“…The historic framework of the three botanical gardens was retrieved from several types of documents, such as the descriptions of the scientific expeditions performed in the late 18th century in the Portuguese territories overseas, the so-called “ Philosophical Journeys ” [ 22 , 49 ], and other historical documents with descriptions and information referring to their history, e.g., [ 18 , 23 , 24 , 45 , 47 , 48 , 49 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 ].…”