What does the Greek mythology word flora means?

Plants/ plant life.

More than that, though, Flora was the Roman goddess associated with flowers and the season of Spring. The Greeks, however, didn't have personifications of the seasons, since they viewed their passing as the coming and going of Persephone from the Underworld. So, Flora's Greek counterpart was the nymph,Chloris, from whose name we get the Word "chlorophyll".