I. Forest 10 I. A n a. Lowland tropical or subtropical seasonal evergreen forest 10




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Appendix 4. Ecological Association Reports for Southeast Seamless Network

Table of Contents

I. Forest 10

I.A.3.N.a. Lowland tropical or subtropical seasonal evergreen forest 10

A.33 Bursera simaruba - Coccoloba diversifolia - Nectandra coriacea - Eugenia axillaris Forest Alliance 10

[CEGL007003] Bursera simaruba - Swietenia mahagoni - Lysiloma latisiliquum / Nectandra coriacea - Coccoloba diversifolia Forest 11

[CEGL007004] Sideroxylon foetidissimum - Sideroxylon salicifolium - Ficus aurea - Quercus virginiana - Celtis laevigata Forest 13

[CEGL004710] Swietenia mahagoni - Piscidia piscipula - Colubrina arborescens Forest 14



A.34 Casasia clusiifolia - Guapira discolor Forest Alliance 15

[CEGL004711] Thrinax radiata - Casasia clusiifolia - Erithalis fruticosa Forest 15



I.A.4.N.a. Lowland temperate seasonal evergreen forest 16

A.55 Quercus virginiana - (Sabal palmetto) Forest Alliance 16

[CEGL007813] Juniperus virginiana var. silicicola - (Quercus virginiana, Sabal palmetto) Forest 18

[CEGL007032] Quercus virginiana - (Pinus elliottii var. elliottii, Sabal palmetto) / Persea borbonia - Callicarpa americana Forest 19

I.A.4.N.g. Saturated temperate seasonal evergreen forest 22

A.60 Magnolia virginiana - Persea palustris Saturated Forest Alliance 22

[CEGL007015] Magnolia virginiana - Persea palustris - Chrysobalanus icaco / Acrostichum danaeifolium - Nephrolepis exaltata Forest 24



A.61 Sabal palmetto - Quercus virginiana Saturated Forest Alliance 25

[CEGL007060] Quercus laurifolia - Sabal palmetto / Myrsine floridana - Psychotria nervosa Forest 26



I.A.5.N.c. Seasonally flooded tropical or subtropical broad-leaved evergreen sclerophyllous forest 27

A.75 Rhizophora mangle - Conocarpus erectus Seasonally Flooded Forest Alliance 27

[CEGL007067] Rhizophora mangle - (Avicennia germinans, Laguncularia racemosa) / Acrostichum spp. Forest 27



I.A.5.N.d. Semipermanently flooded tropical or subtropical broad-leaved evergreen sclerophyllous forest 28

A.76 Annona glabra Semipermanently Flooded Forest Alliance 28

[CEGL007055] Annona glabra / Crinum americanum - Bacopa caroliniana Forest 29



I.A.5.N.e. Saturated tropical or subtropical broad-leaved evergreen sclerophyllous forest 30

A.77 Conocarpus erectus - Metopium toxiferum Saturated Forest Alliance 30

[CEGL007057] Conocarpus erectus - Metopium toxiferum - Acoelorraphe wrightii / Chrysobalanus icaco Forest 30



I.A.8.N.b. Rounded-crowned temperate or subpolar needle-leaved evergreen forest 31

A.128 Pinus strobus Forest Alliance 31

[CEGL007100] Pinus strobus / Kalmia latifolia - (Vaccinium stamineum, Gaylussacia ursina) Forest 32



A.131 Pinus virginiana Forest Alliance 34

[CEGL008500] Pinus virginiana - (Pinus rigida, Pinus pungens) / Schizachyrium scoparium Forest 35



I.A.8.N.c. Conical-crowned temperate or subpolar needle-leaved evergreen forest 37

A.136 Abies fraseri - Picea rubens Forest Alliance 37

[CEGL006308] Abies fraseri / (Rhododendron catawbiense, Rhododendron carolinianum) Forest 38

[CEGL006049] Abies fraseri / Viburnum lantanoides / Dryopteris campyloptera - Oxalis montana / Hylocomium splendens Forest 41

[CEGL007130] Picea rubens - (Abies fraseri) / (Rhododendron catawbiense, Rhododendron maximum) Forest 45

[CEGL007131] Picea rubens - (Abies fraseri) / Vaccinium erythrocarpum / Oxalis montana - Dryopteris campyloptera / Hylocomium splendens 49

Forest 49



A.138 Picea rubens Forest Alliance 54

[CEGL006152] Picea rubens - (Tsuga canadensis) / Rhododendron maximum Forest 55



A.144 Tsuga caroliniana Forest Alliance 57

[CEGL007138] Tsuga caroliniana - (Tsuga canadensis) / Rhododendron maximum Forest 58

[CEGL006178] Tsuga caroliniana - Pinus (rigida, pungens, virginiana) Forest 59

[CEGL007139] Tsuga caroliniana / Kalmia latifolia - Rhododendron catawbiense Forest 61



I.A.8.N.e. Temporarily flooded temperate or subpolar needle-leaved evergreen forest 62

A.171 Tsuga canadensis - (Pinus strobus) Temporarily Flooded Forest Alliance 62

[CEGL008405] Liriodendron tulipifera - Pinus strobus - (Tsuga canadensis) / Carpinus caroliniana / Amphicarpaea bracteata Forest 63

[CEGL007143] Tsuga canadensis - (Pinus strobus) Temporarily Flooded Forest 65

I.A.8.N.g. Saturated temperate or subpolar needle-leaved evergreen forest 67

A.198 Picea rubens Saturated Forest Alliance 67

[CEGL006277] Picea rubens - (Tsuga canadensis) / Rhododendron maximum Saturated Forest 68



