| 0 | PI 666801 | Kalmia angustifolia | Kalmia angustifolia L. | | COR | | Not Available | 2011 | DONATED | 08/08/2017 | | | | | Wild material | Fruits were about 1 cm diameter, bright red, and fully ripe. Plants were about 2 to 3 m tall scattered on edge of woods and along trails and near parking lot. | 1890393 | PI 666801 |
| 1 | PI 317610 | | Kalmia buxifolia (P. J. Bergius) Gift & Kron | United Kingdom | | | Historic | 1966 | COLLECTED | | | | | | | | 1709181 | PI 317610 |
| 2 | PI 303687 | 'Clementine Churchill' | Kalmia latifolia L. | United Kingdom | | | Historic | 1965 | COLLECTED | | | | | | | | 1700587 | PI 303687 |
| 3 | PI 296761 | | Kalmia angustifolia L. | Canada | | | Historic | 1964 | COLLECTED | | | | | | | | 1681748 | PI 296761 |
| 4 | PI 296762 | | Kalmia polifolia Wangenh. | Canada | | | Historic | 1964 | COLLECTED | | | | | | | | 1681749 | PI 296762 |
| 5 | PI 95421 | | Kalmia procumbens (L.) Gift et al. ex Galasso et al. | Alaska, United States | | | Historic | 1931 | COLLECTED | | Sitkalidak Island | | | | | | 1781745 | PI 95421 |
| 6 | PI 79031 | | Kalmia cuneata Michx. | England, United Kingdom | | | Historic | 1929 | COLLECTED | | | | | | | | 1742940 | PI 79031 |
| 7 | PI 79032 | | Kalmia polifolia Wangenh. | England, United Kingdom | | | Historic | 1929 | COLLECTED | | | | | | | | 1742941 | PI 79032 |
| 8 | NA 88936 | 24Flam54 | Kalmia latifolia L. | Georgia, United States | NA | | | 2025 | COLLECTED | 09/12/2025 | Clyo, GA: Metzger Farm, on a shelf above Savannah River. GPS points are a general location for the population, not individual plants [note: collections were combined into this USNA accession.] | 32.49317000, -81.22832000 | 50 | Wet woods on a steep, steep shelf above Savannah River. Growing in 3/4 shade. Slope: 45 to 60 degrees. Aspect: Northeast. | Wild material | | 2172819 | NA 88936 |
| 9 | NA 89076 | 2024RJLPA-002 | Kalmia latifolia L. | Pennsylvania, United States | NA | | | 2024 | COLLECTED | 09/18/2024 | Fieldstone Farm Tank Creek Nature Preserve (a property of the Pocono Heritage Land Trust): Collected along Tank Creek. The property is accessed from a parking area located on Devil's Hole Road. | 41.13862300, -75.34562700 | 493 | Mostly found in mixed deciduous forest with occasional conifers and evergreen shrubs generally on sloping sites as an understory shrub in rocky well-drained soils in shade to part-shade. Slope: 5 to 15 percent. Aspect: various. Geology: The underlying geology of this area is of Devonian origin and characterized as the Long Run Member of Catskill Formation. It is comprised of gray and grayish-red sandstone and grayish-red siltstone and mudstone in fining-upward cycles. (Source: USGS Pennsylvania Geologic Map Data). Soils: The primary soil type found here is classified as Alluvial Land. In geology, alluvial land refers to areas of land that are formed by the deposition of sediments carried by rivers, or other surface water. EPA Ecoregion (Level III): North Central Appalachians (62). EPA Ecoregion (Level IV): Low Poconos (62b). | Wild material | | 2169040 | NA 89076 |
| 10 | WLP 3423 | NCSC23-002 | Kalmia cuneata Michx. | South Carolina, United States | NA | | Not Available | 2024 | COLLECTED | 10/18/2023 | Jefferson, South Carolina: Carolina Sandhills National Wildlife Refuge. | 34.54546667, -80.18076667 | 280 | Found in open pine woodland slightly upslope from a stream bed on the border of the riparian zone. Soils are a mix of organic with high sand content. Plants found in close proximity to stream bank/ riparian buffer where vegetation is discernable different from more upland drier oak/pine dominant habitat. The largest specimens (ca 1 m) are found on the edge of open areas where shrub layer is 1 m tall +, smaller specimens (15 cm) are found in the lower shrub layer that occurs slightly more upland from stream bank and more central to the open habitat. Lower-growing individuals not typically setting seed. Plants growing in open light. Soil: Sand with well developed O horizion. | Wild material | | 2165761 | WLP 3423 |
| 11 | NA 88689 | RJL2023NJ-002 | Kalmia latifolia L. | New Jersey, United States | NA | | | 2023 | COLLECTED | 11/10/2023 | Franklin Township: Piney Hollow Preservation Area (the site is owned by Franklin Township). Plants accessed by foot along trails throughout property. | 39.57400900, -74.93602400 | 32 | Plants growing in shade to part-shade of a mesic to mesic-dry woodland habitat that is mostly deciduous, but also includes pine overstory. Slope: N/A. Aspect: N/A. Soils: The underlying geology of this area is of Middle Miocene, Serravallian origin and characterized as an Cohansey Formation. It is comprised of sand, white to yellow with local gravel and clay. Locally stained red or orange brown by iron oxides and (or) cemented into large blocks of ironstone. Unweathered clay is typically dark gray, but commonly weathers white where interbedded with thin beds of ironstone. Unit is a complex of interfingering marine and nonmarine facies. Sand is typically medium grained and moderately sorted although it ranges from fine to very coarse grained and from poorly to well sorted. Sand consists of quartz and siliceous rock fragments. Some beds are locally micaceous. In general, the sand is crossbedded, although the style of crossbedding varies significantly with the paleoenvironment. Trough crossbedding predominates, especially in the nonmarine channel fill deposits, and the scale of the crossbeds varies from small to large. Maximum thickness in the map area is about 60 m; however, thickness is difficult to determine because of the irregular basal contact and extensive post-depositional erosion. There is as much as 18 m of relief along the basal contact. The basal contact is sharp, undulatory, and directly overlain by a thin gravel bed. The Cohansey Formation unconformably overlies the Kirkwood Formation and is found in channels cut down into the Kirkwood. Where the Kirkwood consists of sandy, light-colored sediments, the basal contact of the Cohansey is drawn below crossbedded sediments. Where the Kirkwood consists of dark-colored silty beds, the basal contact is drawn between light-colored Cohansey sediments and the underlying dark-colored sediments. The Cohansey was markedly thinned because of erosion prior to deposition of overlying units in the western and southern parts of the southern sheet. The unit has