Definition of charro. plural. -s. : a Mexican horseman or cowboy typically dressed in an elaborately decorated outfit of close-fitting pants, jacket or serape, and sombrero.
Natural resins are classified according to their physical and chemical properties into hard resins, oleoresins, and gum resins (Moussouris and Regato 1999). Conifers have a long and complex spiritual tradition in our culture. Their evergreen nature has made them symbols of immortality; Taxus baccata is a good example.
Conifers are one of the oldest groups of plants, with araucaria-like trees first appearing about 290 million years ago, and primitive representatives of most of the conifer families appearing during the Mesozoic era, from 230 to 68 million years ago.