sentences:  During this period, the Captain Thomas Riddel gave Loureiro the books "Systema Naturae", "Genera Plantarum" and "Philosophia Botanica" by Carl Linnaeus, which greatly influenced the Portuguese botanist.The first 40 years he stayed in Vietnam, João de Loureiro was inventorying indigenus herbal remedies.His local garden contained 1,000 unique herbal species, making him one of the greatest botanist collectors of the XVIIIth century.