I.B.2.N.a. Lowland or submontane cold-deciduous forest 70

A.266 Betula alleghaniensis - Fagus grandifolia - Aesculus flava Forest Alliance 70

[CEGL004973] Aesculus flava - Betula alleghaniensis - Acer saccharum / Acer spicatum / Caulophyllum thalictroides - Laportea canadensis Forest 71

[CEGL007285] Betula alleghaniensis - Fagus grandifolia - Aesculus flava / Viburnum lantanoides / Eurybia chlorolepis - Dryopteris intermedia 74

Forest 74

[CEGL004982] Betula alleghaniensis - Tilia americana var. heterophylla / Acer spicatum / Ribes cynosbati / Dryopteris marginalis Forest 78

[CEGL006124] Betula alleghaniensis / Ribes glandulosum / Polypodium appalachianum Forest 80

[CEGL006246] Fagus grandifolia / Ageratina altissima var. roanensis Forest 85

[CEGL006130] Fagus grandifolia / Carex pensylvanica - Carex brunnescens Forest 87



A.258 Carya (glabra, ovata) - Fraxinus americana - Quercus (alba, rubra) Forest Alliance 91

[CEGL008516] Quercus prinus - Quercus rubra - Carya ovalis / Solidago (ulmifolia, arguta) - Galium latifolium Forest 92

[CEGL008514] Quercus rubra - Quercus prinus - Carya ovalis / Cercis canadensis / Solidago caesia Forest 94

A.228 Fagus grandifolia - Quercus alba Forest Alliance 97

[CEGL007211] Fagus grandifolia - Quercus nigra Forest 99



A.229 Fagus grandifolia - Quercus rubra - Quercus alba Forest Alliance 101

[CEGL004539] Fagus grandifolia - Quercus alba - (Quercus prinus) / Kalmia latifolia - (Rhododendron catawbiense) Forest 102

[CEGL008465] Fagus grandifolia - Quercus rubra / Cornus florida / Polystichum acrostichoides - Hexastylis virginica Forest 104

[CEGL008466] Fagus grandifolia - Quercus rubra / Ostrya virginiana - Acer (barbatum, leucoderme) / Actaea racemosa - Sanguinaria canadensis 106

Forest 106

A.235 Liriodendron tulipifera - Tilia americana var. heterophylla - Aesculus flava - Acer saccharum Forest Alliance 108

[CEGL007695] Aesculus flava - Acer saccharum - (Fraxinus americana, Tilia americana var. heterophylla) / Hydrophyllum canadense - Solidago 109

flexicaulis Forest 109

[CEGL007711] Tilia americana var. heterophylla - Fraxinus americana - (Ulmus rubra) / Sanguinaria canadensis - (Aquilegia canadensis, 113

Asplenium rhizophyllum) Forest 113

A.239 Quercus alba - (Quercus rubra, Carya spp.) Forest Alliance 115

[CEGL007692] Quercus alba - Quercus rubra - Quercus prinus / Collinsonia canadensis - Podophyllum peltatum - Amphicarpaea bracteata Forest 116

[CEGL008519] Quercus rubra - Carya ovalis / Collinsonia canadensis - Impatiens pallida Forest 119

[CEGL008518] Quercus rubra - Quercus alba - Fraxinus americana - Carya (ovata, ovalis) / Actaea racemosa Forest 122

[CEGL007878] Quercus rubra - Tilia americana var. heterophylla - Halesia tetraptera var. monticola / Collinsonia canadensis - 125

Tradescantia subaspera Forest 125

[CEGL003949] Quercus rubra / Magnolia tripetala - Cercis canadensis / Actaea racemosa - Tiarella cordifolia Forest 127

A.271 Quercus alba Montane Forest Alliance 129

[CEGL007295] Quercus alba / Kalmia latifolia Forest 130



A.1912 Quercus muehlenbergii - (Acer saccharum) Forest Alliance 132

[CEGL007215] Quercus rubra - Quercus muehlenbergii / Hamamelis virginiana / Polymnia canadensis Forest 134



A.248 Quercus prinus - (Quercus coccinea, Quercus velutina) Forest Alliance 135

[CEGL006281] Quercus prinus - Quercus alba / Oxydendrum arboreum / Vitis rotundifolia Forest 136

[CEGL008524] Quercus prinus / Rhododendron catawbiense - Kalmia latifolia Forest 138

A.249 Quercus prinus - Quercus (alba, falcata, rubra, velutina) Forest Alliance 141

[CEGL004415] Quercus prinus - Quercus alba / Oxydendrum arboreum / Kalmia latifolia Forest 142



A.272 Quercus rubra Montane Forest Alliance 143

[CEGL007298] Quercus rubra / Carex pensylvanica - Ageratina altissima var. roanensis Forest 145

[CEGL008505] Quercus rubra / Ilex montana - Menziesia pilosa / Dennstaedtia punctilobula Forest 148

A.1911 Quercus velutina - Quercus alba - (Quercus coccinea) Forest Alliance 150

[CEGL007691] Quercus alba - Quercus coccinea - Quercus falcata / Kalmia latifolia - Vaccinium pallidum Forest 151



I.B.2.N.d. Temporarily flooded cold-deciduous forest 153

A.279 Acer saccharinum Temporarily Flooded Forest Alliance 153

[CEGL007727] Acer saccharinum / Leersia lenticularis - Commelina virginica Forest 154



