Geobotanically, Arkansas belongs to the North American Atlantic Region.

A Acer negundo - Boxelder Acer saccharum - Sugar maple Amorpha ouachitensis - Ouachita leadplant Amorpha paniculata - Panicled indigobush Amsonia hubrichtii - Arkansas bluestar Astragalus soxmaniorum - Soxman's milkvetch

B Betula nigra - River birch Betula pendula - White birch (non-native)

C

Calamagrostis porteri ssp. insperata - Ofer hollow reed grass Calamovilfa arcuata - A sandgrass Carex arkansana - Arkansas sedge Carex decomposita Carex latebracteata - Waterfall's sedge Carex shinnersii - Shinner's sedge Carex timida - Timid sedge Carya myristiciformis - Nutmeg hickory Carya ovata - Shagbark hickory Carya tomentosa - Mockernut hickory Castanea pumila var. ozarkensis - Ozark chinquapin Chelone obliqua var. speciosa - Rose turtlehead Cornus florida - Flowering dogwood Cunila origanoides - American dittany, mountain oregano Cyperus grayoides - Umbrella sedge Cypripedium kentuckiense - Southern lady's-slipper

D Delphinium newtonianum - Moore's larkspur Delphinium treleasei - Trelease's larkspur Diospyros virginiana - American persimmon Dodecatheon frenchii - French's shootingstar Draba aprica - Open-ground whitlow-grass

E Echinacea paradoxa - Bush's yellow coneflower Echinacea sanguinea - Sanguine purple coneflower Eriocaulon koernickianum - Dwarf pipewort

F Fothergilla major - Witch-alder

G Galium arkansanum - Arkansas bedstraw

H

Hamamelis vernalis - Ozark witch hazel Harperella nodosa (syn. Ptilimnium nodosum) - Harperella Helianthus occidentalis ssp. plantagineus - Shinner's sunflower Heuchera villosa var. arkansana - Arkansas alumroot Houstonia ouachitana - Ouachita bluet Hydrophyllum brownei - Browne's waterleaf

I

J Juglans nigra - Black walnut Juniperus virginiana - Eastern redcedar

K

L

Leitneria floridana - Corkwood Liatris compacta - Ouachita blazing star Liquidambar styraciflua - Slender silhouette sweetgum Lobelia siphilitica - Great blue lobelia Lysimachia quadriflora

M Malus coronaria (Pyrus coronaria) - Sweet crabapple (Arkansas State Flower) Mespilus canescens - Stern's medlar Minuartia godfreyi - Godfrey's sandwort

N Neviusia alabamensis - Alabama snow-wreath

O Oenothera heterophylla ssp. orientalis - Alabama evening primrose Oenothera pilosella ssp. sessilis - Prairie evening primrose

P Pinus echinata - Shortleaf pine Platanus occidentalis - American sycamore Polymnia cossatotensis - Cossatot leafcup Prunus serotina - Black cherry Prunus virginiana - Chokecherry Prunus americana - Wild plum

Q Quercus acerifolia - Maple-leaved oak Quercus alba - White oak Quercus arkansana - Arkansas oak Quercus coccinea - Scarlet oak Quercus falcata - Southern red oak Quercus imbricaria - Shingle oak Quercus incana - Bluejack oak Quercus laurifolia - Swamp laurel oak Quercus lyrata - Overcup oak Quercus macrocarpa - Bur oak Quercus margaretta - Sand post oak Quercus marilandica - Blackjack oak Quercus michauxii - Swamp chestnut oak Quercus muehlenbergii - Chinkapin oak Quercus nigra - Water oak Quercus pagoda - Cherrybark oak

R Rhus aromatica - Aromatic sumac Rhus copallina - Winged sumac Rhus glabra - Smooth sumac

S Salix nigra - Black willow Sassafras albidum - Sassafras Schisandra glabra - Climbing magnolia Schoenolirion wrightii - Texas sunnybell Scutellaria bushii - Bush's skullcap Silene ovata - Ovate-leaf catchfly Silene regia - Royal catchfly Solidago ouachitensis - Ouachita goldenrod Streptanthus maculatus ssp. obtusifolius - Clasping jewelflower Streptanthus squamiformis - Pineoak jewelflower

T Thalictrum arkansanum - Arkansas meadow-rue Tradescantia longipes - Dwarf spiderwort Tradescantia ozarkana - Ozark spiderwort Trillium pusillum var. ozarkanum - Ozark least trillium Trillium viridescens - Ozark trillium

U Ulmus alata - Winged elm Ulmus americana - American elm Ulmus rubra - Slippery elm Ulmus thomasi - Rock elm

V

Valerianella nuttallii - Nuttall corn-salad Valerianella palmeri - Palmer's corn-salad Valerianella ozarkana - Ozark corn-salad Vernonia arkansana - Arkansas ironweed Vernonia lettermannii - Narrowleaf ironweed

W

X

Y

Z

References