Shrub individuals are herein understood as woody plants shorter than 4 meters and branched from their base, whereas arboreal individuals are understood as woody plants taller than 4 meters presenting well-defined main trunk and branched crown .
Consideramos arbustos las plantas leñosas, usualmente con menos de 4 metros de altura y ramificada desde su base; y árboles aquellas plantas leñosas de más de 4 metros de altura, con un tronco principal definido y una copa ramificada .