TARGET SPECIES
Last Update: 8/21/2008
Download the list as a Microsof Excel File here.
| Species name | Common Name | Family | USDA Code | Assigned |
| Acalypha gracilens | Slender Three-Seeded Mercury | Euphorbiaceae | ACGR2 | Jeff Hansen |
| Acalypha rhomboidea | Three-Seeded Mercury | Euphorbiaceae | ACRH | Jeff Hansen |
| Acer nigrum | Black Maple | Aceraceae | ACNI5 | |
| Acer saccharinum | silver maple | Aceraceae | ACSA2 | Richard Gitar |
| Acorus americanus | Calamus | Acoraceae | ACAM | |
| Acorus calamus | Single-Vein Sweetflag | Acoraceae | ACCA4 | |
| Actaea pachypoda | White Baneberry | Ranunculaceae | ACPA | Richard Gitar |
| Actaea racemosa | Black Bugbane | Ranunculaceae | ACRA7 | |
| Adlumia fungosa | Allegheny-Vine | Fumariaceae | ADFU | |
| Aesculus flava | Yellow Buckeye | Hippocastanaceae | AEFL | |
| Aesculus glabra | Ohio buckeye | Hippocastanaceae | AEGL | |
| Aesculus marylandica | Buckeye | Hippocastanaceae | AEMA2 | |
| Agalinis gattingeri | Round-Stemmed False Foxglove | Scrophulariaceae | AGGA | |
| Agrimonia microcarpa | Small-Fruit Grooveburr | Rosaceae | AGMI2 | |
| Agrimonia pubescens | Soft Agrimony | Rosaceae | AGPU | Jeff Hansen |
| Agrimonia rostellata | Woodland Agrimony | Rosaceae | AGRO3 | |
| Agrostis elliottiana | Awned Bent Grass | Poaceae | AGEL4 | |
| Aletes acaulis | stemless Indian parsley | Apiaceae | ALAC2 | Denise Wilson & Stan Smookler |
| Allium burdickii | Narrow-Leaf Wild Leek | Liliaceae | ALBU2 | |
| Allium tricoccum | Ramp | Liliaceae | ALTR3 | Liana May |
| Alopecurus carolinianus | Annual Foxtail | Poaceae | ALCA4 | |
| Amaranthus arenicola | Sandhill Amaranth | Amaranthaceae | AMAR | Jeff Hansen |
| Amaranthus retroflexus | redroot amaranth | Amaranthaceae | AMRE | Jeff Hansen |
| Ambrosia bidentata | Lanceleaf Ragweed | Asteraceae | AMBI2 | |
| Ambrosia grayi | woollyleaf burr ragweed | Asteraceae | AMGR5 | |
| Ambrosia helenae | Burr-Ragweed | Asteraceae | AMHE3 | |
| Amelanchier humilis | Low Service-Berry | Rosaceae | AMHU2 | |
| Amelanchier stolonifera | Running Service-Berry | Rosaceae | AMST80 | Richard Gitar |
| Ammannia auriculata | eared redstem | Lythraceae | AMAU2 | Jeff Hansen |
| Ammannia latifolia | pink redstem | Lythraceae | AMLA3 | |
| Ampelopsis cordata | Heart-Leaf Peppervine | Vitaceae | AMCO2 | |
| Amsinckia lycopsoides | Bugloss Fiddleneck | Boraginaceae | AMLY | |
| Amsonia tabernaemontana | Eastern Bluestar | Apocynaceae | AMTA2 | |
| Andropogon gyrans | Elliot's Bluestem | Poaceae | ANGYG | |
| Andropogon hallii | Hall's Bluestem | Poaceae | ANHA | Steve Winter |
| Androsace occidentalis | Androsace | Primulaceae | ANOC2 | Stan Smookler & Denise Wilson |
| Anemone quinquefolia | Wood Anemone | Ranunculaceae | ANQU | Richard Gitar |
| Angelica venenosa | Wood Angelica | Apiaceae | ANVE | |
| Antennaria howellii | Smal Pussytoes | Asteraceae | ANHON | |
| Antennaria pulcherrima | showy pussytoes | Asteraceae | ANPU | |
| Antennaria solitaria | Single-Head Pussytoes | Asteraceae | ANSO | |
| Apocynum floribundum | Indian-Hemp | Apocynaceae | APFL | John Giammario |
| Aquilegia canadensis | Red Columbine | Ranunculaceae | AQCA | Jeff Hansen |
| Arabis canadensis | Sicklepod | Brassicaceae | ARCA | Jeff Hansen |
| Arabis drummondii | Canadian Rockcress | Brassicaceae | ARDR | |
| Arabis laevigata | Smooth Rockcress | Brassicaceae | ARLA | |
| Arabis lignifera | desert rockcress | Brassicaceae | ARLI | Denise Wilson/Stanley Smookler |
| Arabis lyrata | Lyre-Leaved Rock Cress | Brassicaceae | ARLY2 | Jen & Tug @ Folius Consulting |
| Arabis shortii | Short's Rockcress | Brassicaceae | ARSH2 | |
| Aralia racemosa | American Spikenard | Araliaceae | ARRA | Richard Gitar |
| Arceuthobium vaginatum | pineland dwarf mistletoe | Viscaceae | ARVA | Denise Wilson and Stan Smookler |
| Arisaema dracontium | Greendragon | Araceae | ARDR3 | Cindy Ramseyer |
| Arisaema triphyllum | Jack-in-the-Pulpit | Araceae | ARTR | Jeff Hansen |
| Aristida basiramea | Forked-Tip Three-Awn Grass | Poaceae | ARBA2 | Jeff Hansen |
| Aristida desmantha | Deam's Three-Seed-Mercury | Poaceae | ACDE4 | |
| Aristida dichotoma | Curtiss Three Awn Grass | Poaceae | ARDIC | |
| Aristida dichotoma | Church-Mouse Three-Awn | Poaceae | ARDI4 | Jeff Hansen |
| Aristida ramosissima | Slender Three Awn | Poaceae | ARRA2 | |
| Arnica fulgens | foothill arnica | Asteraceae | ARFU3 | Denise Wilson & Stan Smookler |
| Arnica rydbergii | Rydberg's arnica | Asteraceae | ARRY | |
| Arnoglossum reniforme | Great Indian-Plantain | Asteraceae | ARRE6 | Hilary and Dee Ann |
| Artemisia carruthii | Carruth's sagewort | Asteraceae | ARCA14 | Jeff Hansen |
| Artemisia serrata | Saw-Toothed Sagebrush | Asteraceae | ARSE4 | |
| Arundinaria gigantea | Giant Cane | Poaceae | ARGIG | |
| Asclepias amplexicaulis | Sand Milkweed | Asclepiadaceae | ASAM | Jeff Hansen |
| Asclepias exaltata | Poke Milkweed | Asclepiadaceae | ASEX | Tania Hanline |
| Asclepias lanuginosa | Woolly Milkweed | Asclepiadaceae | ASLA3 | |
| Asclepias perennis | Aquatic Milkweed | Asclepiadaceae | ASPE | |
| Asclepias pumila | plains milkweed | Asclepiadaceae | ASPU | Christy Caswell |
| Asclepias purpurascens | Purple Milkweed | Asclepiadaceae | ASPU2 | Jeff Hansen |
| Asclepias quadrifolia | Four-Leaf Milkweed | Asclepiadaceae | ASQU | |
| Asclepias stenophylla | slimleaf milkweed | Asclepiadaceae | ASST | Jeff Hansen |
| Asclepias variegata | Variegated Milkweed | Asclepiadaceae | ASVA | |
| Asimina triloba | Common Pawpaw | Annonaceae | ASTR | |
| Astragalus distortus | Bent Milk Vetch | Fabaceae | ASDI4 | |
| Astragalus eucosmus | elegant milkvetch | Fabaceae | ASEU2 | Denise Wilson and Stan Smookler |