A.286 Fraxinus pennsylvanica - Ulmus americana - Celtis (occidentalis, laevigata) Temporarily Flooded Forest Alliance 155

[CEGL004740] Celtis laevigata - Fraxinus pennsylvanica - Acer negundo - (Juglans nigra) / Asimina triloba / Carex grayi Forest 157



A.287 Liquidambar styraciflua - (Liriodendron tulipifera, Acer rubrum) Temporarily Flooded Forest Alliance 159

[CEGL004418] Liquidambar styraciflua - Liriodendron tulipifera / Lindera benzoin / Arisaema triphyllum ssp. triphyllum Forest 161



A.288 Platanus occidentalis - (Fraxinus pennsylvanica, Celtis laevigata, Acer saccharinum) Temporarily Flooded Forest 163

Alliance 163

[CEGL007339] Platanus occidentalis - Fraxinus pennsylvanica - Quercus imbricaria Forest 164



A.289 Platanus occidentalis - (Liquidambar styraciflua, Liriodendron tulipifera) Temporarily Flooded Forest Alliance 166

[CEGL004691] Platanus occidentalis - Liriodendron tulipifera - Betula (alleghaniensis, lenta) / Alnus serrulata - Leucothoe fontanesiana Forest 167



A.290 Populus deltoides Temporarily Flooded Forest Alliance 170

[CEGL007731] Populus deltoides / Acer negundo / Boehmeria cylindrica Forest 171



A.291 Quercus (michauxii, pagoda, shumardii) - Liquidambar styraciflua Temporarily Flooded Forest Alliance 173

[CEGL004678] Quercus laurifolia - Quercus michauxii - Liquidambar styraciflua / Carpinus caroliniana Forest 174

[CEGL008487] Quercus shumardii - Quercus michauxii - Quercus nigra / Acer barbatum - Tilia americana var. heterophylla Forest 176

A.292 Quercus (phellos, nigra, laurifolia) Temporarily Flooded Forest Alliance 178

[CEGL007732] Liquidambar styraciflua - Quercus (laurifolia, nigra) - (Pinus taeda) / Arundinaria gigantea / Carex abscondita Forest 180



A.297 Salix nigra Temporarily Flooded Forest Alliance 182

[CEGL007734] Salix nigra - Fraxinus pennsylvanica Forest 183



I.B.2.N.e. Seasonally flooded cold-deciduous forest 184

A.316 Acer rubrum - Fraxinus pennsylvanica Seasonally Flooded Forest Alliance 184

[CEGL004420] Acer rubrum var. trilobum - Fraxinus pennsylvanica / Carex crinita - Peltandra virginica Forest 186

[CEGL007728] Fraxinus pennsylvanica / Leersia lenticularis - Carex lupulina Forest 187

A.344 Fraxinus caroliniana Seasonally Flooded Forest Alliance 188

[CEGL004478] Fraxinus caroliniana / Crinum americanum - Bacopa caroliniana Forest 189



A.321 Liquidambar styraciflua - (Acer rubrum) Seasonally Flooded Forest Alliance 190

[CEGL007388] Liquidambar styraciflua - Acer rubrum / Carex spp. - Sphagnum spp. Forest 190



A.328 Quercus lyrata - (Carya aquatica) Seasonally Flooded Forest Alliance 192

[CEGL004735] Quercus lyrata - Quercus laurifolia - Taxodium distichum / Saururus cernuus Forest 194



A.330 Quercus phellos Seasonally Flooded Forest Alliance 195

[CEGL007403] Quercus phellos / Carex (albolutescens, intumescens, joorii) - Chasmanthium laxum / Sphagnum lescurii Forest 196



A.332 Salix caroliniana Seasonally Flooded Forest Alliance 198

[CEGL007409] Salix caroliniana / Bacopa caroliniana - Blechnum serrulatum Forest 199



A.336 Taxodium ascendens Seasonally Flooded Forest Alliance 200

[CEGL007415] Taxodium ascendens / Annona glabra - Cephalanthus occidentalis - Morella cerifera - Salix caroliniana Forest 200

[CEGL007414] Taxodium ascendens / Annona glabra / Bacopa caroliniana Forest 202

[CEGL007416] Taxodium ascendens / Chrysobalanus icaco - Ficus aurea - Persea palustris Forest 203



A.337 Taxodium distichum - Nyssa (aquatica, biflora, ogeche) Seasonally Flooded Forest Alliance 204

[CEGL007719] Taxodium distichum - Fraxinus pennsylvanica - Quercus laurifolia / Acer rubrum / Saururus cernuus Forest 205



I.B.2.N.f. Semipermanently flooded cold-deciduous forest 206

A.345 Nyssa aquatica - (Taxodium distichum) Semipermanently Flooded Forest Alliance 207

[CEGL007432] Taxodium distichum - Nyssa aquatica - Nyssa biflora / Fraxinus caroliniana / Itea virginica Forest 207



I.B.2.N.g. Saturated cold-deciduous forest 210

A.348 Acer rubrum - Nyssa sylvatica Saturated Forest Alliance 210

[CEGL004426] Acer rubrum var. trilobum / Viburnum nudum var. nudum / Osmunda cinnamomea - Saururus cernuus - Impatiens 211

capensis Forest 211

A.347 Fraxinus nigra - Acer rubrum Saturated Forest Alliance 213

[CEGL008416] Acer rubrum - Fraxinus americana - Fraxinus nigra - Liriodendron tulipifera / Carex bromoides - Caltha palustris Forest 214



