)
1880
Curtis's botanical magazine vol. 106 ser. 3 nr. 36 tab. 6485 (<a rel="nofollow" class="external free" href="http://www.botanicus.org/page/436757">http://www.botanicus.org/page/436757</a>)