been extensively eroded and stripped from large areas of the New Jersey Coastal Plain, particularly in the central sheet where outliers are common. In spite of its widespread nature, the Cohansey is poorly exposed because of its loose sandy composition, which causes it to erode easily. (Source: USGS New Jersey Geologic Map Data.) The primary soil type in the location of this collection is classified as Downer loamy sand, 0 to 5 percent slopes, Northern Coastal Plain. Downer Series soils are very deep, well-drained soils that are coarse-loamy, siliceous, semiactive, mesic Typic Hapludults. The upper strata of Downer Series from 0 to 25 cm is dark grayish brown, brown loamy sand that is dry with weak fine granular structure. It is very friable and strongly acid. Lower strata from 25 to 76 cm are yellowish brown single grain, loose loamy sand with few extremely weakly cemented masses of oxidized iron in the lower part. This layer is very strongly acid. (Source: NRCS Web Soil Survey.) | Wild material | | 2159117 | NA 88689 |
| 12 | NA 88722 | RJL2023NCSC-027 | Kalmia angustifolia L. var. carolina (Small) Fernald | South Carolina, United States | NA | | | 2023 | COLLECTED | 11/15/2023 | Little Pee Dee Heritage Preserve/Wildlife Management Area (South Carolina Department of Natural Resources Public Lands): Marsh Lake Road, 1.23 kilometers north of South Carolina Highway 917. | 34.15010900, -79.19136900 | 13 | Plants growing in part-shade to sun on the edge of an acid seasonally inundated depression as well as further away in longleaf pine understory. The site is currently dry but, based on the associated vegetation, has periods of moisture on or near the surface. Slope: N/A. Aspect: N/A. The underlying geology of this area is of Pleistocene origin and characterized as Waccamaw Formation. This formation is another Carolina coastalized terrace that is deeply weathered. It is characterized by unconsolidated, coarse-detrital, soft sand limestones and loose gray to buff fine quartz sands in which occasional small quartz pebbles are present. It also includes sedimentary, carbonate, soft limestones. (Source: USGS South Carolina Geologic Map Data.) The primary soil type in this collection area is classified as Lynn Haven Series sand. The Lynn Haven Series consists of very deep, poorly and very poorly drained, moderate or moderately rapid, permeable soils in low areas and depressions in Atlantic Flatwoods and the Gulf. They formed in thick deposits of sandy marine sediments. Th Lynn Haven Series soil is approximately 2 m thick and ranges from black near the surface to yellow brown in the deepest strata. Most of the strata are comprised of fine sands that are friable with the deepest strata also including a small percentage of organic matter. Reaction ranges from extremely acid to strongly acid throughout the profile. The water table is at 0-15 cm for periods of 2 to 6 months annually and within a depth 1 m for more than 6 months during most years; during extended dry periods it is below 1 meter. Depressional areas are ponded for long duration in most years. (Source: NRCS Web Soil Survey.) | Wild material | | 2159150 | NA 88722 |
| 13 | NA 88724 | RJL2023NCSC-029 | Kalmia buxifolia (P. J. Bergius) Gift & Kron | North Carolina, United States | NA | | | 2023 | COLLECTED | 11/15/2023 | Boiling Spring Lakes, NC: Plants growing along unused road of potential new development on Baden Street, between Camden Street and Midwood Street. The site is accessed from North Carolina Highway 87 (George II Highway SE) by turning west onto Brunswick Road and right onto Baden Street at the first intersection. | 34.01935700, -78.06110500 | 16 | Plants growing in part-shade to full sun along the road, edges of ditches and managed edges of longleaf pine forest in well-drained, but seasonally moist habitat with very little organic litter layer. It seems that low competition and exposed sandy conditions allows this plant to thrive. Slope: N/A. Aspect: N/A. The underlying geology of this area is of Pleistocene origin and characterized as Waccamaw Formation. This formation is another Carolina coastalized terrace that is deeply weathered. It is characterized by unconsolidated, coarse-detrital, soft sand limestones and loose gray to buff fine quartz sands in which occasional small quartz pebbles are present. It also includes sedimentary, carbonate, soft limestones. (Source: USGS North Carolina Geologic Map Data.) The primary soil type in this collection area is classified as Leon Series fine sand. The Leon series consists of very deep, very poorly and poorly drained, moderately rapid to moderately slowly permeable soils on upland flats, depressions, stream terraces and tidal areas. They formed in sandy marine sediments of the Eastern Gulf Coast Flatwoods, the Atlantic Coast Flatwoods and to a lesser extent in the Southern Coastal Plain. The upper horizon (0-75 cm) is comprised of a high percent of blac and lower percentage of light gray sand that is very friable and very strongly acid. The lower horizon (75-270 cm) has a range of gray, dark brown and yellowish-brown sands that range from fine to coarse and are also very strongly acid. (Source: NRCS Web Soil Survey.) | Wild material | | 2159152 | NA 88724 |
| 14 | NA 88674 | RJL2023PA-008 | Kalmia latifolia L. | Pennsylvania, United States | NA | | | 2023 | COLLECTED | 10/25/2023 | Ned Smith Center for Art and Nature. | 40.53463500, -76.92616300 | 130 | Well-drained and very rocky, dry slopes above 10-50 meters above Wiconisco Creek in mixed deciduous and evergreen woodlands in part shade to full shade. Slope: 10-40%. Aspect: North. The underlying geology of this area is of Mississippian origin and characterized as the Pocono Formation. It is comprised of light-gray to buff or light-olive-gray, medium-grained, crossbedded sandstone and minor siltstone; commonly conglomeratic at base and in middle; medial conglomerate, where present, is used to divide into Mount Carbon and Beckville Members; equivalent to Burgoon Sandstone of Allegheny Plateau. (Source: USGS Pennsylvania Geologic Map Data). The primary soil type in the collection area is classified as Laidig Series. The Laidig series consists of very deep, well drained soils formed in colluvium from sandstone, siltstone, and some shale. They are gently sloping to very steep soils on benches and foot slopes. Permeability is moderate or moderately rapid above the fragipan and moderately slow or slow in the fragipan. Slope ranges from 0 to 55 percent. Solum thickness ranges from 1.25 to 2.0 meters or more. Depth to the fragipan ranges from 0.75 to 1.25 meters. The particle-size control section averages less than 35 percent rock fragments. Rock fragments range from 5 to 50 percent in individual subhorizons of the A, E, BE, BA and Bt horizons; 15 to 70 percent in individual subhorizons of the Btx horizon; and 20 to 70 percent in the C horizon. Rock fragments are mostly sandstone but include siltstone and shale. Rock fragments include channers, cobbles, flagstones, and stones. Soils range from extremely acid through strongly acid throughout. (Source: NRCS Web Soil Survey). | Wild material | | 2159065 | NA 88674 |