A.350 Liquidambar styraciflua Saturated Forest Alliance 218

[CEGL004631] Liquidambar styraciflua - Quercus laurifolia / Magnolia virginiana / Carex lonchocarpa Forest 219



A.351 Nyssa biflora - Acer rubrum - (Liriodendron tulipifera) Saturated Forest Alliance 221

[CEGL004427] Nyssa biflora - (Acer rubrum) / Ilex opaca / Leucothoe axillaris / Carex atlantica ssp. capillacea Forest 222



A.353 Quercus michauxii - Quercus pagoda Saturated Forest Alliance 224

[CEGL007737] Quercus michauxii / Carpinus caroliniana - Ilex opaca / Leucothoe racemosa Forest 225



I.C.1.N.c. Seasonally flooded tropical or subtropical semi-deciduous forest 226

A.366 Taxodium distichum - Persea palustris - Chrysobalanus icaco Seasonally Flooded Forest Alliance 226

[CEGL007454] Rhizophora mangle - Taxodium distichum - Metopium toxiferum / Chrysobalanus icaco / Apteria aphylla Forest 227

[CEGL007440] Taxodium distichum / Persea palustris - Fraxinus caroliniana - Chrysobalanus icaco / Blechnum serrulatum Forest 228

I.C.3.N.a. Mixed needle-leaved evergreen - cold-deciduous forest 229

A.384 Picea rubens - Betula alleghaniensis Forest Alliance 229

[CEGL004983] Picea rubens - (Betula alleghaniensis, Aesculus flava) / Rhododendron (maximum, catawbiense) Forest 230

[CEGL006256] Picea rubens - (Betula alleghaniensis, Aesculus flava) / Viburnum lantanoides / Oxalis montana - Solidago glomerata Forest 232

A.394 Pinus echinata - Quercus (alba, falcata, stellata, velutina) Forest Alliance 234

[CEGL008427] Pinus echinata - Quercus alba / Vaccinium pallidum / Hexastylis arifolia - Chimaphila maculata Forest 235



A.395 Pinus echinata - Quercus (coccinea, prinus) Forest Alliance 238

[CEGL007493] Pinus echinata - Quercus (prinus, falcata) / Oxydendrum arboreum / Vaccinium pallidum Forest 238



A.401 Pinus strobus - Quercus (alba, rubra, velutina) Forest Alliance 241

[CEGL007517] Pinus strobus - Quercus alba - (Carya alba) / Gaylussacia ursina Forest 242



A.412 Tsuga canadensis - Betula alleghaniensis Forest Alliance 244

[CEGL007861] Betula alleghaniensis - (Tsuga canadensis) / Rhododendron maximum / Leucothoe fontanesiana Forest 245



A.413 Tsuga canadensis - Liriodendron tulipifera Forest Alliance 249

[CEGL007693] Tsuga canadensis - Halesia tetraptera - (Fagus grandifolia, Magnolia fraseri) / Rhododendron maximum / Dryopteris intermedia 249

Forest 249

[CEGL007136] Tsuga canadensis / Rhododendron maximum - (Clethra acuminata, Leucothoe fontanesiana) Forest 251



I.C.3.N.d. Saturated mixed needle-leaved evergreen - cold-deciduous forest 254

A.447 Tsuga canadensis - Acer rubrum Saturated Forest Alliance 254

[CEGL008533] Tsuga canadensis - Betula alleghaniensis / Veratrum viride - Carex scabrata - Oclemena acuminata Forest 255



II. Woodland 258

II.A.1.N.c. Seasonally flooded tropical or subtropical broad-leaved evergreen woodland 258

A.473 Conocarpus erectus Seasonally Flooded Woodland Alliance 258

[CEGL003505] Conocarpus erectus - Rhizophora mangle - Laguncularia racemosa - Metopium toxiferum / Tillandsia spp. Woodland 258



II.A.2.N.a. Temperate broad-leaved evergreen woodland 259

A.479 Quercus virginiana - Juniperus virginiana - (Sabal palmetto) Woodland Alliance 259

[CEGL003525] Juniperus virginiana var. silicicola - Zanthoxylum clava-herculis - Quercus virginiana - (Sabal palmetto) / Sageretia minutiflora 260

- (Sideroxylon tenax) Woodland 260

A.481 Sabal palmetto Temperate Woodland Alliance 261

[CEGL003526] Sabal palmetto - (Juniperus virginiana var. silicicola) Woodland 262



II.A.3.N.a. Tropical or subtropical needle-leaved evergreen woodland 263

A.491 Pinus elliottii Tropical Woodland Alliance 263

[CEGL003534] Pinus elliottii var. densa / Sabal palmetto / Serenoa repens Woodland 263

[CEGL003538] Pinus elliottii var. densa / Serenoa repens - Tetrazygia bicolor - Guettarda scabra Woodland 264

[CEGL003535] Pinus elliottii var. densa / Sideroxylon salicifolium - Chrysobalanus icaco - Ilex cassine Woodland 267



II.A.3.N.d. Saturated tropical or subtropical needle-leaved evergreen woodland 268

A.493 Pinus elliottii Saturated Tropical Woodland Alliance 268

[CEGL003533] Pinus elliottii var. densa / Sabal palmetto / Schizachyrium rhizomatum - Muhlenbergia filipes - Rhynchospora divergens 268

Tropical Woodland 268

II.A.4.N.a. Rounded-crowned temperate or subpolar needle-leaved evergreen woodland 269

