| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Ericaceae | Rhododendron alabamense | Alabama Azalea | Moist slopes, bluffs, streambanks. | W. GA and Panhandle FL west through AL to e. MS. R. alabamense is reported for Calhoun County, SC (Radford, Ahles, & Bell 1968), but this record actually represents the more recently described R. eastmanii. |  |
| Ericaceae | Rhododendron arborescens | Sweet Azalea, Smooth Azalea, Smooth Honeysuckle | Rocky riversides, wooded stream banks, swamps, high elevation forests, shrub balds. | Primarily Appalachian: ne. PA and se. KY south to sc. NC, w. SC, c. GA, and c. AL. |  |
| Ericaceae | Rhododendron atlanticum | Dwarf Azalea | Pocosins, pine savannas, pine flatwoods, sandhill-pocosin ecotones. | An Atlantic Coastal Plain endemic: s. NJ and se. PA south to sc. GA. |  |
| Ericaceae | Rhododendron austrinum | Florida Flame Azalea | Hammocks, bluffs, floodplain forests. | Sc. GA and ne. FL west to s. AL and se. MS (Kron 1993); also reported for e. GA (Jones & Coile 1988). |  |
| Ericaceae | Rhododendron calendulaceum | Flame Azalea, Yellow Honeysuckle | Deciduous forests, particularly on mountain slopes, grassy balds. | Largely Appalachian: s. PA and s. OH to c. GA and e. TN. |  |
| Ericaceae | Rhododendron canadense | Rhodora | Bogs, peaty wetlands, barrens. | NL west to ON, south to n. NJ and PA. |  |
| Ericaceae | Rhododendron canescens | Piedmont Azalea, Southern Pinxter Azalea, Wild Azalea | Swamps, pocosins, and pine savannas. | Se. and sc. NC, n. TN, se. KY, s. IL, and e. OK, south to n. peninsular FL and se. TX. |  |
| Ericaceae | Rhododendron carolinianum | Carolina Rhododendron, Punctatum, Dwarf Laurel | Rocky summits, heath balds, high elevation forests, moist slopes. | A Southern Appalachian endemic: w. NC, e. TN, ne. GA, and nw. SC, from the Linville Gorge area (and rarely as far north as Alleghany County, NC) south and west to the Great Smoky Mountains; its precise southern limit uncertain. |  |
| Ericaceae | Rhododendron catawbiense | Pink Laurel, Catawba Rhododendron, Rose Bay, Oval-leaf laurel | Rocky summits, shrub balds, acid ridges and slopes (mostly at high elevations), north-facing bluffs in the Piedmont, and sometimes in mesic situations in the Mountains. | A Southern Appalachian endemic: VA and KY south to GA and AL, with scattered disjunct populations in the Piedmont and extreme upper Coastal Plain. |  |
| Ericaceae | Rhododendron chapmanii | Chapman's Rhododendron | Pine flatwoods. | Endemic to Panhandle FL, with an isolated disjunction in ne. FL (Clay County) that may be introduced. |  |
| Ericaceae | Rhododendron colemanii | Red Hills Azalea | Moist hammocks, moist bluffs, along streams. | Endemic to upper Coastal Plain areas of AL and w. GA. |  |
| Ericaceae | Rhododendron coryi | Longleaf pine savanna ecotones to bayheads, pineland seepage slopes. | S. GA and FL Panhandle west to e. TX, in the Coastal Plain. | ||
| Ericaceae | Rhododendron cumberlandense | Cumberland Azalea | Balds and exposed or moist slopes. | A Southern Appalachian endemic, primarily west of the Blue Ridge: e. KY and w. VA south to ec. TN, n. GA, and ne. AL; reports from the Piedmont of SC (Kron 1993) are based on R. eastmanii. |  |
| Ericaceae | Rhododendron eastmanii | May White Azalea, Eastman's Azalea | Rich slopes. | This species is endemic to the Piedmont and upper Coastal Plain of South Carolina, and locally fairly common in the Broad River drainage (Horn 2005). |  |
| Ericaceae | Rhododendron flammeum | Oconee Azalea | Longleaf pine sandhills, upland forests on slopes, ridges, stream bluffs. | W. SC west to w. GA. |  |
| Ericaceae | Rhododendron groenlandicum | Labrador Tea | Bogs and other peaty wetlands. | Greenland to AK, south to n. NJ, ne. and nw. PA, ne. OH, MI, WI, MN, w. SD, SK, AB, and nw. OR. |  |