| 15 | NA 88680 | RJL2023PA-014 | Kalmia latifolia L. | Pennsylvania, United States | NA | | | 2023 | COLLECTED | 10/30/2023 | West side of Pennsylvania Route 487 within the boundary of Ricketts Glen State Park. | 41.31733100, -76.30259500 | 699 | Growing in dense thickets in well-drained habitat in a mixed evergreen and deciduous woodland on shallow to moderate slopes. Slope: 3-8%. Aspect: various. The underlying geology of this area is of Mississippian and Devonian origin and characterized as the Huntley Mountain Formation. It is comprised of greenish-gray and light-olive-gray, flaggy, fine-grained sandstone, siltstone, and a few red shale interbeds; includes lower "Pocono" plus "Oswayo" of earlier workers. This formation forms a transition between Catskill Formation and Burgoon Sandstone. (Source: USGS Pennsylvania Geologic Map Data). The primary soil type in the collection area is classified as Oquaga and Lordstown Series. The Oquaga Series consists of moderately deep, somewhat excessively drained and well drained soils formed in a thin mantle of till over sandstone, siltstone, and shale bedrock on nearly level to very steep uplands. Slope ranges from 0 to 70 percent. Depth to bedrock ranges from 50 to 100 cm. Content of rock fragments ranges from 15 to 60 percent in surface horizons and from 25 to 70 percent in the subsoil, and 25 to 85 percent in the substratum. Soil reaction ranges from extremely acid to moderately acid. The Lordstown series consists of moderately deep, well drained soils formed in till and cryoturbated material derived from siltstone and sandstone on bedrock-controlled landforms of glaciated dissected plateaus. They are nearly level to very steep soils on hillsides and hilltops in glaciated bedrock-controlled uplands. Slope ranges from 0 to 90 percent. Thickness of solum and depth to bedrock ranges from 51 to 102 cm. Rock fragments are dominantly flat angular fragments and flagstones and occupy 10 to 35 percent of the volume in the Ap horizon and 20 to 60 percent in the B and C horizons. Reaction is very strongly acid through neutral in the surface layer, very strongly acid to moderately acid in the subsoil and strongly acid or moderately acid in the substratum. (Source: NRCS Web Soil Survey). | Wild material | | 2159071 | NA 88680 |
| 16 | WLP 3280 | TJK2023FL-028 | Kalmia hirsuta Walter | Florida, United States | NA | | | 2023 | COLLECTED | 11/02/2023 | Navarre, Florida: Adams St. cul-de-sac, on nine-acre private property. Infrastructure development began and was terminated due to the lack of any engineering or environmental site planning (designated wetland status). It has remained idle for a number of years. | 30.41080000, -86.92840000 | 11 | Wet Pine Flatwood transitioning to a shrub bog habitat under fire suppression. Slope: flat. Aspect: East Elevation: 36 feet. | Wild material | | 2159060 | WLP 3280 |
| 17 | NA 89011 | TJK2023FL-019 | Kalmia hirsuta Walter | Florida, United States | NA | | | 2023 | COLLECTED | 10/10/2023 | Blackwater State Forest, a few hundred yards from Juniper Creek. | 30.80110600, -86.89107500 | 15 | Elevation: 52 feet. Slope: 0%. Aspect: Southeast. | Wild material | | 2158904 | NA 89011 |
| 18 | NA 73490 | NA 73490 | Kalmia latifolia L. | | NA | | Not Available | 2023 | | | | | | | Uncertain improvement status | Full name as recorded at U.S. National Arboretum: Kalmia latifolia. Old USNA plant(s). Form received: unknown propagule type. | 2149691 | NA 73490 |
| 19 | NA 72596 | NA 72596 | Kalmia latifolia L. | | NA | | Not Available | 2023 | | | | | | | Uncertain improvement status | Full name as recorded at U.S. National Arboretum: Kalmia latifolia. Old USNA plants found growing in Fern Valley. Form received: unknown propagule type. | 2149336 | NA 72596 |
| 20 | WLP 3088 | RM2023-006 | Kalmia latifolia L. | Alabama, United States | NA | | | 2023 | COLLECTED | 12/29/2022 | This plant is growing along the edges of Gantt Lake, accessed by boat. Occasional in shaded areas around Gantt Lake. | 31.40780000, -86.46770000 | 68 | The plants were growing in open conditions on a steep north-facing bluff above Gantt Lake.
Soils: The underlying geology of this area is Claiborne Group, Tallahatta Formation, of Eocene origin, with white to very light-greenish-gray thin-bedded to massive siliceous claystone; interbedded with thin layers of fossiliferous clay, sandy clay, and glauconitic sand and sandstone.
Source: USGS Alabama Geological Map Data (https://mrdata.usgs.gov/geology/state/state.php?state=AL)
The surface soil profile of this area is primarily Eunola Series Loamy Fine Sand (0 to 2 percent slopes, rarely flooded). The Eunola series consists of very deep, moderately well drained, moderately permeable loamy soils that formed in fluvial or marine sediments. They are on low stream or marine terraces of the Southern Coastal Plain. They are strongly acid. Slopes are dominantly 0 to 3 percent but range up to 6 percent.
Source: NRCS Web Soil Survey (https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx) | Wild material | | 2141442 | WLP 3088 |
| 21 | NA 88550 | RJLSEUS2022-023 | Kalmia latifolia L. | Georgia, United States | NA | | | 2023 | COLLECTED | 12/10/2022 | East side of Georgia State Hwy. 39, on the south side of Kolomoki Creek approximately 11 kilometers south of Fort Gaines, Georgia. Common on this site, but otherwise infrequent. This species is near the southernmost end of its natural range. | 31.52053400, -85.02351600 | 53 | Plants are growing in part-shade to shade of deciduous upland, dry, deciduous woodlands on steep slopes 10-15 meters above Kolomoki Creek.
