Plants Species and their respective families can be explored here.
Phytomorphology is the investigation of the Physical appearance and outer structure of plants. It is valuable in the visually distinguishing the plants in general.
Taxonomy or taxonomical classification is a categorization scheme, particularly a hierarchical classification, that organises things into certain groups or similar types.
The APG IV system of angiosperms classification is the fourth iteration of the Angiosperm Phylogeny Group. It is primarily molecular-based system of plant taxonomy for flowering plants.