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| Rhododendron calendulaceum at Craggy Gardens, North Carolina | |
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| Subsection: | Pentanthera
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North American azaleas are flowering shrubs in the genus Rhododendron, section Pentanthera, subsection Pentanthera, so named because they all have five stamens.[1] Most are in the United States, with one species found in Canada and one being found in Mexico. North American azaleas are commonly confused with azaleas of Asian origin, the evergreen azaleas. North American azaleas are deciduous and produce two types of buds. One is a larger and produces about 20 flowers while the other bud produces a leafy shoot.[1] The flower color, fragrance, and number of stamens vary among species.
- ^ a b Towe, L. Clarence (2004). American Azaleas. Portland: Timber Press. ISBN 9780881926453.