The Plant Classification

Plant systematics is the study of plant classification and evolution. It is the foundation of plant science.

The broad technique used to define order limits resulted in the acknowledgment of 40 orders.

The APG II system recognised 45 orders, which were five more than the Angiosperm Phylogeny Group system.

The APG III system of flowering plant classification is the third iteration of the Angiosperm Phylogeny Group.

The APG IV system of angiosperms classification is the fourth iteration of the Angiosperm Phylogeny Group.