| Astragalus gracilis | slender milkvetch | Fabaceae | ASGR3 | |
| Astragalus laxmannii | Laxmann's milkvetch | Fabaceae | ASLA27 | Denise Wilson |
| Astragalus lotiflorus | lotus milkvetch | Fabaceae | ASL04 | |
| Astragalus missouriensis | Missouri milkvetch | Fabaceae | ASMI10 | Jeff Hansen |
| Astragalus parryi | Parry's milkvetch | Fabaceae | ASPA13 | Stanley Smookler and Denise |
| Astragalus plattensis | Platte River milkvetch | Fabaceae | ASPL2 | |
| Astragalus shortianus | Short's milkvetch | Fabaceae | ASSH3 | Denise Wilson & Stan Smookler |
| Astragalus tenellus | looseflower milkvetch | Fabaceae | ASTE5 | Denise Wilson/Stan Smookler |
| Atriplex argentea | Silverscale | Chenopodiaceae | ATAR2 | |
| Aureolaria flava | Smooth False Foxglove | Scrophulariaceae | AUFL | Cindy Ramseyer |
| Aureolaria grandiflora | Large-Flower Yellow False Foxglove | Scrophulariaceae | AUGRP | |
| Aureolaria pedicularia | Clammy False Foxglove | Scrophulariaceae | AUPE2 | |
| Baptisia serenae | Wild Indigo | Fabaceae | BASE3 | |
| Bergia texana | Texas Bergia | Elatinaceae | BETE | |
| Betula pumila | Bog Birch | Betulaceae | BEPU4 | Stan Smookler & Denise Wilson |
| Betula purpusii | Birch | Betulaceae | BEPU3 | |
| Betula sandbergii | Birch | Betulaceae | BESA | |
| Bidens connata | Purple-Stem Beggarticks | Asteraceae | BICO5 | Jeff Hansen |
| Bidens coronata | Crowned Beggarticks | Asteraceae | BICO | Joshua Skolnick |
| Bidens discoidea | Small Beggarticks | Asteraceae | BIDI | Richard Gitar |
| Bidens tenuisecta | slimlobe beggarticks | Asteraceae | BITE | Densie Wilson/Stan Smookler |
| Bignonia capreolata | Crossvine | Bignoniaceae | BICA | |
| Boltonia diffusa | False Aster | Asteraceae | BODI | |
| Brasenia schreberi | Watershield | Cabombaceae | BRSC | |
| Bromus nottowayanus | Nottoway Valley Brome | Poaceae | BRNO | |
| Bulbostylis capillaris | Hair Sedge | Cyperaceae | BUCA2 | |
| Callirhoe digitata | Fringed Poppy Mallow | Malvaceae | CADI2 | |
| Callirhoe triangulata | Clustered Poppy Mallow | Malvaceae | CATR | |
| Callitriche hermaphroditica | Autumn Water-Starwort | Callitrichaceae | CAHE2 | |
| Callitriche heterophylla | Green Water Starwort | Callitrichaceae | CAHEH | |
| Callitriche terrestris | Terrestrial Water-Starwort | Callitrichaceae | CATE19 | |
| Calycocarpum lyonii | Cupseed | Menispermaceae | CALY2 | |
| Calylophus serrulatus | Yellow Sundrops | Onagraceae | CASE12 | Christy Caswell |
| Calystegia silvatica | Short-Stalk False Bindweed | Convolvulaceae | CASIF | |
| Calystegia spithamaea | Dwarf Bindweed | Convolvulaceae | CASP14 | Jen & Tug @ Folius Consulting |
| Campanula aparinoides | Marsh Bellflower | Campanulaceae | CAAP2 | Joshua Skolnick |
| Cardamine bulbosa | Bulbous Bittercress | Brassicaceae | CABU3 | |
| Cardamine diphylla | Crinkleroot | Brassicaceae | CADI10 | |
| Cardamine douglassii | Limestone Bittercress | Brassicaceae | CADO | Joshua Skolnick |
| Cardamine parviflora | Sand Bittercress | Brassicaceae | CAPAA2 | |
| Cardamine pensylvanica | Quaker Bittercress | Brassicaceae | CAPE3 | Josh Sulman |
| Carex aggregata | Glomerate Sedge | Cyperaceae | CAAG2 | Jeff Hansen |
| Carex albicans | White-Tinge Sedge | Cyperaceae | CAAL25 | Jeff Hansen |
| Carex albursina | White Bear Sedge | Cyperaceae | CAAL11 | |
| Carex amphibola | Eastern Narrow-Leaf Sedge | Cyperaceae | CAAM8 | |
| Carex arctata | drooping woodland sedge | Cyperaceae | CAAR3 | Josh Sulman |
| Carex atherodes | Wheat Sedge | Cyperaceae | CAAT2 | Jen & Tug @ Folius Consulting |
| Carex atlantica | Prickly Bog Sedge | Cyperaceae | CAAT4 | |
| Carex baileyi | Bailey's Sedge | Cyperaceae | CABA7 | |
| Carex bebbii | Beautiful Sedge | Cyperaceae | CABE2 | Margo Milde |
| Carex brunnescens | brownish sedge | Cyperaceae | CABR15 | Pati Vitt |
| Carex canescens | silvery sedge | Cyperaceae | CACA11 | Tania Hanline |
| Carex careyana | Carey's Sedge | Cyperaceae | CACA14 | |
| Carex caroliniana | Carolina Sedge | Cyperaceae | CACA15 | |
| Carex cephaloidea | Thin-Leaf Sedge | Cyperaceae | CACE2 | |
| Carex cephalophora | Oval-Leaf Sedge | Cyperaceae | CACE | Jeff Hansen |
| Carex conoidea | Open-Field Sedge | Cyperaceae | CACO14 | |
| Carex corrugata | Prune-Fruit Sedge | Cyperaceae | CACO22 | |
| Carex cumulata | Clustered Sedge | Cyperaceae | CACU3 | |
| Carex deamii | Sedge | Cyperaceae | CADE13 | |
| Carex deweyana | Round-Fruit Shor-Scaled Sedge | Cyperaceae | CADE9 | Tania Hanline |
| Carex digitalis | Slender Woodland Sedge | Cyperaceae | CADI5 | |
| Carex disperma | softleaf sedge | Cyperaceae | CADI6 | Denise Wilson |
| Carex eburnea | Bristle-Leaf Sedge | Cyperaceae | CAEB2 | |
| Carex emoryi | Emory Sedge | Cyperaceae | CAEM2 | |
| Carex flaccosperma | Thin-Fruit Sedge | Cyperaceae | CAFL3 | |
| Carex formosa | handsome sedge | Cyperaceae | CAFO4 | |
| Carex glaucodea | Blue Sedge | Cyperaceae | CAGL6 | Cindy Ramseyer |
| Carex granularis | Meadow Sedge | Cyperaceae | CAGR3 | |
| Carex hirtifolia | Pubescent Sedge | Cyperaceae | CAHI5 | Cindy Ramseyer |
| Carex hitchcockiana | Hitchcock's Sedge | Cyperaceae | CAHI8 | Tania Hanline |
| Carex hyalinolepis | Shoreline Sedge | Cyperaceae | CAHY3 | Jeff Hansen |
| Carex inops | Long-Stolon Sedge | Cyperaceae | CAINH2 | Grace Kostel |
| Carex intumescens | greater bladder sedge | Cyperaceae | CAIN12 | Pati Vitt |
| Carex lacustris | River Sedge | Cyperaceae | CALA16 | Richard Gitar |
| Carex laevivaginata | Smooth-Sheath Sedge | Cyperaceae | CALA14 | Tania Hanline |
| Carex lapponica | Lapland Sedge | Cyperaceae | CALA15 | |
| Carex laxiculmis | Spreading Sedge | Cyperaceae | CALA18 | |
| Carex laxiflora | Broad Loose-Flower Sedge | Cyperaceae | CALAL5 | |
| Carex leavenworthii | Leavenworth's Sedge | Cyperaceae | CALE6 | Jeff Hansen |
