An executive drove from home at an average speed of 30 mph to an airport where a helicopter was waiting. The executive boarded the helicopter and flew to the corporate offices at an average speed of 60 mph. The entire distance was 150 miles; the entire trip took three hours.
Species azaleas are reproduced through seeds, but varieties do not reproduce true from a seed. They are propagated from stem cuttings creating a clone plant of the parent. All this selection in azalea plant types creates a variety of plant growing conditions, sizes, blossom colors and blooming times.
That's because azalea plants belong to the genus, Rhododendron -- and the word azalea has essentially become this bush's common name. But there are also members of this genus that are just plain rhododendrons (note the lower-case r).