Keywords: Porphyrian and derivated trees gallery small.png Compilation of six Porphyrian and derivated trees for quicker display WP Images see details below 2007-02-27 me ; PD-old a Image Arbor porphyrii from Purchotius' Institutiones philosophicae I 1730 png<br/>b Image Arbor porphyrii probably from one of Boethius' translations png<br/>c Image Arbor scientiae Ramon Llull using A porphyrii structure png<br/>d de Image Arbor-scientiae png<br/>e Image ENC SYSTEME FIGURE jpeg<br/>f Image Encyclopédie Figurative System of Human Knowledge jpg Porphyrian tree PD-old |