A.515 Pinus echinata Woodland Alliance 269

[CEGL003560] Pinus echinata / Schizachyrium scoparium Appalachian Woodland 270



A.520 Pinus palustris Woodland Alliance 272

[CEGL007738] Pinus palustris - (Pinus taeda) / Schizachyrium scoparium - Rhynchosia reniformis Woodland 273



A.521 Pinus pungens - (Pinus rigida) Woodland Alliance 275

[CEGL007097] Pinus pungens - Pinus rigida - (Quercus prinus) / Kalmia latifolia - Vaccinium pallidum Woodland 276

[CEGL004985] Pinus rigida - (Pinus pungens) / Rhododendron catawbiense - Kalmia latifolia / Galax urceolata Woodland 280

II.A.4.N.f. Saturated temperate or subpolar needle-leaved evergreen woodland 282

A.574 Pinus elliottii Saturated Temperate Woodland Alliance 282

[CEGL004680] Pinus elliottii var. elliottii / Serenoa repens - Ilex glabra - Morella cerifera - Ilex vomitoria Woodland 283



II.B.2.N.a. Cold-deciduous woodland 284

A.604 Fraxinus americana - Carya glabra - (Juniperus virginiana) Woodland Alliance 284

[CEGL003752] Carya (glabra, alba) - Fraxinus americana - (Juniperus virginiana var. virginiana) Woodland 285

[CEGL004995] Carya glabra - Fraxinus americana - Quercus prinus / Ostrya virginiana / Philadelphus hirsutus Woodland 288

[CEGL003683] Fraxinus americana - Carya glabra / Muhlenbergia sobolifera - Helianthus divaricatus - Solidago ulmifolia Woodland 290

[CEGL007720] Quercus prinus - Juniperus virginiana - (Pinus virginiana) / Philadelphus hirsutus - Celtis occidentalis Woodland 293

A.613 Quercus alba - Quercus stellata - Quercus velutina - (Quercus falcata) Woodland Alliance 294

[CEGL003722] Quercus alba - Quercus velutina - Quercus stellata / Schizachyrium scoparium - Desmodium spp. Woodland 295



A.622 Quercus prinus - Quercus coccinea Woodland Alliance 297

[CEGL008526] Quercus prinus / Quercus ilicifolia / Danthonia spicata - Solidago bicolor Woodland [Provisional] 298



A.623 Quercus prinus - Quercus marilandica Woodland Alliance 300

[CEGL003708] Quercus prinus - Quercus marilandica Piedmont Woodland 300



II.B.2.N.c. Seasonally flooded cold-deciduous woodland 302

A.651 Taxodium ascendens Seasonally Flooded Woodland Alliance 302

[CEGL003681] Taxodium ascendens / Muhlenbergia filipes - Rhynchospora microcarpa Woodland 303

[CEGL003996] Taxodium ascendens / Paspalum monostachyum - Rhynchospora microcarpa - Cladium mariscus ssp. jamaicense Woodland 304

[CEGL003997] Taxodium ascendens / Rhynchospora microcarpa - Schizachyrium rhizomatum - Muhlenbergia filipes Woodland 305



II.C.3.N.a. Mixed needle-leaved evergreen - cold-deciduous woodland 306

A.677 Pinus (rigida, pungens, virginiana) - Quercus prinus Woodland Alliance 306

[CEGL008525] Pinus virginiana - Quercus prinus / Quercus ilicifolia / (Hieracium greenii, Viola pedata) Woodland 306

[CEGL003624] Pinus virginiana / Vaccinium pallidum / Schizachyrium scoparium - Carex pensylvanica Woodland 308

III. Shrubland 310

III.A.1.N.c. Sclerophyllous tropical or subtropical broad-leaved evergreen shrubland 310

A.722 Morella cerifera - Ilex cassine Shrubland Alliance 310

[CEGL003788] Morella cerifera - Ilex cassine - Quercus virginiana - Serenoa repens Shrubland 310



III.A.1.N.g. Semipermanently flooded tropical or subtropical broad-leaved evergreen shrubland 311

A.731 Rhizophora mangle Semipermanently Flooded Shrubland Alliance 311

[CEGL003800] Rhizophora mangle / Eleocharis cellulosa Shrubland 312



III.A.2.N.b. Hemi-sclerophyllous temperate broad-leaved evergreen shrubland 313

A.744 Rhododendron (catawbiense, carolinianum) - Kalmia latifolia Shrubland Alliance 313

[CEGL003814] Kalmia latifolia - Rhododendron catawbiense - (Gaylussacia baccata, Pieris floribunda, Vaccinium corymbosum) Shrubland 314

[CEGL007876] Rhododendron carolinianum - Rhododendron catawbiense - Leiophyllum buxifolium Shrubland 317

A.745 Rhododendron maximum Shrubland Alliance 319

[CEGL003819] Rhododendron maximum Upland Shrubland 320



A.750 Serenoa repens Temperate Shrubland Alliance 322

[CEGL003812] Serenoa repens - Sabal palmetto - Ilex vomitoria - Sideroxylon tenax Shrubland 322



III.A.2.N.c. Sclerophyllous temperate broad-leaved evergreen shrubland 323

A.785 Quercus virginiana - Ilex vomitoria - (Morella cerifera) Shrubland Alliance 323

[CEGL003813] Ilex vomitoria - Quercus (geminata, virginiana) - Morella cerifera - Serenoa repens Shrubland 324



