This leggy lady is growing under the deck in my backyard. Azalea?? If yes, count me in!
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Above the leaves are "too leathery" and "too large", although I have no size reference. I would guess this one would normally be classed as a Rhododendron. Flowers would help identify it.
As said before, all azalea are rhododendrons, and azalea has been dropped as a formal botanical distinction. There are intermediates all over the genus, so the traits of the "original concept of azalea" appear in many different unrelated sub-groups of Rhododendron.
But in "Original Concept" - What makes an azalea is the flowers are singles, or clustered but only up to 4 (I think, not totally sure of the count allowed?) in a cluster, or truss. Rhododendrons tend to have flowers anywhere from singles to clustered in a truss of up to 20. (I think, but not certain of the max count in a truss, and won't take the time to look it up)
So if you have one of the small leaf, less than 2 inches as bonsai (5.1 cm for the rest of the world), and relatively few flowers in a cluster or truss, I think it is fair game for the contest. I believe hybrids like R. 'Rampo' and 'Purple Gem' (R. fastigiatum x minus) or R. dauricum or any of the small leaf Rhododendrons, should be allowed to compete.
By the way, I have a R. x 'Purple Gem' and it does look a lot like a Satsuki, except the leaves are leathery, and curl up for the winter. Also the ramification is more coarse than a similar size Satsuki. I won't be entering it simply because it is more a landscape plant than a pot plant. ('Purple Gem' is winter hardy to -25 F or colder -32 C ).