| Carex leptalea | Bristly-Stalk Sedge | Cyperaceae | CALE10 | Tania Hanline |
| Carex longii | Long's Sedge | Cyperaceae | CALO5 | Tania Hanline |
| Carex lupuliformis | False Hop Sedge | Cyperaceae | CALU3 | |
| Carex muehlenbergii | Muhlenberg's Sedge | Cyperaceae | CAMU4 | |
| Carex pedunculata | Long-Stalk Sedge | Cyperaceae | CAPE4 | Jen & Tug @ Folius Consulting |
| Carex pensylvanica | Pennsylvania Sedge | Cyperaceae | CAPE6 | Cindy Ramseyer |
| Carex platyphylla | Broad-Leaf Sedge | Cyperaceae | CAPL5 | |
| Carex praticola | Northern Meadow Sedge | Cyperaceae | CAPR7 | |
| Carex projecta | Necklace Sedge | Cyperaceae | CAPR9 | Tania Hanline |
| Carex retroflexa | Reflexed Sedge | Cyperaceae | CARE9 | Cindy Ramseyer |
| Carex richardsonii | Richardson Sedge | Cyperaceae | CARI | Jen & Tug @ Folius Consulting |
| Carex socialis | Low Woodland Sedge | Cyperaceae | CASO | |
| Carex sparganioides | Burr-Reed Sedge | Cyperaceae | CASP3 | Jeff Hansen |
| Carex sterilis | Dioecious Sedge | Cyperaceae | CAST16 | |
| Carex styloflexa | Bent Sedge | Cyperaceae | CAST9 | |
| Carex suberecta | Prairie Straw Sedge | Cyperaceae | CASU5 | |
| Carex subimpressa | Sedge | Cyperaceae | CASU14 | |
| Carex tetanica | Rigid Sedge | Cyperaceae | CATE6 | Tania Hanline |
| Carex trichocarpa | Hairy-Fruit Sedge | Cyperaceae | CATR8 | |
| Carex umbellata | Parasol Sedge | Cyperaceae | CAUM4 | Jeff Hansen |
| Carex virescens | Ribbed Sedge | Cyperaceae | CAVI4 | |
| Carya lecontei | Hickory | Juglandaceae | CALE13 | |
| Carya nussbaumeri | Hickory | Juglandaceae | CANU8 | |
| Carya schneckii | Hickory | Juglandaceae | CASC16 | |
| Castilleja coccinea | Indian Paintbrush | Scrophulariaceae | CACO17 | Joshua Skolnick |
| Castilleja integra | wholeleaf Indian paintbrush | Scrophulariaceae | CAIN14 | Stan Smookler & Denise Wilson |
| Catalpa bignonioides | Southern Catalpa | Bignoniaceae | CABI8 | |
| Caulophyllum thalictroides | Blue Cohosh | Berberidaceae | CATH2 | Liana May |
| Cerastium nutans | Nodding Mouse-Ear Chickweed | Caryophyllaceae | CENU2 | |
| Ceratophyllum demersum | Coon's-Tail | Ceratophyllaceae | CEDE4 | Richard Gitar |
| Ceratophyllum echinatum | Spineless Hornwort | Ceratophyllaceae | CEEC2 | |
| Chaerophyllum procumbens | Spreading Chervil | Apiaceae | CHPRP | Jeff Hansen |
| Chamaelirium luteum | Fairywand | Liliaceae | CHLU | |
| Chamaesaracha coniodes | gray five eyes | Solanaceae | CHCO | |
| Chamaesyce missurica | prairie sandmat | Euphorbiaceae | CHMI8 | Jeff Hansen |
| Chamaesyce geyeri | Geyer's Sandmat | Euphorbiaceae | CHGEG | Jeff Hansen |
| Chamaesyce glyptosperma | Rib-Seed Sandmat | Euphorbiaceae | CHGL13 | Jeff Hansen |
| Chamaesyce humistrata | Spreading Sandmat | Euphorbiaceae | CHHU3 | Jeff Hansen |
| Chamaesyce polygonifolia | Seaside Spurge | Euphorbiaceae | CHPO6 | |
| Chamaesyce prostrata | Prostrate Sandmat | Euphorbiaceae | CHPR6 | Jeff Hansen |
| Chamaesyce serpyllifolia | Thyme-Leaf Sandmat | Euphorbiaceae | CHSES | Jeff Hansen |
| Chamaesyce stictospora | slimseed sandmat | Euphorbiaceae | CHST8 | Jeff Hansen |
| Chamaesyce vermiculata | Worm-Seed Sandmat | Euphorbiaceae | CHVE5 | |
| Chelone glabra | White Turtlehead | Scrophulariaceae | CHGL2 | Richard Gitar |
| Chelone obliqua | Red Turtlehead | Scrophulariaceae | CHOBS | |
| Chenopodium foggii | Fogg's Goosefoot | Chenopodiaceae | CHFO3 | |
| Chenopodium pallescens | Slim-Leaf Goosefoot | Chenopodiaceae | CHPA5 | |
| Chenopodium pratericola | Desert Goosefoot | Chenopodiaceae | CHPR5 | Stanley Smookler/Denise Wilson |
| Chrysosplenium americanum | American Golden-Saxifrage | Saxifragaceae | CHAM2 | |
| Cicuta bulbifera | Bulblet-Bearing Water-Hemlock | Apiaceae | CIBU | |
| Cicuta maculata | Water Hemlock | Apiaceae | CIMA2 | Richard Gitar |
| Cirsium carolinianum | Soft Thistle | Asteraceae | CICA7 | |
| Cirsium flodmanii | Flodman's thistle | Asteraceae | CIFL | Jeff Hansen |
| Cirsium muticum | Swamp Thistle | Asteraceae | CIMU | |
| Cirsium pumilum | Hill's Thistle | Asteraceae | CIPU4 | |
| Claytonia rosea | western springbeauty | Portulacaceae | CLRO5 | Denise Wilson |
| Clematis fremontii | Fremont's leather flower | Ranunculaceae | CLFR | Jeff Hansen |
| Clinopodium arkansanum | Limestone Wild Basil | Lamiaceae | CLAR5 | |
| Clitoria mariana | Butterfly Pea | Fabaceae | CLMA4 | |
| Collinsia verna | Spring Blue-Eyed Mary | Scrophulariaceae | COVE2 | Hilary & Dee Ann |
| Commelina diffusa | Climbing Dayflower | Commelinaceae | CODID3 | |
| Conopholis americana | American Squawroot | Orobanchaceae | COAM | |
| Corallorhiza maculata | summer coralroot | Orchidaceae | COMA25 | Pati Vitt |
| Corallorhiza trifida | yellow coralroot | Orchidaceae | COTR18 | Jen & Tug @ Folius Consulting |
| Coreopsis pubescens | Star Tickseed | Asteraceae | COPU2 | |
| Corispermum americanum | American Bugseed | Chenopodiaceae | COAMA2 | |
| Cornus amomum | Silky Dogwood | Cornaceae | COAM2 | |
| Cornus obliqua | Pale Dogwood | Cornaceae | COOB9 | Jeff Hansen |
| Cornus rugosa | Round-Leaf Dogwood | Cornaceae | CORU | |
| Corydalis flavula | Yellow Fumewort | Fumariaceae | COFL3 | Jeff Hansen |
| Corydalis micrantha | Hale's Corydalis | Fumariaceae | COMI2 | |
| Corylus americana | American Filbert | Betulaceae | COAM3 | Cindy Ramseyer |
| Crataegus apiomorpha | Fort Sheridan Hawthorn | Rosaceae | CRAP4 | |
| Crataegus calpodendron | Urn-Shaped Hawthorn | Rosaceae | CRCA | |
| Crataegus chrysocarpa | Fire-Berry Hawthorn | Rosaceae | CRCH | Grace Kostel |
| Crataegus coccinioides | Kansas Hawthorn | Rosaceae | CRCO2 | |
| Crataegus corusca | Shining Branch Hawthorn | Rosaceae | CRCO27 | |
| Crataegus crus-galli | Cock-Spur Thorn | Rosaceae | CRCR2 | Joshua Skolnick |
