certain species of Rhododendron, of the family Ericaceae, formerly given the generic name Azalea. Neither the nature of the corolla (ring of petals) nor other characteristics are sufficiently constant to serve as a means of separating these plants into two distinct genera, although azaleas are typically deciduous while rhododendrons are evergreen. Azalea flowers are funnel-shaped, somewhat two-lipped, and often fragrant. Flowers of rhododendrons, on the other hand, are more often bell-shaped. Azalea flowers typically have only 5 projecting stamens, as compared with 10 (or more) in rhododendrons. Intermediate forms, however, do occur.