Soils: The underlying geology of this area is of Paleocene origin and characterized as Tuscahoma Sand. As mapped this formation includes lower Eocene Bashi Marl Member of the Hatchetigbee Formation. This formation consists of light-gray to light-olive-gray laminated and thin-bedded carbonaceous silt and clay interbedded with fine sand; thin lignite beds occur locally. Lower part of the formation includes beds of fossiliferous, glauconitic fine quartz sand containing spheroidal sandstone concretions, gravel and clay pebbles.
Source: USGS Georgia Geologic Map Data (https://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=GANu%3B1)
The primary soil types in the collection area are classified as Ailey-Cowarts Complex Series soils (8 to 25 percent slopes). The Ailey Series consists of well drained or somewhat excessively drained soils formed by fluviomarine and marine deposits. These soils are found marine terraces and low hills of the upper coastal plain and sandhills; they are strongly acidic. The Cowarts Series consists of very deep, moderately well and well drained soils on ridge tops and side slopes on uplands of the Coastal Plain Major Land Resource Area. They formed in loamy marine sediments. Slopes range from 1 to 60 percent.
Source: NRCS Web Soil Survey (https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx) | Wild material | | 2140777 | NA 88550 |
| 22 | NA 88562 | RJLSEUS2022-035 | Kalmia latifolia L. | Alabama, United States | NA | | | 2023 | COLLECTED | 12/12/2022 | Plants growing on both sides of River Ridge Road accessed from Alabama State Hwy 41 via Tin Cup Alley Road. Common at this site | 31.73823700, -87.35821100 | 132 | Plants are growing in part-shade to full sun on top of a very exposed ridge top under dry conditions.
Soils: The underlying geology of this area is of Eocene origin and characterized as Claiborne Group; Gosport Sand and Lisbon Formation Undifferentiated in part. Greenish-gray calcareous, glauconitic, fossiliferous clayey sand; marl; carbonaceous sand; carbonaceous silty clay; and coarse glauconitic, fossiliferous, quartz sand.
Source: USGS Alabama Geological Map Data (https://mrdata.usgs.gov/geology/state/state.php?state=AL)
The primary soil types in the collection area are classified as Saffell Very Gravelly Sandy Loam soil (5 to 8 percent slopes). The Saffell Series consists of very deep, well drained, moderately permeable soils that formed in loamy and gravelly marine sediments of the Tertiary Age and have acid reaction. These soils are found on the upper portion of the bluffs along the Alabama River.
Source: NRCS Web Soil Survey (https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx) | Wild material | | 2140787 | NA 88562 |
| 23 | NA 88514 | RJL2022MD-019 | Kalmia latifolia L. | Maryland, United States | NA | | | 2022 | COLLECTED | 11/04/2022 | Plants are growing on both sides of a fire road on Maryland Heights along the edge with Harpers Ferry National Historic Park. This location was accessed from the east where Miller Avenue meets the fire road, approximately 2 kilometers away. There is no vehicular access to the collecting area. Becoming locally uncommon. This local population is likely to be extirpated in the next 20-30 years. This collector has hiked through this area for more than 35 years and seen dramatic changes in the population. When first observed, Kalmia latifolia was a dominant understory shrub on south- to west-facing slopes beneath a mature forest canopy. Over the years, at least one forest fire has significantly reduced the population, along with a continuing increase in deer populations, resulting in catastrophic browse damage. The absence of a mature forest canopy and periods of drought have almost certainly also resulted in decline of this population. While collecting seed from scattered mature plants well above deer browse levels, this collector also noted that there was virtually no recruitment taking place. | 39.32811200, -77.72242400 | 287 | Plants are growing in part-shade to shade of a deciduous upland, very rocky, and dry forest community. Plants are frequently found growing among boulders, rock outcrops, and steep-slope erosional areas, although, not exclusively.
Soils: The underlying geology of this area is of Late Cambrian to Cambrian origin and comprised of Chilhowee Group; Weverton Formation. This includes interbedded white to dark gray, thin-bedded, micaceous, ferruginous, and sericitic quartzites, phyllites, and white, thick-bedded, ledge-making quartzites; some gray to brown ferruginous quartz conglomerate and purple-banded phyllite.
Source: USGS Maryland Geologic Map Data https://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=MDKp%3B5
The primary soil types in the collection area are classified as Dekalb-Bagtown-Rock outcrop complex, 25 to 65 percent slopes. The Dekalb series consists of moderately deep, excessively drained soils formed in material weathered from gray and brown acid sandstone in places interbedded with shale and graywacke. Slope ranges from 0 to 80 percent. Permeability is rapid. Solum thickness and depth to bedrock range from 50 to 100 cm. Flat, subangular or angular, sandstone fragments, 2.5-25 cm across increase with depth and range from 10-60 percent in individual horizons of the solum and from 50-90 percent or more in the C horizon. The amount of rock fragments typically increases with depth. Cobbly, channery, and very stony phases are common. Reaction ranges from extremely through strongly acid.
Source: NRCS Web Soil Survey (https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx) | Wild material | | 2139821 | NA 88514 |
| 24 | WLP 2676 | RJL2022NJ-007 | Kalmia latifolia L. | New Jersey, United States | NA | | | 2022 | COLLECTED | 10/24/2022 | Plants growing along Hawkins Bridge Road in Wharton State Forest. Plants are common and frequent throughout the woodlands at this location. | 39.70292400, -74.56106800 | 16 | Plants growing in a mixed Conifer-Broadleaved Evergreen-Deciduous dry to xeric forest habitat in part shade to shade.
Soils: The underlying geology of this area is the Cohansey Formation of middle Miocene origin and comprised of sand, white to yellow with local gravel and clay. It is sometimes locally stained red or orange brown by iron oxides and (or) cemented into large blocks of ironstone. Unweathered clay is typically dark gray, but commonly weathers white where it is interbedded with thin beds of ironstone. Sand is typically medium grained and moderately sorted although it ranges from fine to very coarse grained and from poorly to well sorted. Sand consists of quartz and siliceous rock fragments. Some beds are locally micaceous. Maximum thickness in the map area is about 60 meters; however, thickness is difficult to determine because of the irregular basal contact and extensive post-depositional erosion.
Source: USGS New Jersey Geologic Map Data (https://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=NJTch%3B1)
The primary soil type in the area of this collection is classified as Lakehurst sand, 0 to 5 percent slopes. Other related soils are found along the collection area; even so, this is the dominant soil in the collecting area of this species. This soil is primarily sandy coastal plain deposition that is moderately well-drained with limited organic matter in the upper horizon. This soil ranges in depth from 0.1-1.5 meters. It is very strongly acidic throughout. It is subject to periods of extreme drought.