| Ericaceae | Rhododendron maximum | Great Laurel, White Rhododendron, Great Rhododendron | Moist slopes, wet flats, bogs, swamps, north-facing bluffs in the Piedmont. | Largely Appalachian: ME, NY, and OH south to GA and AL, primarily in the mountains. |  |
| Ericaceae | Rhododendron minus | Gorge Rhododendron, Punctatum, Dwarf Laurel | Rocky slopes, escarpment gorges, rocky areas in the Piedmont, longleaf pine sandhill bluffs in the Coastal Plain. | Sc. NC and nw. NC south to sc. SC, sw. GA, and s. AL. This species ranges up to granite domes along the Blue Ridge Escarpment (such as Whiteside Mountain, Macon and Jackson counties, NC). Also in extreme sw. VA and se. KY, where probably introduced. |  |
| Ericaceae | Rhododendron molle ssp. japonicum | Suburban area. | Native of e. Asia. Alleged by Fernald (1950) to be "spread from cult. in Ct. and n. N.J.". | ||
| Ericaceae | Rhododendron obtusum | Garden Azalea, Hiryu Azalea, Kurume Azalea | Used in horticulture and sometimes long-persistent in settings where its planted status is not evident. | Native of Japan. |  |
| Ericaceae | Rhododendron periclymenoides | Wild Azalea, Pinxterflower, Pinxterbloom Azalea, Election Pink | Moist to dry slopes and streambanks. | Fairly widespread in e. United States, ranging from MA, NY, and s. OH, south to GA and AL. |  |
| Ericaceae | Rhododendron pilosum | Minniebush | Heath balds, bogs, rocky summits, and rocky woodlands, mostly at high elevations. | A Southern and Central Appalachian endemic: sc. PA, sw. PA, e. WV, w. VA, e. TN, w. NC, and ne. GA. |  |
| Ericaceae | Rhododendron prinophyllum | Election Pink, Early Azalea, Roseshell Azalea | Upland forests (especially under Quercus montana and Quercus rubra), xeric pine and oak woodlands. | NH, NY, and ne. OH, south to w. NC, nc. KY, and s. OH; disjunct in ne. AL and c. TN; also disjunct from s. IL and s. MO south to AR and e. OK. The only known location in NC is on Bluff Mountain, Ashe County (on a rocky plateau over amphibolite at about 1300m elevation); Kron (1993) also cites a collection from Transylvania County, but this is based on a labeling error. |  |
| Ericaceae | Rhododendron prunifolium | Plumleaf Azalea | Mesic ravine forests and streambanks. | Endemic to a small area along the AL-GA border, in se. AL (Kron 1993) and sw. and wc. GA (Jones & Coile 1988). |  |
| Ericaceae | Rhododendron serrulatum | Swamp Azalea, Clammy Azalea | Bogs, pocosins, wet pine savannas. | S. GA south to c. peninsular FL, west to e. LA. Its distribution northwards into the Carolinas and se. VA is uncertain. |  |
| Ericaceae | Rhododendron simsii | Indian Azalea | Used in horticulture and sometimes long-persistent in settings where its planted status is not evident. | Native of China, Japan, and Taiwan. |  |
| Ericaceae | Rhododendron smokianum | Great Smoky Mountain Rhododendron | Heath balds, heath slicks, high to medium elevation forests and woodlands. | Endemic to high and middle elevations of the Great Smoky Mountains. |  |
| Ericaceae | Rhododendron vaseyi | Pinkshell Azalea | Moist slopes, bogs, high elevation rocky summits, cliffs, high elevation heath balds. | Endemic to the mountains of NC, though approaching very close to SC and GA in the vicinity of Cashiers and Highlands, NC and reported for Rabun Bald (Rabun Co. GA) without definite documentation; R. vaseyi occurs primarily southwest of the Asheville Basin, but is found at scattered locations farther north and is locally abundant on Grandfather Mountain (at the junction of Avery, Watauga, and Caldwell counties, NC), its northernmost outpost. Cultivated outside its native distribution. |  |
| Ericaceae | Rhododendron viscosum var. montanum | Moderate to high elevation sites, in dry to seasonally seepy sites. | W. NC, nw. SC, and n. GA. | ||
| Ericaceae | Rhododendron viscosum var. viscosum | Swamp Azalea, Clammy Azalea | Moist streambanks, shrub balds, and other moist habitats. | ME and MY, WV, e. TN, n. AR, and ne. OK, south to c. peninsular FL and e. TX. |  |
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