Rhododendron sp. (Rhododendron): Flowers

All azaleas are now classified under this genus: "True" rhododendrons are usually evergreen, have 10 or more stamens (azaleas usually have 5) and leaves are often scaly with small dots on the underside. Azalea leaves are usually hairy and the flowers are usually funnel-shaped, whereas "true" rhododendron flowers are bell-shaped. Rarely setting seed, 'PJM' is a dependable, prolific annual bloomer. It has pale, rose-purple flowers clustered at the shoot tips from early May into June. Most rhododendrons flower late spring and early summer with terminal clusters of 5 to 10 flowers.