| Crataegus disperma | Spreading Hawthorn | Rosaceae | CRDI4 | |
| Crataegus dispessa | Mink Hawthorn | Rosaceae | CRDI9 | |
| Crataegus dissona | Northern Hawthorn | Rosaceae | CRDI10 | |
| Crataegus dodgei | Dodge's Hawthorn | Rosaceae | CRDO3 | |
| Crataegus engelmannii | Engelmann's Hawthorn | Rosaceae | CREN | |
| Crataegus flabellata | Fan-Leaf Hawthorn | Rosaceae | CRFL | |
| Crataegus fulleriana | Fuller's Hawthorn | Rosaceae | CRFU2 | |
| Crataegus grandis | Grand Hawthorn | Rosaceae | CRGR13 | |
| Crataegus holmesiana | Holmes' Hawthorn | Rosaceae | CRHO5 | |
| Crataegus intricata | Copenhagen Hawthorn | Rosaceae | CRIN3 | |
| Crataegus lucorum | Grove Hawthorn | Rosaceae | CRLU | |
| Crataegus macrosperma | Big-Fruit Hawthorn | Rosaceae | CRMA3 | |
| Crataegus margaretta | Margarett's Hawthorn | Rosaceae | CRMA4 | |
| Crataegus marshallii | Parsley Hawthorn | Rosaceae | CRMA5 | |
| Crataegus mollis | Red Haw | Rosaceae | CRMO2 | Joshua Skolnick |
| Crataegus nitida | Glossy Hawthorn | Rosaceae | CRNI | |
| Crataegus ovata | Ovate-Leaf Hawthorn | Rosaceae | CROV2 | |
| Crataegus pedicellata | Scarlet Hawthorn | Rosaceae | CRPE | |
| Crataegus phaenopyrum | Washington Thorn | Rosaceae | CRPH | |
| Crataegus porrecta | Pittsburgh Hawthorn | Rosaceae | CRPO11 | |
| Crataegus pratensis | Prairie Hawthorn | Rosaceae | CRPR4 | |
| Crataegus pringlei | Pringle's Hawthorn | Rosaceae | CRPR | |
| Crataegus pruinosa | Waxy-Fruit Hawthorn | Rosaceae | CRPR2 | |
| Crataegus punctata | Dotted Hawthorn | Rosaceae | CRPU | Jen & Tug @ Folius Consulting |
| Crataegus schuettei | Schuette's Hawthorn | Rosaceae | CRSC4 | |
| Crataegus spathulata | Little-Hip Hawthorn | Rosaceae | CRSP | |
| Crataegus succulenta | Fleshy Hawthorn | Rosaceae | CRSU5 | Jen & Tug @ Folius Consulting |
| Crataegus whittakeri | Hawthorn | Rosaceae | CRWH | |
| Crepis runcinata | fiddleleaf hawksbeard | Asteraceae | CRRUR | Denise Wilson |
| Croton capitatus | Capitate Croton | Euphorbiaceae | CRCA6 | Cindy Ramseyer |
| Croton glandulosus | Sand Croton | Euphorbiaceae | CRGLS | |
| Croton michauxii | Narrow-Leaf Rushfoil | Euphorbiaceae | CRMI8 | |
| Croton willdenowii | Egg-Leaf Rushfoil | Euphorbiaceae | CRWI5 | |
| Cryptantha minima | little cryptantha | Boraginaceae | CRMI5 | Christy Caswell |
| Cryptantha virgata | miner's candle | Boraginaceae | CRVI4 | Denise Wilson |
| Cunila origanoides | Common Dittany | Lamiaceae | CUOR | Cindy Ramseyer |
| Cuphea viscosissima | Blue Waxweed | Lythraceae | CUVI | Jeff Hansen |
| Cuscuta cephalanthi | Buttonbush Dodder | Cuscutaceae | CUCE | |
| Cuscuta compacta | Compact Doddor | Cuscutaceae | CUCO2 | |
| Cuscuta coryli | Hazel Dodder | Cuscutaceae | CUCO3 | |
| Cuscuta cuspidata | Cusp Doddor | Cuscutaceae | CUCU2 | |
| Cuscuta gronovii | Scaldweed | Cuscutaceae | CUGR | |
| Cuscuta indecora | Large-Seed Doddor | Cuscutaceae | CUIN | |
| Cuscuta pentagona | Bush-Clover Doddor | Cuscutaceae | CUPE3 | Jeff Hansen |
| Cuscuta polygonorum | Smartweed Doddor | Cuscutaceae | CUPO | |
| Cycloloma atriplicifolium | Winged-Pigweed | Chenopodiaceae | CYAT | Christy Caswell |
| Cyperus erythrorhizos | Red-Root Flat Sedge | Cyperaceae | CYER2 | Jeff Hansen |
| Cyperus filicinus | Fern Flat Sedge | Cyperaceae | CYFI | |
| Cyperus flavescens | Yellow Flat Sedge | Cyperaceae | CYFL | |
| Cyperus houghtonii | Houghton's Flat Sedge | Cyperaceae | CYHO | |
| Cyperus lupulinus | Fern Flat Sedge | Cyperaceae | CYLUM | |
| Cyperus lupulinus | Great Plains Flat Sedge | Cyperaceae | CYLU2 | Jeff Hansen |
| Cyperus squarrosus | Awned Flat Sedge | Cyperaceae | CYSQ | Jeff Hansen |
| Cypripedium parviflorum | greater yellow lady's slipper | Orchidaceae | CYPAP3 | |
| Dalea enneandra | Nine-Anther Prairie-Clover | Fabaceae | DAEN | Christy Caswell |
| Decodon verticillatus | Swamp-Loosestrife | Lythraceae | DEVE | |
| Delphinium alpestre | Colorado larkspur | Ranunculaceae | DEAL | |
| Delphinium tricorne | Dwarf Larkspur | Ranunculaceae | DETR | Jeff Hansen |
| Desmodium ciliare | Hairy Tick Trefoil | Fabaceae | DECI | Cindy Ramseyer |
| Desmodium cuspidatum | Large-Bract Tick-Trefoil | Fabaceae | DECU | Jeff Hansen |
| Desmodium laevigatum | Smooth Tick-Trefoil | Fabaceae | DELA2 | Cindy Ramseyer |
| Desmodium marilandicum | Small-Leaved Tick Trefoil | Fabaceae | DEMA2 | Cindy Ramseyer |
| Desmodium nudiflorum | Naked-Flower Tick-Trefoil | Fabaceae | DENU4 | Hilary and Dee Ann |
| Desmodium nuttallii | Nuttall's Tick Trefoil | Fabaceae | DENU5 | Cindy Ramseyer |
| Desmodium paniculatum | Panicled Tick Trefoil | Fabaceae | DEPA6 | Jeff Hansen |
| Desmodium pauciflorum | Few-Flower Tick-Trefoil | Fabaceae | DEPA7 | Cindy Ramseyer |
| Desmodium perplexum | Perplexed Tick-Trefoil | Fabaceae | DEPE80 | |
| Desmodium sessilifolium | Sessile-Leaved Ticktrefoil | Fabaceae | DESE | Jeff Hansen |
| Diarrhena americana | American Beakgrain | Poaceae | DIAM | |
| Dicentra canadensis | Squirrel-Corn | Fumariaceae | DICA | |
| Dicentra cucullaria | Dutchman's-Breeches | Fumariaceae | DICU | |
| Dicentra eximia | Fringed Bleedinghearts | Fumariaceae | DIEX | |
| Dichanthelium boscii | Bosc's Rosette Grass | Poaceae | DIBO2 | Cindy Ramseyer |
| Dichanthelium clandestinum | Broad-Leaved Panic Grass | Poaceae | DICL | Jeff Hansen |
| Dichanthelium latifolium | Broad-Leaf Rosette Grass | Poaceae | DILA8 | Joshua Skolnick |
| Dichanthelium laxiflorum | Open-Flower Rosette Grass | Poaceae | DILA9 | |
| Dichanthelium longiligulatum | Coastal-Plain Rosette Grass | Poaceae | DILO4 | |
| Dichanthelium malacophyllum | Soft-Leaf Rosette Grass | Poaceae | DIMA5 | Jeff Hansen |
| Dichanthelium meridionale | Matting Rosette Grass | Poaceae | DIME2 | Tania Hanline |