Source: NRCS Web Soil Survey (https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx) | Wild material | | 2139667 | WLP 2676 |
| 25 | WLP 2675 | RJL2022NJ-006 | Kalmia angustifolia L. | New Jersey, United States | NA | | | 2022 | COLLECTED | 10/24/2022 | Plants growing along Hawkins Bridge Road in Wharton State Forest. Plants are common and frequent throughout the woodlands at this location. | 39.70231900, -74.56084200 | 16 | Plants growing in a mixed Conifer-Broadleaved Evergreen-Deciduous dry to xeric forest habitat in part shade to part sun.
Soils: The underlying geology of this area is the Cohansey Formation of middle Miocene origin and comprised of sand, white to yellow with local gravel and clay. It is sometimes locally stained red or orange brown by iron oxides and (or) cemented into large blocks of ironstone. Unweathered clay is typically dark gray, but commonly weathers white where it is interbedded with thin beds of ironstone. Sand is typically medium grained and moderately sorted although it ranges from fine to very coarse grained and from poorly to well sorted. Sand consists of quartz and siliceous rock fragments. Some beds are locally micaceous. Maximum thickness in the map area is about 60 meters; however, thickness is difficult to determine because of the irregular basal contact and extensive post-depositional erosion.
Source: USGS New Jersey Geologic Map Data (https://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=NJTch%3B1)
The primary soil type in the area of this collection is classified as Lakehurst sand, 0 to 5 percent slopes. Other related soils are found along the collection area; even so, this is the dominant soil in the collecting area of this species. This soil is primarily sandy coastal plain deposition that is moderately well-drained with limited organic matter in the upper horizon. This soil ranges in depth from 0.1-1.5 meters. It is very strongly acidic throughout. It is subject to periods of extreme drought.
Source: NRCS Web Soil Survey (https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx) | Wild material | | 2139666 | WLP 2675 |
| 26 | NA 88481 | RJL2022MD-002 | Kalmia latifolia L. | Maryland, United States | NA | | | 2022 | COLLECTED | 09/04/2022 | Plants growing at Elkton State Forest along roads and woodlands over a distance of approximately 5 kilometers labelled as the address of 717 Irishtown Rd, North East, MD 21901. Kalmia is very common along the unnamed gravel road as well as the understory of the upland woodlands. | 39.58852900, -75.90452900 | 60 | Plants are growing in a mesic to dry, well-drained habitat of mixed deciduous and evergreen woodlands comprised primarily of acid-loving plants. Plants are growing in shade to part shade along the unnamed road as well as the woodlands. The soils in the collection area are generally described as a complex series of fluviomarine deposits. The soils range from a thin loam layer at the surface to varying levels of loam to sandy loam and/or extremely gravelly sandy clay loam strata, depending upon geographical location (ie. Hillslope summits, slopes, footslopes, swales, etc.). The primary soil types in the collection area are classified as Russett-Christiana-Hambrook Complex and/or Sassafras and Croom Soils; though, others may intersect and overlay in specific areas. | Wild material | | 2139360 | NA 88481 |
| 27 | NA 88489 | RJL2022PA-005 | Kalmia latifolia L. | Pennsylvania, United States | NA | | | 2022 | COLLECTED | 09/10/2022 | Plants are growing on the lands of Hawk Mountain Sanctuary. This species is very common and abundant. It is one of the most dominant understory plants in woodlands. This species is a common understory shrub throughout the entire region in upland dry woodland habitats. | 40.63862000, -75.99071200 | 430 | Plants are growing primarily in shade to part-shade on a dry-mesic to very dry, well-drained upland/montane habitat characterized by upland mixed deciduous and evergreen forest that is very rocky. All of the plants found in this habitat go through periods of drought during the growing season due to the limited litter/soil layer in which moisture can be held. The underlying geology of this area is of Silurian origin and comprised of Shawangunk Formation. This formation is primarily light- to dark-gray, fine- to very coarse-grained sandstone and conglomerate containing thin shale interbeds.
Source: USGS Pennsylvania Geologic Map Data (https://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=PASs%3B14)
The surface soil profile of this area is the Hazleton series consists of deep and very deep, well drained soils formed in residuum of acid gray, brown or red sandstone on uplands. The matrix includes a considerable accumulation of thin, flat, coarse fragments of sandstone, limestone, or schist with diameters up to 15 cm. Slope ranges from 0-80%. Permeability is moderately rapid to rapid.
