Paul L. Redfearn, Jr.

Abutilon theophrasti Medicus, Photo 1, Photo 2, leaf, fruit, velvet leaf, butter-print [Malvaceae,  mallow family]

Acalypha ostryifolia Riddell, three-seeded mecury [Euphorbiaceae, spurge family]

Acalypha rhomboidea Raf. rhombic copperleaf, three-seeded mecury [Euphorbiaceae, spurge family]

Acer ginnala Maxim., Photo 1, Photo 2 [Sapindaceae, soapberry family]

Acer griseum (Franch.) Pax, branches, leaves, bark 1, bark 2, paperbark maple [Sapindaceae, soapberry Family]

Acer negundo L., box-elder [Sapindaceae, soapberry family]

Acer nigrum Michx., black maple [Sapindaceae, soapberry Family]

Acer platanoides L., branches, fruits, Norway maple [Sapindaceae, soapberry Family]

Acer rubrum L., flowers, fruits, leaves, red maple [Sapindaceae, soapberry family]  

Acer saccharinum L., leaves, bark., silver maple, hard maple [Sapindaceae, soapberry family]

Acer saccharum Marshall, flowers, leaves, bark, sugar maple, hard maple [Sapindaceae, soapberry family]

Achillea millefolium L., Photo 1, Photo 2, Photo 3, Photo 4, Photo 5 (carnation gold) yarrow, common milfoil, nosebleed [Asteraceae, daisy family]

Actaea pachypoda Elliott, white baneberry, doll's eyes [Ranunculaceae, buttercup family]

Aesculus glabra Willd var. arguta, Photo 1, Photo 2, Photo 3, Ohio buckeye [Hippocastinaceae, buckeye family]

Aesculus hippocastanum, horse chestnut [Hippocastinaceae, buckeye family]

Aesculus pavia L., red buckeye [Hippocastinaceae, buckeye family]

Agalinis tenuifolia (M. Vahl) Raf. var. parviflora (Nutt.) Pennell, gerardia [Orobanchaeceae, bromrape family]

Agalinis tenuifolia (M. Vahl.) Raf., Photo 1, slender gerardia [Orobanchaeceae, broomrape family]

Agalinis skinneriana (A. W. Wood) Britton, pale gerardia, [Orobanchaceae, bromrape family]

Agrimonia parviflora Sol., swamp agrimony, hooked agrimony [Rosaceae, rose family]

Agrimonia pubescens Wallr., downy agrimony, soft agrimony (Rosaceae, rose family]

Agrimonia rostellata Wallr., woodland agrimonia [Rosaceae, rose family]

Agrostemma githago L., corn cockle [Caryophyllaceae, pink family]  

Ailanthus altissima (Mill.) Swingle, Photo 1, Photo 2, Photo 3, Photo 4, fruits, tree of heaven [Simarubaceae, Quassia family]

Albizia julibrissin Durazz., Photo 1, Photo 2, Photo3, mimosa, silktree [Mimosaceae, mimosa family]

Alisma subcordatum Raf., Photo 1, photo 2, photo 3, photo 4, water plantain [Alismataceae, water plantain family]

Alliaria petiolata (M. Bieb.) Cavara & Grande, Photo 1, Photo 2, Photo 3, Photo 4, garlic mustard [Brassicaceae, mustard family]

Allium canadense L.var. canadense, wild garlic, wild onion [Liliaceae, lily family] 

Allium canadense L. var. lavendure (Bates) F. Owenby, Photo 1, Photo 2, wild garlic, wild onion, [Liliaceae, lily family]

Allium stellatum Ker. Gawl., wild onion [Liliaceae, lily family] 

Allium venale L., field garlic [Liliaceae, lily family]

Alnus glutinosa Garetn., cultivated, Photo 1, Photo 2, [Betulaceae, beech family]

Alnus serrulata (Aiton) Willd., Photo 1,  common alder, smooth tag alder [Betulaceae, beech family] 

Ammania cocinea Rottb., Photo 1, Photo 2, toothcup [Lythraceae, tooth cup family]

Amaranthus hybridus L., Photo 1, Photo 2, green amaranth, slender pigweed [Amaranthaceae, amaranthus family] 

Ambrosia artemisiifolia L. var. elalior (L.) Descourt., Photo 1, Photo 2 [Asteraceae, daisy family]

