They are plants in the form of shrubs or shrubs, which have about 30 species, deciduous in winter. The leaves are arranged opposite, petiolate, rarely sliced, heart-shaped. Its flowers are cylindrical pyramidal in appearance, at the end of the last
They are plants in the form of shrubs or shrubs, which have about 30 species, deciduous in winter. The leaves are arranged opposite, petiolate, rarely sliced, heart-shaped. Its flowers are cylindrical pyramidal in appearance, at the end of the last