III.A.2.N.g. Temporarily flooded temperate broad-leaved evergreen shrubland 325

A.795 Arundinaria gigantea Temporarily Flooded Shrubland Alliance 325

[CEGL003836] Arundinaria gigantea ssp. gigantea Shrubland 326



III.A.2.N.i. Saturated temperate broad-leaved evergreen shrubland 329

A.1906 Morella cerifera Saturated Shrubland Alliance 329

[CEGL003839] Morella cerifera / Spartina patens Shrubland 330



III.B.2.N.a. Temperate cold-deciduous shrubland 332

A.911 Vitis aestivalis Vine-Shrubland Alliance 332

[CEGL003890] Vitis aestivalis Vine-Shrubland 332



III.B.2.N.d. Temporarily flooded cold-deciduous shrubland 334

A.943 Alnus serrulata Temporarily Flooded Shrubland Alliance 334

[CEGL003895] Alnus serrulata - Xanthorhiza simplicissima Shrubland 335



III.B.2.N.g. Saturated cold-deciduous shrubland 337

A.1014 Alnus serrulata Saturated Shrubland Alliance 337

[CEGL003909] Alnus serrulata - Lindera benzoin / Scutellaria lateriflora - Thelypteris noveboracensis Shrubland 338



III.C.2.N.a. Mixed evergreen - cold-deciduous shrubland 339

A.1050 Kalmia latifolia - Gaylussacia baccata Shrubland Alliance 339

[CEGL008508] Photinia melanocarpa - Gaylussacia baccata / Carex pensylvanica Shrubland 340



III.C.2.N.e. Saturated mixed evergreen - cold-deciduous shrubland 342

A.1880 Alnus serrulata - Salix sericea - Rhododendron (catawbiense, maximum) Saturated Shrubland Alliance 342

[CEGL003915] Alnus serrulata - Kalmia carolina - Rhododendron catawbiense - Spiraea alba / Carex folliculata - Lilium grayi Shrubland 342

[CEGL003914] Alnus serrulata - Rhododendron arborescens / Sarracenia oreophila - Rhynchospora rariflora Shrubland 345

[CEGL003916] Alnus serrulata - Rhododendron viscosum - Rhododendron maximum / Juncus gymnocarpus - Chelone cuthbertii Shrubland 347

[CEGL003918] Alnus serrulata - Viburnum nudum var. nudum - Chamaedaphne calyculata / Woodwardia areolata - Sarracenia rubra ssp. 350

jonesii Shrubland 350

[CEGL004252] Alnus serrulata / Sanguisorba canadensis - Calamagrostis canadensis Shrubland 353

[CEGL003917] Alnus serrulata / Sanguisorba canadensis - Parnassia grandifolia - Helenium brevifolium Shrubland 354

[CEGL003913] Rhododendron (maximum, catawbiense) - Ilex collina - Salix sericea / Carex trisperma - Eriophorum virginicum Shrubland 356

[CEGL003849] Rhododendron maximum / Sphagnum spp. Shrubland 358



IV. Dwarf-shrubland 359

IV.A.1.N.a. Cespitose needle-leaved or microphyllous evergreen dwarf-shrubland 359

A.1063 Leiophyllum buxifolium Dwarf-shrubland Alliance 359

[CEGL003951] Leiophyllum buxifolium Dwarf-shrubland 360



V. Herbaceous Vegetation 362

V.A.1.N.c. Medium-tall bunch tropical or subtropical grassland 362

A.1150 Schizachyrium rhizomatum Herbaceous Alliance 362

[CEGL003962] Schizachyrium rhizomatum - Aristida purpurascens var. tenuispica - Eragrostis spectabilis Herbaceous Vegetation 362



V.A.1.N.g. Seasonally flooded tropical or subtropical grassland 363

A.1157 Cladium mariscus ssp. jamaicense Seasonally Flooded Tropical Herbaceous Alliance 363

[CEGL003969] Cladium mariscus ssp. jamaicense - Bacopa caroliniana Herbaceous Vegetation 364

[CEGL003970] Cladium mariscus ssp. jamaicense / Algal periphyton Herbaceous Vegetation 365

A.1158 Eleocharis cellulosa - (Rhynchospora tracyi) Seasonally Flooded Herbaceous Alliance 366

[CEGL003973] Eleocharis cellulosa - Rhynchospora tracyi / (Algal Periphyton) Herbaceous Vegetation 367

[CEGL003972] Eleocharis cellulosa Herbaceous Vegetation 368

A.1159 Eleocharis interstincta - Sagittaria lancifolia Seasonally Flooded Herbaceous Alliance 369

[CEGL003975] Eleocharis interstincta - Pontederia cordata - Crinum americanum Herbaceous Vegetation 369



A.1161 Muhlenbergia filipes Seasonally Flooded Tropical Herbaceous Alliance 370

[CEGL003978] Muhlenbergia filipes - Rhynchospora microcarpa - Centella erecta Herbaceous Vegetation 371



A.1162 Panicum hemitomon Seasonally Flooded Tropical Herbaceous Alliance 372

[CEGL003980] Panicum hemitomon Tropical Herbaceous Vegetation 372



A.1164 Rhynchospora microcarpa Seasonally Flooded Herbaceous Alliance 373

[CEGL003981] Rhynchospora microcarpa Herbaceous Vegetation 374



A.1165 Schoenus nigricans Seasonally Flooded Herbaceous Alliance 375

[CEGL003984] Schoenus nigricans Herbaceous Vegetation 375



V.A.1.N.h. Semipermanently flooded tropical or subtropical grassland 376

A.1173 Schoenoplectus tabernaemontani Semipermanently Flooded Tropical Herbaceous Alliance 376