| Dichanthelium ovale | Egg-Leaf Rosette Grass | Poaceae | DIOVA | |
| Dichanthelium sabulorum | Hemlock Rosette Grass | Poaceae | DISA5 | |
| Dichanthelium scoparium | Broom Rosette Grass | Poaceae | DISC3 | |
| Dichanthelium wilcoxianum | Fall Rosette Grass | Poaceae | DIWI5 | |
| Dichondra carolinensis | Carolina Pony's-Foot | Convolvulaceae | DICA3 | |
| Dicliptera brachiata | Branched Foldwing | Acanthaceae | DIBR2 | |
| Didiplis diandra | Water-Purslane | Lythraceae | DIDI | |
| Digitaria filiformis | Finger Grass | Poaceae | DIFI | |
| Digitaria insularis | Sour Grass | Poaceae | DIIN2 | |
| Digitaria villosa | Hairy Fingergrass | Poaceae | DIVI | |
| Dioscorea quaternata | Four-Leaf Yam | Dioscoreaceae | DIQU | |
| Dioscorea villosa | Wild Yam | Dioscoreaceae | DIVI4 | Richard Gitar |
| Dirca palustris | Eastern Leatherwood | Thymelaeaceae | DIPA9 | |
| Dodecatheon amethystinum | Jeweled Shootingstar | Primulaceae | DOAM | Joshua Skolnick |
| Dodecatheon frenchii | French's Shootingstar | Primulaceae | DOFR2 | |
| Doellingeria umbellata | Flattop Aster | Asteraceae | DOUMU | |
| Doellingeria umbellata | Parasol White-Top | Asteraceae | DOUM2 | Anita Merritt |
| Draba aurea | golden draba | Brassicaceae | DRAU | Denise Wilson |
| Draba brachycarpa | Short-Pod Whitlow-Grass | Brassicaceae | DRBR | |
| Draba nemorosa | woodland draba | Brassicaceae | DRNE | Stan Smookler/Denise Wilson |
| Dracocephalum parviflorum | American Dragonhead | Lamiaceae | DRPA2 | |
| Echinacea paradoxa | Bush's purple coneflower | Asteraceae | ECPA2 | Cindy Ramseyer |
| Echinochloa walteri | Salt-Marsh Cockspur Grass | Poaceae | ECWA | Richard Gitar |
| Echinocystis lobata | Wild Cucumber | Cucurbitaceae | ECLO | Margo Milde |
| Elatine brachysperma | Short-Seed Waterwort | Elatinaceae | ELBR5 | |
| Elatine minima | Small Waterwort | Elatinaceae | ELMI | |
| Eleocharis elliptica | Elliptic Spike Rush | Cyperaceae | ELEL4 | |
| Eleocharis engelmannii | Engelmann's Spike-Rush | Cyperaceae | ELEN | Jeff Hansen |
| Eleocharis erythropoda | Bald Spike-Rush | Cyperaceae | ELER | Jeff Hansen |
| Eleocharis intermedia | Intermediate Spike-Rush | Cyperaceae | ELIN | Richard Gitar |
| Eleocharis tenuis | Slender Spike Rush | Cyperaceae | ELTEV | |
| Eleocharis wolfii | Wolf's Spikesedge | Cyperaceae | ELWO | |
| Elodea canadensis | Canadian Waterweed | Hydrocharitaceae | ELCA7 | |
| Elodea nuttallii | Western Waterweed | Hydrocharitaceae | ELNU2 | |
| Elyhordeum macounii | Macoun's barley | Poaceae | ELMA8 | |
| Elyhordeum montanense | mountain barley | Poaceae | ELMO4 | |
| Elymus diversiglumis | Various-Glum Wild Rye | Poaceae | ELDI3 | |
| Elymus ebingeri | Bottle Brush Grass | Poaceae | ELEB | Marilyn Kllinkner |
| Elymus submuticus | Beardless Wild Rye | Poaceae | ELSU | |
| Epilobium leptocarpum | slenderfruit willowherb | Onagraceae | EPLE | Stanley Smookler/Denise Wilson |
| Epilobium leptophyllum | Bog Willowherb | Onagraceae | EPLE2 | Stanley Smookler/Denise Wilson |
| Epilobium wisconsinense | Willowherb | Onagraceae | EPWI | |
| Eragrostis frankii | Sandbar Love Grass | Poaceae | ERFR | |
| Eragrostis hirsuta | Big-Top Love Grass | Poaceae | ERHI | |
| Eragrostis hypnoides | Creeping Love Grass | Poaceae | ERHY | Christy Caswell |
| Erigeron philadelphicus | Marsh Fleabane | Asteraceae | ERPH | Jeff Hansen |
| Erigeron pulchellus | Robin's Plantain | Asteraceae | ERPU | Joshua Skolnick |
| Erigeron vetensis | early bluetop fleabane | Asteraceae | ERVE2 | Denise Wilson |
| Eriochloa acuminata | Taper-Tip Cup Grass | Poaceae | ERACA | |
| Eriogonum jamesii | James' buckwheat | Polygonaceae | ERJAX | Denise Wilson & Stan Smookler |
| Eriophorum tenellum | Few-Nerve Cotton-Grass | Cyperaceae | ERTE12 | Richard Gitar |
| Eriophorum viridicarinatum | Tassel Cotton-Grass | Cyperaceae | ERVI9 | |
| Erodium cicutarium | redstem stork's bill | Geraniaceae | ERCI6 | Stan Smookler & Denise Wilson |
| Erysimum asperum | western wallflower | Brassicaceae | ERAS2 | Christy Caswell |
| Erysimum cheiranthoides | wormseed wallflower | Brassicaceae | ERCH9 | Stan Smookler & Denise Wilson |
| Erysimum inconspicuum | Shy Wallflower | Brassicaceae | ERIN7 | |
| Erythronium albidum | Small White Fawn-Lily | Liliaceae | ERAL9 | |
| Erythronium americanum | American Trout-Lily | Liliaceae | ERAMA2 | |
| Erythronium mesochoreum | midland fawnlily | Liliaceae | ERME15 | Jeff Hansen |
| Euonymus atropurpurea | eastern wahoo | Celastraceae | EUATA | Jeff Hansen |
| Euonymus obovata | Running Strawberry-Bush | Celastraceae | EUOB9 | |
| Eupatorium truncatum | Tall Thoroughwort | Asteraceae | EUTR5 | |
| Euphorbia commutata | Tinted Woodland Spurge | Euphorbiaceae | EUCO8 | |
| Euphorbia hexagona | Six-Angle Spurge | Euphorbiaceae | EUHE5 | |
| Euphorbia pubentissima | False Flowering Spurge | Euphorbiaceae | EUPU7 | |
| Eurybia schreberi | Schreber's Wood-Aster | Asteraceae | EUSC5 | |
| Evolvulus nuttallianus | Shaggy Dwarf-Morning-Glory | Convolvulaceae | EVNU | Christy Caswell |
| Festuca paradoxa | Fescue | Poaceae | FEPA2 | Jeff Hansen |
| Fimbristylis annua | Annual Fimbry | Cyperaceae | FIAN | |
| Fimbristylis autumnalis | Autumn Sedge | Cyperaceae | FIAU2 | Jen & Tug @ Folius Consulting |
| Floerkea proserpinacoides | False Mermaidweed | Limnanthaceae | FLPR | Joshua Skolnick |
| Fragaria ananassa | Strawberry | Rosaceae | FRANA2 | |
| Fragaria virginiana | Wild Strawberry | Rosaceae | FRVI | Cindy Ramseyer |
| Frasera caroliniensis | American-Columbo | Gentianaceae | FRCA2 | |
| Fraxinus quadrangulata | Blue Ash | Oleaceae | FRQU | |
| Froelichia floridana | Plains Snake-Cotton | Amaranthaceae | FRFLC | Steve Winter |
