The plants of a particular region, habitat, or geological period. The flora of the Amazon rainforest is incredibly diverse, with thousands of plant species.
A book or other work describing the plants of a particular region or time. The botanist consulted a detailed flora to identify the rare plant species she discovered.
The microorganisms, especially bacteria, that normally inhabit a particular environment such as the gut or skin. Antibiotic treatment can upset the balance of the intestinal flora.