[CEGL003986] Schoenoplectus tabernaemontani Tropical Herbaceous Vegetation 376



A.1175 Typha domingensis Semipermanently Flooded Tropical Herbaceous Alliance 377

[CEGL003988] Typha domingensis - Pontederia cordata Herbaceous Vegetation 378



A.1176 Zizaniopsis miliacea Semipermanently Flooded Subtropical Herbaceous Alliance 379

[CEGL003989] Zizaniopsis miliacea Subtropical Herbaceous Vegetation 379



V.A.1.N.i. Tidal tropical or subtropical grassland 380

A.1882 Distichlis spicata Tidal Herbaceous Alliance 380

[CEGL007694] Distichlis spicata - (Sporobolus virginicus) Herbaceous Vegetation 380



V.A.5.N.a. Tall sod temperate grassland 382

A.1198 Schizachyrium scoparium - Sorghastrum nutans Herbaceous Alliance 382

[CEGL004999] Schizachyrium scoparium - Sorghastrum nutans - Aletris farinosa - Packera paupercula Herbaceous Vegetation 383



A.1199 Uniola paniculata Temperate Herbaceous Alliance 384

[CEGL004040] Uniola paniculata - Hydrocotyle bonariensis Herbaceous Vegetation 385



V.A.5.N.e. Short sod temperate or subpolar grassland 387

A.1277 Carex biltmoreana Herbaceous Alliance 387

[CEGL004523] Carex biltmoreana - Pycnanthemum spp. - Krigia montana Herbaceous Vegetation 387



A.1278 Carex pensylvanica Herbaceous Alliance 389

[CEGL004094] Carex pensylvanica Herbaceous Vegetation 389



A.1280 Danthonia compressa Herbaceous Alliance 390

[CEGL004242] Danthonia compressa - (Sibbaldiopsis tridentata) Herbaceous Vegetation 391



V.A.5.N.j. Temporarily flooded temperate or subpolar grassland 395

A.1340 Carex torta Temporarily Flooded Herbaceous Alliance 395

[CEGL004103] Carex torta Herbaceous Vegetation 396



V.A.5.N.k. Seasonally flooded temperate or subpolar grassland 398

A.1369 Cladium mariscus ssp. jamaicense Seasonally Flooded Temperate Herbaceous Alliance 398

[CEGL004949] Cladium mariscus ssp. jamaicense - Woodwardia virginica Herbaceous Vegetation 399



A.1386 Scirpus cyperinus Seasonally Flooded Herbaceous Alliance 400

[CEGL004134] Scirpus cyperinus - Dulichium arundinaceum / Sphagnum spp. Herbaceous Vegetation 401



V.A.5.N.m. Saturated temperate or subpolar grassland 403

A.1450 Carex (atlantica, echinata) - Eriophorum virginicum - Rhynchospora capitellata - Solidago patula Saturated Herbaceous 403

Alliance 403

[CEGL004156] Carex (atlantica, echinata, leptalea, lurida) - Solidago patula Herbaceous Vegetation 404

[CEGL004157] Carex atlantica - Rhynchospora alba - Parnassia asarifolia / Sphagnum warnstorfii Herbaceous Vegetation 405

[CEGL004158] Carex atlantica - Solidago patula var. patula - Lilium grayi / Sphagnum bartlettianum Herbaceous Vegetation 407



A.1898 Carex ruthii - Carex gynandra Saturated Herbaceous Alliance 410

[CEGL007877] Calamagrostis cainii - Carex ruthii - Parnassia asarifolia / Sphagnum spp. Herbaceous Vegetation 410

[CEGL007697] Carex gynandra - Platanthera clavellata - Drosera rotundifolia - Carex ruthii - Carex atlantica / Sphagnum spp. Herbaceous 412

Vegetation 412



A.1447 Cladium mariscoides Saturated Herbaceous Alliance 415

[CEGL004167] Cladium mariscoides - Sanguisorba canadensis / Sphagnum subsecundum Herbaceous Vegetation 415



A.2016 Symphyotrichum puniceum - Vernonia noveboracensis - Solidago (patula, rugosa) Saturated Herbaceous Alliance 417

[CEGL008438] Glyceria striata - Carex gynandra - Chelone glabra - Symphyotrichum puniceum / Sphagnum spp. Herbaceous Vegetation 418



V.A.6.N.q. Bedrock temperate or subpolar grassland with a sparse tree layer 419

A.3014 (Fraxinus americana, Juniperus virginiana) / Carex pensylvanica - Schizachyrium scoparium Wooded Herbaceous 419

Alliance 419

[CEGL008529] Fraxinus americana / Physocarpus opulifolius / Carex pensylvanica - Allium cernuum - (Phacelia dubia) Wooded Herbaceous 420

Vegetation 420

V.A.7.N.d. Medium-tall temperate or subpolar grassland with a sparse broad-leaved evergreen shrub layer 422

A.1520 Schizachyrium scoparium Shrub Herbaceous Alliance 422

[CEGL004238] Kalmia latifolia / Schizachyrium scoparium / Cladonia spp. Shrub Herbaceous Vegetation 423



V.B.1.N.c. Semipermanently flooded tropical or subtropical perennial forb vegetation 424