| Fuirena pumila | Dwarf Umbrella Sedge | Cyperaceae | FUPU | |
| Fuirena scirpoidea | Southern Umbrella Sedge | Cyperaceae | FUSC | |
| Gaillardia aestivalis | Lance-Leaf Blanket-Flower | Asteraceae | GAAEF | |
| Galactia regularis | Milk Pea | Fabaceae | GARE2 | |
| Galactia volubilis | Downy Milk-Pea | Fabaceae | GAVO | Cindy Ramseyer |
| Galium asprellum | Rough Bedstraw | Rubiaceae | GAAS2 | Richard Gitar |
| Galium concinnum | Shining Bedstraw | Rubiaceae | GACO3 | Jeff Hansen |
| Galium obtusum | Wild Madder | Rubiaceae | GAOB | |
| Galium pilosum | Hairy Bedstraw | Rubiaceae | GAPIP3 | |
| Galium tinctorium | Stiff Marsh Bedstraw | Rubiaceae | GATI | |
| Galium trifidum | Three-Petal Bedstraw | Rubiaceae | GATRT5 | Richard Gitar |
| Gamochaeta purpurea | Spoon-Leaf Purple Everlasting | Asteraceae | GAPU3 | |
| Gaura filipes | Slender Gaura | Onagraceae | GAFI2 | |
| Gentiana alba | Pale Gentian | Gentianaceae | GEAL4 | Joshua Skolnick |
| Gentiana andrewsii | Closed Bottle Gentian | Gentianaceae | GEAN | Jeff Hansen |
| Gentiana billingtonii | Gentian | Gentianaceae | GEBI5 | |
| Gentiana curtisii | Gentian | Gentianaceae | GECU3 | |
| Gentiana prostrata | pygmy gentian | Gentianaceae | GEPR3 | Denise Wilson & Stan Smookler |
| Gentiana saponaria | Soapwort Gentian | Gentianaceae | GESA | |
| Gentianella quinquefolia | Stiff Gentian | Gentianaceae | GEQUO | Joshua Skolnick |
| Geranium maculatum | Wild Geranium | Geraniaceae | GEMA | Emily Yates |
| Geranium richardsonii | Richardson's geranium | Geraniaceae | GERI | Denise Wilson & Stan Smookler |
| Geum laciniatum | Rough Avens | Rosaceae | GELA | |
| Glandularia bipinnatifida | Dakota mock vervain | Verbenaceae | GLBIC | Jeff Hansen |
| Glandularia canadensis | Rose Verbena | Verbenaceae | GLCA2 | Jeff Hansen |
| Gleditsia aquatica | Water-Locust | Fabaceae | GLAQ | |
| Glyceria borealis | Small Floating Manna Grass | Poaceae | GLBO | |
| Glyceria septentrionalis | Floating Manna Grass | Poaceae | GLSE3 | Joshua Skolnick |
| Gratiola aurea | Golden Hedge-Hyssop | Scrophulariaceae | GRAU | |
| Gymnocladus dioicus | Kentucky Coffeetree | Fabaceae | GYDI | David Zaya |
| Gymnopogon ambiguus | Bearded Skeleton Grass | Poaceae | GYAM | |
| Hackelia deflexa | Nodding Stickseed | Boraginaceae | HADEA | |
| Halenia deflexa | American Spurred-Gentian | Clusiaceae | HADE2 | |
| Hasteola suaveolens | False Indian-Plantain | Asteraceae | HASU3 | |
| Helenium flexuosum | Purple-Headed Sneezeweed | Asteraceae | HEFL | |
| Helenium polyphyllum | Sneezeweed | Asteraceae | HEPO2 | Marilyn Kllinkner |
| Helianthemum bicknellii | Hoary Frostweed | Cistaceae | HEBI2 | |
| Helianthus atrorubens | Purple-Disk Sunflower | Asteraceae | HEAT | |
| Helianthus decapetalus | Pale Sunflower | Asteraceae | HEDE | |
| Helianthus doronicoides | Sunflower | Asteraceae | HEDO | |
| Helianthus laetiflorus | Sunflower | Asteraceae | HELA | Joshua Skolnick |
| Helianthus luxurians | Sunflower | Asteraceae | HELU4 | |
| Helianthus microcephalus | Small Wood Sunflower | Asteraceae | HEMI3 | |
| Helianthus silphioides | Silphium Sunflower | Asteraceae | HESI | |
| Hepatica nobilis | Liverwort | Ranunculaceae | HENO2 | Anita Merritt |
| Heteranthera dubia | Grass-Leaf Mud-Plantain | Pontederiaceae | HEDU2 | |
| Heteranthera multiflora | Bouquet Mud-Plantain | Pontederiaceae | HEMU5 | Jeff Hansen |
| Heterotheca camporum | Lemon-Yellow False Golden-Aster | Asteraceae | HECAC2 | |
| Heterotheca fulcrata | rockyscree false goldenaster | Asteraceae | HEFU3 | Denise Wilson |
| Hieracium canadense | Canada Hawkweed | Asteraceae | HICA3 | Grace Kostel |
| Hieracium fassettii | Hawkweed | Asteraceae | HIFAF | |
| Hieracium kalmii | Kalm's Hawkweed | Asteraceae | HIKA2 | |
| Hieracium scabrum | Hairy Hawkweed | Asteraceae | HISC | Richard Gitar |
| Hierochloe hirta | Northern Sweet Grass | Poaceae | HIHIA | Richard Gitar |
| Hottonia inflata | American Featherfoil | Primulaceae | HOIN | |
| Houstonia canadensis | Canadian Summer Bluet | Rubiaceae | HOCA5 | |
| Houstonia longifolia | Long-Leaf Summer Bluet | Rubiaceae | HOLO | Cindy Ramseyer |
| Houstonia purpurea | Venus'-Pride | Rubiaceae | HOPU2 | |
| Houstonia purpurea | Bluets | Rubiaceae | HOPUC | Cindy Ramseyer |
| Houstonia pusilla | Tiny Bluet | Rubiaceae | HOPU3 | |
| Hybanthus verticillatus | babyslippers | Violaceae | HYVE | Jeff Hansen |
| Hydrangea cinerea | Ashy Hydrangea | Hydrangeaceae | HYCI3 | |
| Hydrastis canadensis | Goldenseal | Ranunculaceae | HYCA | Cindy Ramseyer |
| Hydrophyllum appendiculatum | Great Waterleaf | Hydrophyllaceae | HYAP | |
| Hydrophyllum canadense | Blunt-Leaf Waterleaf | Hydrophyllaceae | HYCA3 | |
| Hydrophyllum macrophyllum | Large-Leaf Waterleaf | Hydrophyllaceae | HYMA | |
| Hylotelephium telephioides | Allegheny Annual-Stonecrop | Crassulaceae | HYTE9 | |
| Hypericum boreale | Northern St. John's-Wort | Clusiaceae | HYBO2 | Richard Gitar |
| Hypericum canadense | Lesser Canadian St. John's-Wort | Clusiaceae | HYCA7 | |
| Hypericum ellipticum | Pale St. John's-Wort | Clusiaceae | HYEL | |
| Hypericum gymnanthum | Clasping-Leaf St. John's-Wort | Clusiaceae | HYGY | |
| Hypericum lobocarpum | Five-Lobe St. John's-Wort | Clusiaceae | HYLO2 | |
| Hypericum majus | Greater Canadian St. John's-Wort | Clusiaceae | HYMA2 | Richard Gitar |
| Hypericum mutilum | Dwarf St. Johns-Wort | Clusiaceae | HYMU | Jeff Hansen |
| Hypericum prolificum | Shrubby St. John's-Wort | Clusiaceae | HYPR | |
| Hypericum pseudomaculatum | Spotted St. Johns-Wort | Clusiaceae | HYPS | |
| Impatiens capensis | Spotted Touch-Me-Not | Balsaminaceae | IMCA | Richard Gitar |
| Impatiens pallida | Pale Touch-Me-Not | Balsaminaceae | IMPA | Hilary & Dee Ann |
