| 0 | NA 88843 | RJL-RM2023FLAL-017 | Rhododendron austrinum (Small) Rehder | Florida, United States | NA | | | 2023 | COLLECTED | 12/11/2023 | Holmes Creek at Live Oak Landing: plants found on the low bluff along the south side of Holmes Creek accessed by foot from a parking lot on Live Oak Landing Road that dead ends into the creek. | 30.59043500, -85.83899800 | 7 | Plants are growing in part shade to shade on the top and slope of the low bluff overlooking Holmes Creek in a mixed deciduous and evergreen forest. The dry mesic habitat has relatively low competition and is quite acidic. Slope: 0 to 45 percent. Aspect: Northwest. The underlying geology of this area is classified as Alluvium, of Pleistocene/Holocene origin and consists of undifferentiated Quaternary sediments of varying thickness including siliciclastics, organics and freshwater carbonates. The siliciclastics are light gray, tan, brown to black, unconsolidated to poorly consolidated, clean to clayey, silty, unfossiliferous, variably organic-bearing sands to blue green to olive green, poorly to moderately consolidated, sandy, silty clays. Organics occur as plant debris, roots, disseminated organic matrix and beds of peat. Freshwater carbonates, often referred to as marls in the literature, are scattered. (Source: USGS Florida Geologic Map Data.) The surface soil profile of this area is primarily Nankin-Cowarts-Lakeland Complex. The Nankin Series consists of very deep, well drained, moderately slowly permeable soils on uplands of the Coastal Plain. They formed in stratified loamy and clayey marine sediments. Slopes range from 0 to 60 percent. Soils are comprised of sandy loam in the upper 25 cm to sandy clay loam and sandy clay in lower strata to about 1.7 meters deep; these soils are strongly acid. 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. The Lakeland series consists of very deep, excessively drained, rapid to very rapidly permeable soils on uplands. They formed in thick beds of eolian or marine and/or fluvio-marine sands. Thickness of the sand exceeds 2 meters. Silt plus clay in the upper meter ranges from 5-10 percent. Reaction ranges from very strongly acid to moderately acid throughout. (Source: NRCS Web Soil Survey.) | Wild material | | 2165673 | NA 88843 |
| 1 | WLP 2670 | RJL2022PA-016 | Acer negundo L. | Pennsylvania, United States | NA | | | 2022 | COLLECTED | 10/21/2022 | Plants growing in woodlands above a small unnamed creek that dumps into the Middle Branch White Clay Creek in Goddard Park, West Grove Pennsylvania, off of Wickerton Road, Chester County. Plants are found regularly but scattered in the understory of the woodlands. | 39.80426000, -75.82609300 | 105 | Plants growing in a mesic, well-drained habitat of deciduous woodlands along streams and above the riparian zone that drains toward a small unnamed creek that feeds into the Middle Branch White Clay Creek. Plants generally grow in part shade to full sun, but perform best and fruit more heavily in full sun where there is abundant access to moisture. The remnant woodlands exist mostly along the steep slopes, wetlands and seeps of seasonal and year-round creeks flowing into the Middle Branch White Clay Creek. The woodlands are bordered by numerous housing developments and land converted to meadows; hence there is significant first order edge that is heavily impacted by invasive plant intrusion. Despite this fact, Acer negundo is highly competitive and competes well.
Soils: The underlying geology of this area is the Glenarm Wissahickon Formation of lower Paleozoic origin and lithologically similar to oligoclase-mica schist of the Wissahickon Formation (PZw), but also includes lenticular amphibolite bodies having ocean-floor basalt chemistry.
Source: USGS Pennsylvania Geologic Map Data (https://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=PAPZgw%3B0)
The primary soil type in the area of this collection is classified as Glenelg silt loam, 3 to 8 percent slopes. This series consists of very deep, well drained soils formed in residuum weathered from micaceous schist on uplands of the Blue Ridge and the Northern Piedmont. Saturated hydraulic conductivity is moderately high in the subsoil and moderately high to high in the substratum. This upper horizon of this soil is undifferentiated, mostly poorly drained sandy bottomland soils intermingled with decomposing organic litter and eroded silts and clays due to erosion.
Source: NRCS Web Soil Survey (https://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx) | Wild material | | 2139661 | WLP 2670 |