Source: NRCS Web Soil Survey (https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx) | Wild material | | 2139368 | NA 88489 |
| 28 | NA 88393 | NEWFS-846 | Kalmia angustifolia L. | Massachusetts, United States | NA | | | 2021 | | | | | | | Wild material | fruits come off stem below termil leaf whorl in an umbrella shape | 2138883 | NA 88393 |
| 29 | NA 88394 | NEWFS-858 | Kalmia angustifolia L. | New Hampshire, United States | NA | | | 2021 | | | | | | | Wild material | Fruits arch downward in a whorl like an umbrella under the termil leaves. | 2138893 | NA 88394 |
| 30 | NA 88395 | NEWFS-922 | Kalmia angustifolia L. | Connecticut, United States | NA | | | 2021 | | | | | | | Wild material | Bell shaped pink purple flowers whorled glabrous lanceolate leaves often found just below inflorescence seeds in tan segmented capsules | 2138942 | NA 88395 |
| 31 | NA 88396 | NEWFS-938 | Kalmia angustifolia L. | Rhode Island, United States | NA | | | 2021 | | | | | | | Wild material | Fruits come off stem below termil leaf whorl in an umbrella shape | 2138958 | NA 88396 |
| 32 | NA 88399 | NCBG-670 | Kalmia latifolia L. | Maryland, United States | NA | | | 2021 | | | | | | | Wild material | | 2116373 | NA 88399 |
| 33 | NA 88392 | NEWFS-542 | Kalmia angustifolia L. | Massachusetts, United States | NA | | | 2021 | | | | | | | Wild material | | 2115690 | NA 88392 |
| 34 | NA 88398 | NEWFS-571 | Kalmia latifolia L. | Connecticut, United States | NA | | | 2021 | | | | | | | Wild material | | 2115705 | NA 88398 |
| 35 | NA 88400 | NEWFS-214 | Kalmia polifolia Wangenh. | Massachusetts, United States | NA | | | 2021 | | | | | | | Wild material | Capsules borne from the apex of the branchlet. | 2115635 | NA 88400 |
| 36 | NA 88390 | MARSB-371 | Kalmia angustifolia L. | New Jersey, United States | NA | | | 2021 | | | | | | | Wild material | | 2113512 | NA 88390 |
| 37 | NA 88391 | MARSB-534 | Kalmia angustifolia L. | New Jersey, United States | NA | | | 2021 | | | | | | | Wild material | Growth formûthe plant is a shrub (i.e., a woody plant with several stems growing from the base)ûLeaf typeûthe leaf blade is simple (i.e., lobed or unlobed but not separated into leaflets)ûLeaves per nodeûthere are three leaves per node along the stemûthere are two leaves per node along the stemûLeaf blade edgesûthe edge of the leaf blade has no teeth or lobesûLeaf durationûthe leaves remain green all winterûarmature on plantûthe plant does not have spines, prickles, or thornsûLeaf blade lengthû30ââú¬â€œ50 mmûLeaf blade widthû7ââú¬â€œ25 mmûLeaf stalkûthe leaves have leaf stalksûFruit type (general)ûthe fruit is dry and splits open when ripeûBark textureûthe bark of an adult plant is thin and smoothûTwig winter colorûbrownûBud scale numberûthere are two scales on the winter bud, and their edges meet | 2113549 | NA 88391 |
| 38 | NA 88397 | MARSB-550 | Kalmia latifolia L. | New Jersey, United States | NA | | | 2021 | | | | | | | Wild material | Growth formûthe plant is a shrub (i.e., a woody plant with several stems growing from the base)ûLeaf typeûthe leaf blade is simple (i.e., lobed or unlobed but not separated into leaflets)ûLeaves per nodeûthere is one leaf per node along the stemûLeaf blade edgesûthe edge of the leaf blade has no teeth or lobesûLeaf durationûthe leaves remain green all winterûarmature on plantûthe plant does not have spines, prickles, or thornsûLeaf blade lengthû50–100 mmûLeaf blade widthû15–50 mmûLeaf stalkûthe leaves have leaf stalksûFruit type (general)ûthe fruit is dry and splits open when ripeûBark textureûthe bark of an adult plant is ridged or platedûthe bark of an adult plant peels off easily or hangs offûTwig winter colorûbrownûgreenûredûBud scale numberûthere are two scales on the winter bud, and their edges meet | 2113557 | NA 88397 |
| 39 | WLP 122 | 104 | Kalmia latifolia L. | Kentucky, United States | NA | | | 2020 | COLLECTED | 11/08/2020 | Madison County | 37.56347200, -84.22650000 | 427 | Growing out of rocks on cliffside. Rocky, dry location. | Wild material | | 2110298 | WLP 122 |
| 40 | WLP 120 | 102 | Kalmia latifolia L. | Kentucky, United States | NA | | | 2020 | COLLECTED | 10/14/2020 | Powell County; Natural Bridge State Park along the Whittleton Branch trail between Whittleton Branch Campground and KY 15 | 37.79702800, -83.65494400 | 388 | Steep SW facing slope above steam valley | Wild material | | 2110296 | WLP 120 |
| 41 | NA 88169 | NCBG-665 | Kalmia latifolia L. | Virginia, United States | NA |  | | 2019 | | | | | | | Wild material | | 2098504 | NA 88169 |
| 42 | NA 88171 | NCBG-667 | Kalmia latifolia L. | Maryland, United States | NA |  | | 2019 | | | | | | | Wild material | | 2098506 | NA 88171 |
| 43 | NA 88172 | NCBG-668 | Kalmia latifolia L. | Maryland, United States | NA |  | | 2019 | | | | | | | Wild material | | 2098507 | NA 88172 |
| 44 | NA 88137 | NEWFS-629 | Kalmia angustifolia L. | Maine, United States | NA |  | | 2019 | | | | | | | Wild material | | 2098240 | NA 88137 |
| 45 | NA 88101 | MARSB-304 | Kalmia angustifolia L. | New Jersey, United States | NA |  | Not Available | 2019 | | | | | | | Wild material | | 2097565 | NA 88101 |
| 46 | NA 88116 | MARSB-541 | Kalmia angustifolia L. | New Jersey, United States | NA |  | | 2019 | | | | | | | Wild material | | 2097651 | NA 88116 |
| 47 | NA 88122 | MARSB-736 | Kalmia latifolia L. | New York, United States | NA |  | | 2019 | | | | | | | Wild material | | 2097694 | NA 88122 |
| 48 | WLP 164 | NACPEC19-047 | Kalmia latifolia L. | Georgia, United States | NA | | | 2019 | COLLECTED | 09/14/2019 | Walker County; Lula Lake Land Trust: Off of South Creek trail on North side of bridge from parking lot | 34.92134100, -85.38051100 | 373 | Riparian zone, wet slope of creek, moist, sandy banks | Wild material | | 2110476 | WLP 164 |