| Iodanthus pinnatifidus | Purple-Rocket | Brassicaceae | IOPI | |
| Ionactis linariifolius | Flax-Leaf Ankle-Aster | Asteraceae | IOLI2 | |
| Ipomoea leptophylla | bush morning-glory | Convolvulaceae | IPLE | Christy Caswell |
| Ipomoea pandurata | Man-of-the-Earth | Convolvulaceae | IPPA | Jeff Hansen |
| Ipomopsis rubra | Standing-Cypress | Polemoniaceae | IPRU2 | |
| Ipomopsis spicata | spiked ipomopsis | Polemoniaceae | IPSP | Christy Caswell |
| Iris brevicaulis | Blue Water Iris | Iridaceae | IRBR2 | |
| Iris cristata | Dwarf Crested Iris | Iridaceae | IRCR | |
| Iris fulva | Copper Iris | Iridaceae | IRFU | |
| Isolepis carinata | Keeled Lateral-Bulrush | Cyperaceae | ISCA6 | |
| Jamesia americana | fivepetal cliffbush | Hydrangeaceae | JAAM | Denise Wilson/Stan Smookler |
| Juncus biflorus | Two-Flowered Rush | Juncaceae | JUBI | |
| Juncus filiformis | thread rush | Juncaceae | JUFU | Pati Vitt |
| Juncus nodatus | Stout Rush | Juncaceae | JUNO | |
| Juncus secundus | Lopsided Rush | Juncaceae | JUSE | |
| Justicia americana | American Water-Willow | Acanthaceae | JUAM | Jeff Hansen |
| Kallstroemia parviflora | Warty Caltrop | Zygophyllaceae | KAPA | |
| Kalmia polifolia | bog laurel | Lauraceae | KAPO | Liana May |
| Krigia biflora | False Dandelion | Asteraceae | KRBI | Joshua Skolnick |
| Krigia caespitosa | Dwarf Dandelion | Asteraceae | KRCA | Jeff Hansen |
| Krigia dandelion | Dwarf Dandelion | Asteraceae | KRDA | Jeff Hansen |
| Kyllinga pumila | Low Spike Sedge | Cyperaceae | KYPU | |
| Lactuca biennis | Wild Blue Lettuce | Asteraceae | LABI | |
| Lactuca morssii | Lettuce | Asteraceae | LAMO4 | |
| Lactuca serriola | prickly lettuce | Asteraceae | LASE | |
| Lactuca tatarica | blue lettuce | Asteraceae | LATAP | Stanley Smookler/Denise Wilson |
| Lappula occidentalis | Flat-Spine Sheepburr | Boraginaceae | LAOCO | Denise Wilson |
| Lechea pulchella | Leggett's Pinweed | Cistaceae | LEPUM | |
| Lechea stricta | Prairie Pinweed | Cistaceae | LEST | |
| Lechea tenuifolia | Narrow-Leaved Pinweed | Cistaceae | LETE | |
| Leersia lenticularis | Catchfly Grass | Poaceae | LELE2 | |
| Lemna gibba | Inflated Duckweed | Lemnaceae | LEGI | |
| Lemna minor | Common Duckweed | Lemnaceae | LEMI3 | Richard Gitar |
| Lemna trisulca | Ivy-Leaf Duckweed | Lemnaceae | LETR | |
| Leptochloa panicoides | Amazon Sprangletop | Poaceae | LEPA3 | |
| Lespedeza acuticarpa | Bush-Clover | Fabaceae | LEAC | |
| Lespedeza brittonii | Bush Clover | Fabaceae | LEBR2 | |
| Lespedeza frutescens | Shrubby Bush-Clover | Fabaceae | LEFR5 | |
| Lespedeza hirta | Hairy Bush Clover | Fabaceae | LEHI2 | Hilary and Dee Ann |
| Lespedeza manniana | Bush Clover | Fabaceae | LEMA6 | |
| Lespedeza nuttallii | Bush Clover | Fabaceae | LENU | |
| Lespedeza procumbens | Trailing Bush-Clover | Fabaceae | LEPR | Cindy Ramseyer |
| Lespedeza repens | Creeping Bush Clover | Fabaceae | LERE2 | Cindy Ramseyer |
| Lespedeza simulata | Bush-Clover | Fabaceae | LESI2 | |
| Lespedeza stuevei | Bush Clover | Fabaceae | LEST5 | |
| Liatris gladewitzii | Gayfeather | Asteraceae | LIGL3 | |
| Liatris ridgwayi | Gayfeather | Asteraceae | LIRI2 | |
| Liatris spheroidea | Spherical Gayfeather | Asteraceae | LISP4 | |
| Liatris squarrulosa | Appalachian Gayfeather | Asteraceae | LISQ2 | |
| Liatris steelei | Gayfeather | Asteraceae | LIST6 | |
| Ligusticum filicinum | fernleaf licorice-root | Apiaceae | LIFI | |
| Lilium michiganense | Michigan Lily | Liliaceae | LIMI9 | |
| Lilium superbum | Turk's-Cap Lily | Liliaceae | LISU | |
| Limnosciadium pinnatum | Tansy Dogshade | Apiaceae | LIPI2 | |
| Linum compactum | Wyoming Flax | Linaceae | LICO3 | Grace Kostel |
| Linum floridanum | Florida Yellow Flax | Linaceae | LIFLF2 | |
| Linum medium | Small Yellow Flax | Linaceae | LIMET | Cindy Ramseyer |
| Linum striatum | Ridged Yellow Flax | Linaceae | LIST | |
| Lipocarpha drummondii | Drummond's Halfchaff Sedge | Cyperaceae | LIDR3 | |
| Lipocarpha maculata | American Halfchaff Sedge | Cyperaceae | LIMA4 | |
| Lipocarpha micrantha | Small-Flower Halfchaff Sedge | Cyperaceae | LIMI12 | |
| Lithophragma parviflorum | smallflower woodland-star | Saxifragaceae | LIPA5 | Denise Wilson & Stan Smookler |
| Lithospermum canescens | Hoary Puccoon | Boraginaceae | LICA12 | |
| Lithospermum caroliniense | Hairy Puccoon | Boraginaceae | LICA13 | Liana May |
| Lithospermum latifolium | American Gromwell | Boraginaceae | LILA2 | Joshua Skolnick |
| Lobelia inflata | Indian Tobacco | Campanulaceae | LOIN | Cindy Ramseyer |
| Lobelia kalmii | Brook Lobelia | Campanulaceae | LOKA | Liana May |
| Lobelia puberula | Downy Lobelia | Campanulaceae | LOPUS | |
| Lobelia speciosa | Lobelia | Campanulaceae | LOSP2 | |
| Lomatium orientale | Northern Idaho biscuitroot | Apiaceae | LOOR | Denise Wilson/Stan Smookler |
| Lomatogonium rotatum | marsh felwort | Gentianaceae | LORO | |
| Lonicera canadensis | American Fly-Honeysuckle | Caprifoliaceae | LOCA7 | Jen & Tug @ Folius Consulting |
| Lonicera reticulata | Grape Honeysuckle | Caprifoliaceae | LORE5 | |
| Ludwigia sphaerocarpa | Globe-Fruit Primrose-Willow | Onagraceae | LUSP | |
| Lupinus perennis | Wild Lupine | Fabaceae | LUPE3 | Joshua Skolnick |
| Luzula echinata | Hedgehog Wood-Rush | Juncaceae | LUEC | |
| Lycopus asper | Rough Water-Horehound | Lamiaceae | LYAS | Richard Gitar |
| Lycopus rubellus | Taper-Leaf Water-Horehound | Lamiaceae | LYRU | |
| Lycopus uniflorus | Northern Water-Horehound | Lamiaceae | LYUN | Richard Gitar |
| Lysimachia ciliata | Fringed Loosestrife | Primulaceae | LYCI | Richard Gitar |
| Lysimachia commixta | Yellow-Loosestrife | Primulaceae | LYCO6 | |
| Lysimachia producta | Yellow-Loosestrife | Primulaceae | LYPR | |