Ambrosia bidentata Michaux, Photo 1, Photo 2, Photo 2, ragweed, lanceleaf ragweed, southern ragweed [Asteraceae, daisy family]

Ambrosia trifida L., Photo 1, Photo 2, Photo 3, horse weed, giant ragweed, great ragweed, buffalo weed [Asteraceae, daisy family]

Amelanchier arborea (Michaux f.) Fern., shadbush, service berry, sarviss bush, sarviss tree, June berry [Rosaceae, rose family]

Amianthium muscaetoxicum (Walter) A. Gray, fly poison [Liliaceae, lily family]  

Ammania coccinea Rothb., tooth cup [Lythraceae, toothcup family]

Amorpha canescens Pursh, Photo 1, Photo 2, Photo 3, Photo 4, Photo 5, Photo 6, lead plant [Fabaceae, bean family]

Amorpha fruticosa L., false indigo [Fabaceae, bean family]

Ampelopsis cordata Michx., Photo 1, Photo 2, Photo 3, false grape, raccoon grape, heartleaf ampelopsis [Vitaceae, grape family]

Amphiachyris dracunculoides (DC.) Nutt., broom snakeroot [Asteraceae, daisy family]

Amsonia ciliata Walt. var. filifolia A. W. Wood,  ciliate blue star, Photo 1, Photo 2, Photo 3[Apocynaceae, dogbane family]

Amsonia illustris Woodson, Photo 1, Photo 2, Photo 3, shinning blue star [Apocynaceae, dogbane family]

Amsonia tabernaemontana var. gattingeri Woodson, Photo 1, Photo 2, blue star, willow amsonia [Apocynaceae, dogbane family]   

Anagallis arvensis L. Scarlet Pimpernel [Primulaceae, primrose family]

Andrachne phyllanthoides (Nutt.) J. Coulter, Photo 1, Photo 2, buck brush [Euphorbiaceae, spurge family]

Andropogon gerardi Vitman var. gerardi, Photo 1, Photo 2, photo 3, photo 4, big bluestem [Poaceae, grass family]

Andropogon virginicus L., broomsedge [Poaceae, grass family]

Androsace occidentalis Pursh, western rock jasmine [Primulaceae, primrose family]  

Angelica venenosa (Greenway) Fern., angelica, wood angelica, hairy angelica [Apiaceae, carrot family]

Anemone caroliniana Walter, Photo 1, Photo 2, prairie anemone, Carolina anemone [Ranunculaceae, buttercup family]  

Anemone virginica L. var. virginica, Photo 1, Photo 2, thimbleweed [Ranunculaceae, buttercup family]

Anemonella thalictroides (L.) Spach, Photo 1, Photo 2, rue anemone [Ranunculaceae, buttercup family]

Antennaria plantaginifolia (L.) Hook., Pussey toes, plainleaf pussy toes, ladies tobacco, Indian tobacco [Asteraceae, daisy family]  

Anthemis cotula L., Mayweed, dogfennel, stinking chamomile [Astreaceae, daisy family]

Apios americana  Medikus, Photo 1, Photo 2, groundnut, American potatobean [Fabaceae, bean family]

Apocynum androsaemfolium  L., spreading dogbane, pink-flowered dogbane [Apocynaceae, dogbane family]

Apocynum cannabinum L. var. cannabinum, indian hemp, prairie dogbane [Apocynaceae, dogbane family]

Aquilegia canadensis L., Photo 1, Photo 2, columbine, wild honeysuckle [Ranunculaceae, buttercup family]

Aralia spinosa L., Photo 1, Photo 2, Hercules' Club, devil's walking stick, tear-blanket [Araliaceae ginseng family]  

Aralia racemosa L., Photo 1, Photo 2, American spikenard [Araliaceae, ginseng family]

Arctium minus (Hill.) Bernh., common burdock [Asteraceae, daisy family]

Arenaria patula Michaux, Photo 1, Photo 2, sandwort [Caryophyllaceae, pink family]

Arenaria serpyllifolia L., thyme-leaved sandwort [Caryophyllaceae, pink family]

Arenaria stricta Michaux ssp. stricta, rock sandwort [Caryophyllaceae, pink family]

Argemone albiflora ssp. texana G. Ownbey, white prickly poppy [Papaveraceae, poppy family]

Argemone mexicana L.,  Photo 1, Photo 2, Mexican prickly poppy [Papaveraceae, poppy family]

