Gustavo Lozano-Contreras

Trigonobalanus excelsa, commonly called the Colombian black oak, is a species of plant in the family Fagaceae. It is a tree endemic to Colombia. The genus Trigonobalanus is related to the true oaks (Quercus) and includes three known species, T. excelsa and two species native to Southeast Asia.

Metteniusa santanderensis is a species of flowering plants in the family Metteniusaceae. It was formerly placed in the family Cardiopteridaceae. It is endemic to Colombia.

Metteniusa huilensis is a species of flowering plants in the family Metteniusaceae. It was formerly placed in the family Cardiopteridaceae. It is endemic to Colombia.

Metteniusa cundinamarcensis is a species of flowering plants in the family Metteniusaceae. It was formerly placed in the family Cardiopteridaceae. It is endemic to Colombia.

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Magnolia wolfii is a tree species in the family Magnoliaceae. It is endemic to Colombia. The species is recorded only from one locality in Risaralda Department. The species is being investigated by a conservation and propagation research program implemented by the Technological University of Pereira, with the support of Botanic Gardens Conservation International. In August 2006 scientists visited the small two hectare patch of forest where M. wolfii was known to grow. They found the area to be girded on all sides by plantations of coffee, and only three adult trees growing there, apparently

Magnolia hernandezii is a species of plant in the family Magnoliaceae. It is endemic to Colombia. The tree can attain a height of up to 40 m and trunk diameter approaching 1 m with smooth, light-brown or light-grey bark. It has a woody, globular fruit with up to 15 cm diameter. The Species is being investigated by a conservation and propagation research program implemented by Technical University of Pereira with support by Botanical Gardens Conservation International . Locally called molinillo, the tree is endemic to the Cauca river watershed and surroundings, from Antioquia department to the

Magnolia yarumalense is a species of plant in the family Magnoliaceae. It is endemic to Colombia. Common names include: Gallinazo morado, gallinazo (Andes and Jardín), boñigo (Barbosa), almanegra (Santa Rosa de Osos and Yarumal).

Magnolia guatapensis is a species of plant in the family Magnoliaceae. It is endemic to Colombia. Common names include: almanegra, almanegra de Guatapé.

Magnolia gilbertoi is a species of flowering plant in the family Magnoliaceae. It is endemic to Colombia. It is known commonly as cana bravo and hojarasco de Gilberto. This tree is part of the canopy in sub-Andean and Andean forests. It is cut for its wood and its habitat is being cleared for agriculture, making it an endangered species.

Magnolia georgii is a species of flowering plant in the family Magnoliaceae. It is endemic to Colombia. It is known commonly as cucharo.

Magnolia espinalii is a species of plant in the family Magnoliaceae. It is endemic to Colombia but critically endangered. According to López-A et al., as of 2008 there were only 23 known surviving trees in the wild. Common names include: hojarasco, magnolio de monte.