The presence of a great many species which have disappeared or become almost extinct in other places is notable here, examples are: cedro (Cedrela montana), Colombian walnut (Juglans neotropica), comino (Aniba perutilis), laurel (Ocotea cuneata), encenillo (Weinmannia sp.), Colombian oak (Quercus humboldtii) and black oak (Colombobalanus excelsa), the latter was reported in the Park for the first time in 1979 in the site known as El Robledal on the Roble Negro trail. Additionally, the Park has a few specimens of quinine, known as ‘the miracle bark’, once considered as valuable as gold, which led to its excessive exploitation and its current status in danger of extinction.