Arisaema dracontium (L.) Schott, Photo 1, Photo 2, green dragon [Araceae, arum family]

Arisaema triphyllum (L.) Schott, Jack-in-the-pulpit, Flower, fruit, Indian turnip [Araceae, arum family]

Aristolochia serpentaria L., Photo 1, Photo 2, Photo 3, Virginia snakeroot [Aristolochiaceae, birthwort family]

Aristolochia tomentosa Sims, Flower 1, Flower 2. Flower 3, Flower 4, Flower 5, Fruit, wooly pipe vine, Dutchman's pipe [Aristolochiaceae, birthwort family]  

Arnoglossum atriplicifolium (L.) H. Rob., Photo 1, Photo2, pale Indian plantain [Asteraceae, daisy family]

Artemisia annua L., Photo 1, Photo 2, sweet wormwood, annual wormwood, sweet sagewort, [Asteraceae, daisy family]

Artemisia stelleriana Bess, Photo 1, Photo 2, dusty Miller, beach wormwood [Asteraceae, daisy family]

Arum italicum Mill. ssp. italicum, Photo 1, Photo 2, Italian arum [Araceae, arum family]

Aruncus dioicus var. pubescens (Rydb.) Fern., Photo 1, Photo 2, goat's beard [Rosaceae, rose family]  

Arundinaria gigantea (Walter) Mohlenb., Photo 1, Photo 2, giant cane [Poaceae, grass family]

Asarum canadense L., Photo 1, Photo 2, wild ginger [Aristolochiaceae, birthwort family]  

Asclepias hirtella (Pennell) Woodson, Photo 1, Photo 2, Photo 3, Photo 4, Photo 5, fruit 1, fruit 2, Photo 6, prairie milkweed, tall green milkweed

       [Asclepiadaceae, milkweed family]

Asclepias incarnata L., Photo 1, Photo 2, Photo 3, Photo 4, Photo 5, swamp milkweed [Asclepiadaceae, milkweed family]

Asclepias purpurascens L., Photo 1, Photo 2, purple milkweed [Asclepiadaceae, milkweed family]

Asclepias quadrifolia Jacq., whorled milkweed, four-leaved milkweed [Asclepiadaceae, milkweed family]

Asclepias syrica L., Photo 1, Photo 2, Photo 3Fruit, common milkweed [Asclepiadaceae, milkweed family]

Asclepias tuberosa ssp. interior Woodson, Photo 1, Photo 2Photo 3, Yellow form, fruit, butterfly milkweed, chigger flower, pleurisy root

        [Asclepiadaceae, milkweed family]  

Asclepias variegata L., Photo 1, Photo 2,  variegated milkweed [Asclepiadaceae, milkweed family]

Asclepias verticillata L. Photo 1, Photo 2, Fruit, whorled milkweed, horsetail milkweed (Asclepiadaceae, milkweed family]

Ascelpias viridiflora Raf., green milkweed [Asclepiadaceae, milkweed family]

Asclepias viridis Walter, green-flowered milkweed, spider milkwed [Asclepiadaceae, milkweed family]

Asimina triloba (L.) Dunal, Photo 1, Photo 2, fruit, pawpaw [Annonaceae, custard apple family]  

Ionactis linariifolius (L.) Greene, stiff aster, stiff-leaved aster [Asteraceae, daisy family]  

Eurybia hemisphaerica (Alexander) G. L. Nesom, aster [Asteraceae, daisy family]  

Aster tataricus L., Photo 1, Photo 2, Photo 3, aster [Asteraceae, daisy family]

Astralagus crassicarpus Nutt. var. trichocalyx (Nutt.) Barneby., Photo 1, Photo 2, ground plum [Fabaceae]

Astragalus distortus Torrey & A. Gray, Ozark milk vetch, bent milk vetch [Fabaceae, bean family]

Astranthium integrifolium (Michaux) Nutt., western daisy [Asteraceae, daisy family]  

Aureolaria flava (L.) Farw. Photo 1, Photo 2, smooth false foxglove [Orobanchaceae, broomrape family]

Aureolaria grandiflora (Benth) Pennell var. pulchra Pennell, big-flowered gerardia [Orobanchaceae, bromrape family]  

Aureolaria grandiflora (Benth.) Pennell var. serrata (Torrey ex Benth.) Pennell, Photo 1, Photo 2,  [broomrape family]

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