It is based on morphological traits and non-evolutionary properties of organisms (e.g. categorization of plants based on the number and position of their stamens, style, and stigmas) rather than the genuine natural relationship species.
The classification is not based on plant relationships.
Based on one or two morphological superficial characteristics.
Based on one or two morphological superficial characteristics.
Characters were picked haphazardly, sexually, and just for the sake of convenience.
Does not provide any insight into the origins and development of various taxa.