| Malus coronaria | Sweet Crabapple | Rosaceae | MACO5 | |
| Malus ioensis | Prairie Crabapple | Rosaceae | MAIOI | |
| Malus soulardii | Apple | Rosaceae | MASO3 | |
| Manfreda virginica | False Aloe | Agavaceae | MAVI5 | Cindy Ramseyer |
| Matelea gonocarpos | Angular-Fruit Milkvine | Asclepiadaceae | MAGO | |
| Mecardonia acuminata | Axil-Flower | Scrophulariaceae | MEACA | Hilary and Dee Ann |
| Meehania cordata | Meehan's-Mint | Lamiaceae | MECO | |
| Melampyrum lineare | Cow Wheat | Scrophulariaceae | MELIL2 | |
| Melanthera nivea | Snow Squarestem | Asteraceae | MENI3 | |
| Melanthium woodii | Wood's Bunchflower | Liliaceae | MEWO | |
| Melica nitens | Three-Flowered Melic Grass | Poaceae | MENI | Linda Ellis |
| Menispermum canadense | Canadian Moonseed | Menispermaceae | MECA3 | |
| Mentzelia decapetala | Gumbo-Lily | Loasaceae | MEDE2 | Christy Caswell |
| Mertensia lanceolata | prairie bluebells | Boraginaceae | MELA3 | Denise Wilson & Stan Smookler |
| Mimosa microphylla | Cat-Claw | Fabaceae | MIMI22 | |
| Minuartia glabra | Appalachian Stitchwort | Caryophyllaceae | MIGL5 | |
| Minuartia michauxii | Michaux's Stitchwort | Caryophyllaceae | MIMIM | |
| Mirabilis albida | White Four-O'clock | Nyctaginaceae | MIAL4 | |
| Mirabilis hirsuta | hairy four o'clock | Nyctaginaceae | MIHI | Denise Wilson |
| Mitella diphylla | Two-Leaf Bishop's-Cap | Saxifragaceae | MIDI3 | |
| Moehringia lateriflora | Bluntleaf Sandwort | Caryophyllaceae | MOLA6 | Stanley Smookler/Denise Wilson |
| Monarda bradburiana | Eastern Beebalm | Lamiaceae | MOBR2 | Jeff Hansen |
| Monarda clinopodia | White Bergamot | Lamiaceae | MOCL | Jeff Hansen |
| Monarda media | Purple Bergamot | Lamiaceae | MOME | |
| Monotropa hypopithys | Many-Flower Indian-Pipe | Monotropaceae | MOHY3 | Richard Gitar |
| Monotropa uniflora | One-Flower Indian-Pipe | Monotropaceae | MOUN3 | Richard Gitar |
| Montia chamissoi | water minerslettuce | Portulacaceae | MOCH | Denise Wilson |
| Muhlenbergia capillaris | Hair Grass | Poaceae | MUCA2 | |
| Muhlenbergia curtisetosa | Muhly | Poaceae | MUCU2 | |
| Muhlenbergia glabriflora | Muhly | Poaceae | MUGL | |
| Muhlenbergia racemosa | GREEN MUHLY | Poaceae | MURA | Josh Sulman |
| Muhlenbergia sylvatica | Woodland Muhly | Poaceae | MUSY | |
| Muhlenbergia tenuiflora | Slender Muhly | Poaceae | MUTE | |
| Myosotis macrosperma | Large-Seed Forget-Me-Not | Boraginaceae | MYMA | |
| Myriophyllum hippuroides | Western Water-Milfoil | Haloragaceae | MYHI | |
| Myriophyllum humile | Low Water-Milfoil | Haloragaceae | MYHU | |
| Najas flexilis | Wavy Waternymph | Najadaceae | NAFL | |
| Najas gracillima | Slender Waternymph | Najadaceae | NAGR | |
| Nemopanthus mucronatus | Catberry | Aquifoliaceae | NEMU2 | Liana May |
| Neobeckia aquatica | Lakecress | Brassicaceae | NEAQ2 | |
| Oenothera albicaulis | White-Stem Evening-Primrose | Onagraceae | OEAL | Christy Caswell |
| Oenothera clelandii | Lesser Four-Point Evening-Primrose | Onagraceae | OECL3 | |
| Oenothera coronopifolia | crownleaf evening-primrose | Onagraceae | OECO2 | Denise Wilson |
| Oenothera linifolia | Thread-Leaved Sundrops | Onagraceae | OELI | |
| Oenothera nuttallii | Nuttall's Evening-Primrose | Onagraceae | OENU | Stanley Smookler/Denise Wilson |
| Oenothera oakesiana | Oakes' Evening-Primrose | Onagraceae | OEOA | |
| Oenothera pilosella | Prairie Sundrops | Onagraceae | OEPI2 | |
| Oligoneuron lutescens | Upland Aster | Asteraceae | OLLU | |
| Onosmodium molle | Marbleseed | Boraginaceae | ONMO | |
| Orbexilum onobrychis | French-Grass | Fabaceae | ORON | |
| Orbexilum simplex | Single-Stem Leather-Root | Fabaceae | ORSI | |
| Orthilia secunda | Sidebells | Pyrolaceae | ORSE | Stanley Smookler/Denise Wilson |
| Oryzopsis asperifolia | Mountain Rice | Poaceae | ORAS | Josh Sulman |
| Osmorhiza claytonii | Hairy Sweet-Cicely | Apiaceae | OSCL | Cindy Ramseyer |
| Osmorhiza longistylis | Aniseroot | Apiaceae | OSLO | Jeff Hansen |
| Oxalis stricta | Yellow Wood Sorrel | Oxalidaceae | OXST | Jeff Hansen |
| Packera aurea | Golden Groundsel | Asteraceae | PAAU3 | |
| Packera glabella | Cress-Leaf Groundsel | Asteraceae | PAGL17 | |
| Packera paupercula | Balsam Groundsel | Asteraceae | PAPA20 | Cindy Ramseyer |
| Panax quinquefolius | American Ginseng | Araliaceae | PAQU | Richard Gitar |
| Panicum flexile | Slender Panic Grass | Poaceae | PAFL2 | |
| Panicum gattingeri | Gattinger's Panic Grass | Poaceae | PAGA | |
| Panicum philadelphicum | Panic Grass | Poaceae | PAPH | |
| Panicum rigidulum | Munro Grass | Poaceae | PARI4 | |
| Panicum verrucosum | Warty Panic Grass | Poaceae | PAVE2 | |
| Paronychia canadensis | Smooth Forked Nailwort | Caryophyllaceae | PACA11 | |
| Paronychia fastigiata | Smooth Forked Nailwort | Caryophyllaceae | PAFA3 | Jeff Hansen |
| Parthenium hispidum | wild quinine | Asteraceae | PAHI8 | Steve Winter |
| Parthenocissus quinquefolia | Virginia-Creeper | Vitaceae | PAQU2 | Jeff Hansen |
| Parthenocissus vitacea | Thicket-Creeper | Vitaceae | PAVI5 | Jeff Hansen |
| Paspalum fluitans | Swamp Beadgrass | Poaceae | PAFL5 | |
| Paspalum praecox | Early Crown Grass | Poaceae | PAPR4 | |
| Passiflora incarnata | Purple Passion-Flower | Passifloraceae | PAIN6 | |
| Pediomelum argophyllum | Silver-Leaf Indian-Breadroot | Fabaceae | PEAR6 | Jeff Hansen |
| Pediomelum esculentum | large Indian breadroot | Fabaceae | PEES | Jeff Hansen |
| Penstemon alluviorum | Lowland Beardtongue | Scrophulariaceae | PEAL4 | |
| Penstemon arkansanus | Arkansas Beardtongue | Scrophulariaceae | PEAR4 | |
| Penstemon buckleyi | Buckley's beardtongue | Scrophulariaceae | PEBU | Jeff Hansen |
| Penstemon canescens | Eastern Gray Beardtongue | Scrophulariaceae |