This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided that the original author and source are credited. Acosta et al., 2018).G. pulchella Mart. is an erect plant, with deep taproot, stems 30-50 cm high, hairy, and with a woody base. Leaves are opposite, lanceolate, mucronate, with short petiole, and densely pubescent at the back. Inflorescences in dense round clusters of pinkpurple colored flowers on long peduncles. The fruit is a one-seeded utricle (Carrizo e Isasmendi, 1998).Leaves anatomical characteristics are useful to infer adaptations to a specific environment, due to their relationship with functional parameters like photosynthesis

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided that the original author and source are credited. Acosta et al., 2018).G. pulchella Mart. is an erect plant, with deep taproot, stems 30-50 cm high, hairy, and with a woody base. Leaves are opposite, lanceolate, mucronate, with short petiole, and densely pubescent at the back. Inflorescences in dense round clusters of pinkpurple colored flowers on long peduncles. The fruit is a one-seeded utricle (Carrizo e Isasmendi, 1998).Leaves anatomical characteristics are useful to infer adaptations to a specific environment, due to their relationship with functional parameters like photosynthesis