A.1588 Sagittaria lancifolia Semipermanently Flooded Herbaceous Alliance 424

[CEGL004262] Sagittaria lancifolia Herbaceous Vegetation 425



A.1589 Thalia geniculata Semipermanently Flooded Herbaceous Alliance 426

[CEGL004264] Thalia geniculata - Pontederia cordata Herbaceous Vegetation 426



V.B.2.N.b. Low temperate or subpolar perennial forb vegetation 427

A.1905 (Hydrangea spp., Philadelphus spp.) / Heuchera spp. Herbaceous Alliance 427

[CEGL008435] Heuchera villosa - Asplenium trichomanes - Thalictrum clavatum / Conocephalum conicum Herbaceous Vegetation 428



A.1621 Saxifraga michauxii Herbaceous Alliance 429

[CEGL004278] Saxifraga michauxii - Carex misera - Calamagrostis cainii Herbaceous Vegetation 431

[CEGL004279] Saxifraga michauxii - Carex misera - Danthonia spicata - Krigia montana Herbaceous Vegetation 433

[CEGL004277] Saxifraga michauxii - Carex misera - Oclemena acuminata - Solidago glomerata Herbaceous Vegetation 435

[CEGL004524] Saxifraga michauxii Herbaceous Vegetation 436

[CEGL004074] Schizachyrium scoparium - Saxifraga michauxii - Coreopsis major Herbaceous Vegetation 438



A.1985 Selaginella (tortipila, rupestris) Herbaceous Alliance 439

[CEGL004991] Selaginella rupestris - Schizachyrium scoparium - Hylotelephium telephioides - Allium cernuum Herbaceous Vegetation 440

[CEGL007690] Selaginella rupestris - Schizachyrium scoparium - Hypericum gentianoides - Bulbostylis capillaris Herbaceous Vegetation 442

[CEGL004283] Selaginella tortipila - Krigia montana - Houstonia longifolia Herbaceous Vegetation 444



V.B.2.N.f. Saturated temperate perennial forb vegetation 446

A.1688 Diphylleia cymosa - Saxifraga micranthidifolia Saturated Herbaceous Alliance 446

[CEGL004296] Diphylleia cymosa - Saxifraga micranthidifolia - Laportea canadensis Herbaceous Vegetation 447



A.1690 Impatiens (capensis, pallida) - Monarda didyma Saturated Herbaceous Alliance 449

[CEGL004293] Impatiens (capensis, pallida) - Monarda didyma - Rudbeckia laciniata var. humilis Herbaceous Vegetation 449



A.1696 Vittaria appalachiana - Heuchera parviflora Saturated Herbaceous Alliance 451

[CEGL004302] Vittaria appalachiana - Heuchera parviflora var. parviflora - Houstonia serpyllifolia / Plagiochila spp. Herbaceous Vegetation 452



V.C.1.N.a. Permanently flooded tropical or subtropical hydromorphic-rooted vegetation 456

A.1720 Najas guadalupensis - Ceratophyllum demersum - Utricularia inflata Permanently Flooded Herbaceous Alliance 456

[CEGL004313] Najas guadalupensis - Ceratophyllum demersum - Utricularia inflata Herbaceous Vegetation 456



A.1723 Nuphar lutea Permanently Flooded Tropical Herbaceous Alliance 457

[CEGL004315] Nuphar lutea ssp. advena / Chara sp. Tropical Herbaceous Vegetation 457



VI. Nonvascular Vegetation 458

VI.B.1.N.b. Alpine to submontane temperate or subpolar lichen vegetation 458

A.1826 Lasallia papulosa - Umbilicaria caroliniana Nonvascular Alliance 458

[CEGL004386] Lasallia papulosa - Umbilicaria caroliniana Nonvascular Vegetation 459



VI.C.1.N.a. Seasonally flooded tropical or subtropical alga vegetation 460

A.1830 Algal periphyton Seasonally Flooded Nonvascular Alliance 460

[CEGL004390] Algal periphyton Nonvascular Vegetation 460



VII. Sparse Vegetation 461

VII.A.1.N.a. Cliffs with sparse vascular vegetation 461

A.1831 Asplenium montanum Sparsely Vegetated Alliance 461

[CEGL004980] Asplenium montanum - Heuchera villosa Felsic Cliff Sparse Vegetation 462



A.1832 Asplenium ruta-muraria - Pellaea atropurpurea Sparsely Vegetated Alliance 464

[CEGL004476] Asplenium ruta-muraria - Pellaea atropurpurea Sparse Vegetation 464



A.1837 Physocarpus opulifolius Sparsely Vegetated Alliance 466

[CEGL004759] Physocarpus opulifolius / Campanula divaricata - Tradescantia subaspera - (Packera plattensis) Sparse Vegetation 467



VII.B.1.N.a. Lowland or submontane talus/scree 468

A.1847 Lowland Talus Sparsely Vegetated Alliance 468

[CEGL004454] Parthenocissus quinquefolia / Dicentra eximia Sparse Vegetation 468



VII.C.1.N.b. Dunes with sparse woody vegetation 469

A.1858 Vitis rotundifolia - Parthenocissus quinquefolia / Triplasis purpurea Unstabilized Dune Sparsely Vegetated Alliance 469

[CEGL004397] Vitis rotundifolia / Triplasis purpurea - Panicum amarum - Schizachyrium littorale Mid-Atlantic Coastal Medaño Sparse Vegetation 470



VII.C.2.N.a. Sand flats 471

A.1860 Cakile constricta Sparsely Vegetated Alliance 471

[CEGL004398] Cakile constricta Sparse Vegetation 471





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