| 49 | WLP 1375 | NA 83887 | Kalmia latifolia L. | Kentucky, United States | NA | | | 2016 | COLLECTED | 09/27/2016 | Cumberland Falls State Park, Trail #6 (Cumberland Falls Trail). | 36.83700000, -84.34000000 | 302 | Break in canopy along trail near telephone pole. | | | 1953494 | WLP 1375 |
| 50 | CKAL 9000 | Rhododendron necrotic ringspot virus | Kalmia latifolia L. | | | | Historic | 2016 | | | | | | | | | 1940406 | CKAL 9000 |
| 51 | NA 81420 | NA 81420 | Kalmia latifolia L. | Florida, United States | NA | | Not Available | 2013 | COLLECTED | PRE 03/25/2013 | Florida: Santa Rosa County; Blackwater State Forest, off Indian Ford Road. | 30.72638000, -86.89896000 | | Growing on a pure-sand raised bank/natural levee along a brownwater stream. | Wild material | | 1914564 | NA 81420 |
| 52 | NA 78905 | NA 78905 | Kalmia latifolia L. | Kentucky, United States | NA | | Not Available | 2009 | COLLECTED | 10/20/2009 | Daniel Boone National Forest; Clack Mtn. Rd. East, near intersection with Jones Ridge and Nicholas Bridge Rd. | 38.13167000, -83.37048000 | 385 | North woodland edge of power[line] cut | | | 1950476 | NA 78905 |
| 53 | NA 77975 | DACK-2008-002 | Kalmia polifolia Wangenh. | New York, United States | NA | | Not Available | 2009 | COLLECTED | NEAR 10/07/2008 | Adirondack Park Visitor Interpretive Center-Boardwalk on Boreal Life trail, near outlet of Barnham Pond | 44.45250000, -74.27361111 | 540 | Sphagnum Bog in full sun | Wild material | | 1798448 | NA 77975 |
| 54 | NA 77976 | DACK08-008 Arnold Arb 543-2008 | Kalmia angustifolia L. | New York, United States | NA | | Not Available | 2009 | COLLECTED | NEAR 10/07/2008 | Franklin Count New your,Adirondack Park Visitor Interprecenter- Board walk on Boreal Life Trail near outlet of barnham Pond | 44.45250000, -74.26361111 | 540 | Sphagnum Bog Growing in .25% shade at 0.3-0.6 m in height. Associated Taxa Laria laricina, Alnus angustifolia, Ledum groenlandicum, Picea marina, Chamaedaphne calyculata, Sarraceina purpurea, Vaccinium oxycoccos, Andromeda polifolia | Wild material | | 1800015 | NA 77976 |
| 55 | NA 77807 | RL 08291 | Kalmia latifolia L. | | NA | | Not Available | 2008 | COLLECTED | PRE 12/15/2008 | North Carolina, Transylvania County, Toxaway Mountain; Southern Highlands Reserve, under power line. | | | | Wild material | | 1896192 | NA 77807 |
| 56 | NA 77817 | RL 08301 | Kalmia latifolia L. | | NA | | Not Available | 2008 | COLLECTED | PRE 12/15/2008 | North Carolina, Jackson County, Cullowhee Falls Trail, off NC Hwy 107 | | | | Wild material | | 1896202 | NA 77817 |
| 57 | WLP 2121 | 328960 | Kalmia microphylla (Hook.) A. Heller var. microphylla | Oregon, United States | NA |  | | 2008 | COLLECTED | 08/08/2006 | | | 1234 | Slope: 0-5 Aspect: NE Soil: Silt-sand, Land form: Valley. | Wild material | | 1780358 | WLP 2121 |
| 58 | WLP 2086 | 205089 | Kalmia procumbens (L.) Gift et al. ex Galasso et al. | Alaska, United States | NA |  | | 2007 | COLLECTED | 08/16/2003 | | | 267 | | Wild material | | 1718922 | WLP 2086 |
| 59 | NA 74920 | NC2004-001 | Kalmia buxifolia (P. J. Bergius) Gift & Kron | North Carolina, United States | NA | | Not Available | 2005 | COLLECTED | 10/14/2004 | North Carolina, Stokes County, Lower Cascade Falls Overlook, Hanging Rock State Park. | 36.41555000, -80.26888000 | | Upland, dry, rocky and well-drained habitat in a mixed deciduous and evergreen woodland., slope 0.15, aspect SW, rock, clay, acidic soils | Wild material | | 1777598 | NA 74920 |
| 60 | OPGC 2259 | 20040238 | Kalmia buxifolia (P. J. Bergius) Gift & Kron | North Carolina, United States | OPGC | | Not Available | 2005 | COLLECTED | 10/14/2004 | Lower Cascade Falls Overlook. Hanging Rock State Park. Stokes County. | 36.41555556, -80.26888889 | 309 | Upland, dry, rocky and well-drained in a mixed deciduous and evergreen woodland. Aspect: SW. Slope: 15%. | Wild material | Dense to loose and open evergreen shrub 0.2 to 0.7 m tall with irregular rounded habit. Flowers white, 5-10 mm wide. | 1690887 | OPGC 2259 |
| 61 | NA 74370 | UCBG-2001-009 | Kalmia polifolia Wangenh. | California, United States | NA | | Not Available | 2004 | COLLECTED | 09/24/2001 | Mt. Shasta, Panther meadow, Abundant near flowing water with Allium validaum, Phyllodoce empetriformis, Vaccinium caespitosum | 41.35000000, -122.20000000 | 2301 | | Wild material | | 1777570 | NA 74370 |
| 62 | NA 73438 | 'Bullseye' | Kalmia latifolia L. | | NA | | Not Available | 2003 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Kalmia latifolia 'Bullseye'. | 2149663 | NA 73438 |
| 63 | NA 73441 | 'Nipmuck' | Kalmia latifolia L. | | NA | | Not Available | 2003 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Kalmia latifolia 'Nipmuck'. | 2149664 | NA 73441 |
| 64 | NA 73444 | 'Ostbo Red' | Kalmia latifolia L. | | NA | | Not Available | 2003 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Kalmia latifolia 'Ostbo Red'. | 2149665 | NA 73444 |
| 65 | NA 73445 | 'Pink Charm' | Kalmia latifolia L. | | NA | | Not Available | 2003 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Kalmia latifolia 'Pink Charm'. | 2149666 | NA 73445 |
| 66 | NA 71984 | 'Carousel' | Kalmia latifolia L. | | NA | | Not Available | 2002 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Kalmia latifolia 'Carousel'. | 2149199 | NA 71984 |
| 67 | NA 72006 | 'Raspberry Glow' | Kalmia latifolia L. | | NA | | Not Available | 2002 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Kalmia latifolia 'Raspberry Glow'. | 2149200 | NA 72006 |
| 68 | NA 72013 | 'Tinkerbell' | Kalmia latifolia L. | | NA | | Not Available | 2002 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Kalmia latifolia 'Tinkerbell'. | 2149201 | NA 72013 |
