Answer: Morphological
Explanation: Morphology in biology is the study of organisms using just their form and structure. It is the form and structure of an organism.
Morphological Grouping allows you to use the size, shape, and structure of an organism or one of its parts to know the specie that organism belongs to. Using traditional systems of taxonomy, classifications can be based on the morphological characteristics of organism, and from the question the characteristics of the plants which can be are clearly captured with high resolution computer can be used to group the plants into species using the morphological concept.