Abbildung von <i><a href="//commons.wikimedia.org/w/index.php?title=Bryophyllum_calycinum&amp;action=edit&amp;redlink=1" class="new" title="Bryophyllum calycinum (page does not exist)">Bryophyllum calycinum</a></i> in Candolles <i>Organographie végétale</i> Band 2, Tafel 22
Augustin Pyramus de Candolle
1827
<a rel="nofollow" class="external free" href="https://books.google.ch/books?id=RsNozDWyd7EC">https://books.google.ch/books?id=RsNozDWyd7EC</a>