| 69 | NA 70396 | MWPCC 00-008 | Kalmia latifolia L. | Virginia, United States | NA | | Not Available | 2000 | COLLECTED | 09/12/2000 | Potts Mountain in Jefferson National forest. Craig County | 37.52500000, -80.26555556 | 1048 | Many plants along the edge of an unpaved national forest road, plants growing from back under the overstory plants to the immediate edge of the road. Soil: sandy, thin organic layer. Slope, 30 degrees, aspect, south facing fairly shady. | Wild material | Seed was collected from plants that were apparantly mowed off, only 1-2'tall, plants across the road and just into the edge of the woods were up to 10 feet tall. | 1606345 | NA 70396 |
| 70 | NA 71248 | NA 71248 | Kalmia latifolia L. | Maryland, United States | NA | | Not Available | 2000 | COLLECTED | 11/01/1999 | | | | | Wild material | | 1777235 | NA 71248 |
| 71 | NA 68959 | 'Carousel' | Kalmia latifolia L. | | NA | | Not Available | 1996 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Kalmia latifolia 'Carousel'. | 2148264 | NA 68959 |
| 72 | NA 63821 | 'Carousel' | Kalmia latifolia L. | | NA | | Not Available | 1992 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Kalmia latifolia 'Carousel'. | 2147227 | NA 63821 |
| 73 | NA 63823 | 'Nathan Hale' | Kalmia latifolia L. | | NA | | Not Available | 1992 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Kalmia latifolia 'Nathan Hale'. | 2147228 | NA 63823 |
| 74 | NA 63626 | 'Carousel' | Kalmia latifolia L. | | NA | | Not Available | 1992 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Kalmia latifolia 'Carousel'. | 2147157 | NA 63626 |
| 75 | NA 65568 | Montreal 168 | Kalmia angustifolia L. | Canada | | | Historic | 1992 | COLLECTED | 10/13/1991 | Bellechasse Co., Beaumont, Tourbiere. | | | Bog. Open, xeric, sandy habitat. | | | 1496853 | NA 65568 |
| 76 | NA 65569 | Montreal 169 | Kalmia polifolia Wangenh. | Canada | | | Historic | 1992 | COLLECTED | 10/13/1991 | Bellechasse Co., Baeumont, Tourbiere. | | | | | | 1496857 | NA 65569 |
| 77 | NA 66563 | NA 66563 | Kalmia microphylla (Hook.) A. Heller | British Columbia, Canada | | | Historic | 1992 | DONATED | | | | | | | | 1502098 | NA 66563 |
| 78 | NA 62752 | IS9 | Kalmia latifolia L. | Ohio, United States | NA | | Not Available | 1991 | COLLECTED | PRE 04/23/1991 | Ohio, Washington County, Watertown Township, Along east side of Olin Road. | | | Pinus-Quercus woodland | Wild material | | 1895653 | NA 62752 |
| 79 | NA 62253 | NG 90 | Kalmia latifolia L. | Maryland, United States | NA | | Not Available | 1990 | COLLECTED | PRE 11/09/1990 | Route 224, Southern MD; 0.25 mile stretch both sides of road below intersection of Liverpool Point Road | 38.45547100, -77.25002300 | | Dry oak-holly woodland. | Wild material | | 1506588 | NA 62253 |
| 80 | NA 62046 | NA 62046 | Kalmia angustifolia L. | North Carolina, United States | NA | | Not Available | 1990 | COLLECTED | NEAR 05/31/1990 | North Carolina: Cumberland Co. | | | | Wild material | | 1913840 | NA 62046 |
| 81 | NA 62047 | NA 62047 | Kalmia latifolia L. | North Carolina, United States | NA | | Not Available | 1990 | COLLECTED | NEAR 05/31/1990 | North Carolina: Cumberland Co. | | | | Wild material | | 1913841 | NA 62047 |
| 82 | NA 61268 | NA 61268 | Kalmia latifolia L. | Virginia, United States | NA | | Not Available | 1989 | COLLECTED | 09/26/1989 | Virginia, George Washington National Forest, road to Shep Pond | | | deciduous woodland | Wild material | | 1495995 | NA 61268 |
| 83 | NA 56796 | Myrtifolia Group | Kalmia latifolia L. | | NA | | Not Available | 1985 | | | | | | | | | 1952338 | NA 56796 |
| 84 | NA 55299 | NA 55299 | Kalmia latifolia L. | | NA | | Not Available | 1985 | | | | | | | | | 1952328 | NA 55299 |
| 85 | Ames 2913 | Index Seminum 12 | Kalmia latifolia L. | Ohio, United States | | | Historic | 1984 | COLLECTED | | Fairfield County. | | | | Wild material | Evergreen shrub. | 1022521 | Ames 2913 |
| 86 | NA 47497 | NA 47497 | Kalmia latifolia L. | | NA | | Not Available | 1981 | | | | | | | Cultivated material | Full name as recorded at U.S. National Arboretum: Kalmia latifolia. | 2145347 | NA 47497 |
| 87 | NA 45963 | 'Willowcrest' | Kalmia latifolia L. | | NA | | Not Available | 1980 | | | | | | | Cultivar | Full name as recorded at U.S. National Arboretum: Kalmia latifolia 'Willowcrest'. original accession as 44654 - wrong | 2145234 | NA 45963 |
| 88 | NA 45973 | (selection) | Kalmia latifolia L. | | NA | | Not Available | 1980 | | | | | | | Clone | Full name as recorded at U.S. National Arboretum: Kalmia latifolia (selection). originally accessioned as 44664 - wrong [Card Note: Letter from R. Jaynes 6/87 "Consider this an example of some of the variations available in Kalmia latifolia flower pigmentations..has not been named nor is it likely to be named."] | 2145235 | NA 45973 |
| 89 | NA 45976 | (selection) | Kalmia latifolia L. | | NA | | Not Available | 1980 | | | | | | | Clone | Full name as recorded at U.S. National Arboretum: Kalmia latifolia (selection). plant 44 - pink; originally accessioned as 44667 - wrong [Card Note: letter from R. Jaynes 6/87 "consider this an example of some of the variations available in Kalmia latifolia flower pigmentations...has not been named nor is it likely to be named." | 2145236 | NA 45976 |
| 90 | NA 43394 | NA 43394 | Kalmia latifolia L. | | NA | | Not Available | 1979 | | | | | | | Cultivated material | Full name as recorded at U.S. National Arboretum: Kalmia latifolia. Reference: Planted out in Garden Club of America/Kidder Area. One permanent label on wire for each plant. | 2145005 | NA 43394 |
| 91 | NA 33205 | NA 33205 | Kalmia latifolia L. | | NA | | Not Available | 1971 | | | | | | | Cultivated material | Full name as recorded at U.S. National Arboretum: Kalmia latifolia. Purchased thru Friends of the National Arboretum Acct. #22 | 2144357 | NA 33205 |
| 92 | NA 18226 | NA 18226 | Kalmia latifolia L. | District of Columbia, United States | NA | | Not Available | 1961 | COLLECTED | | U.S. National Arboretum (particularly in and around the Dogwood Collection, but not limited to that section.) | | | | Uncertain improvement status | Full name as recorded at U.S. National Arboretum: Kalmia latifolia. | 2143634 | NA 18226 |