Abies,1Abutilon,72Acalypha,66Acanthaceae,107Acanthus Family,107Acer,70Aceraceae,70Acerates,90Achillea,130,131Acnida,30Acorus,8Actaea,39Actinomeris,128Adder's Mouth,17Adenocaulon,118Adlumia,41Aesculus,70Agastache,97Agrimonia,55Agrimony,55Agropyron,6Agrostemma,33Agrostis,6Ailanthus,65Aizoaceae,31Alder,22Alder, Black,69Aletris,13Alfalfa,61Alisma,3Alismaceae,3Allium,13Alnus,22Alopecurus,4Alsike Clover,61Althaea,72Alum Root,50,51Alyssum,42,46Alyssum, Yellow,42,46Amaranth Family,30Amaranthaceae,30Amaranthus,30Amaryllidaceae,14Amaryllis Family,14Ambrosia,114Amelanchier,55American Columbo,88American Ipecac,57Ammophila,4Amorpha,58Amphicarpa,59Anacardiaceae,68Anagallis,87Anaphalis,120Andromeda,86Andropogon,5Androsace,87Anemone,38,39Anemone, Rue,39Anemone, Wood,38Anemonella,39Angelica,82Anonaceae,40Antennaria,120Anthemis,130Antirrhinum,103Anychia,31Apios,58Aplectrum,16Apocynaceae,90Apocynum,90Appalachian Cherry,54Apple,54Apple of Peru,101Aquifoliaceae,69Aquilegia,36Arabis,46,47Araceae,8Aralia,80Araliaceae,80Arbutus, Trailing,85Arceuthobium,25Arctium,117Arctostaphylos,85Arenaria,32Arethusa,16Arisaema,8Aristolochia,25Aristolochiaceae,25Arnica,123Arrow Arum,9Arrow Grass,3Arrow Grass Family,3Arrow-head,3Arrow Wood,111Artemisia,119Artichoke, Jerusalem,129Arum Family,8Asarum,25Asclepias,90,91Asclepiadaceae,90Ash,88Ash, Mountain,52Ash, Prickly,65Asimina,40Asparagus,10Aspen,19Aster,132-134Atriplex,29Avena,6Avens,56,57Baby's Breath,34Balm of Gilead,19Balsam,1Balsam Poplar,19Balsaminaceae,71Baneberry,39Baptisia,61Barbarea,44Barberry,40Barberry Family,40Barnyard Grass,5Barren Strawberry,55Bartonia,88Basil,97Basil-thyme,97Basswood,72Bayberry,21Beach Grass,4Beach Pea,59Beaked Hazel,22Bearberry,85Beard Grass,5Beard-tongue,104Bedstraw,108,109Beech,22Beech Drops,84,106Beech Family,22Beggar Lice,94Beggar Ticks,124Bellflower,112Bellflower Family,112Bellwort,12Benzoin,41Berberidaceae,40Berberis,40Bergamot Mint,98Berula,81Betula,21,22Betulaceae,21Bidens,123,124Bilberry,86,87Bindweed,91,92Bindweed, Black,28Birch,21,22Birch Family,21Bird-foot Violet,75Birthwort Family,25Bishop's Cap,51Bistort,28Bitter Cress,45,47Bitter Dock,26Bitter Nut,21Bittersweet,100Bitter-sweet,69Black Alder,69Black Ash,88Blackberry,53Black Bindweed,28Black Cherry,54Black Currant,49,50Black-eyed Susan,128Black Haw,111Black Jack Oak,22Black Locust,58Black Maple,70Black Medick,60Black Mustard,44Black Oak,23Black Raspberry,53Black Snakeroot,82Black Spruce,1Black Swallow-wort,90Black Walnut,21Black Willow,20Bladder Campion,34Bladder Nut,69Bladder Nut Family,69Bladderwort,106Bladderwort Family,105Blazing Star,13,121Blephilia,96Blite,29Bloodroot,41Bloody Dock,26Blue Ash,88Bluebell,93,94Blueberry,86Blue Cohosh,40Blue-eyed Grass,15Blue-eyed Mary,104Blue Flag,15Blue Grass,7Blue Hearts,104Blue-joint,5Bluets,108Blue Violet,76Blueweed,94Boehmeria,24Bog Rosemary,86Boltonia,131Boneset, False,122Borage,93Borage Family,93Boraginaceae,93Borago,93Bowman's Root,57Box Elder,70Brasenia,35Brassica,43,44Brauneria,131Braya,47Bristly Locust,58Bristly Sarsaparilla,80Brome-grass,7Bromus,7Broom-rape Family,106Buchnera,104Buckbean,88Buckeye,70Buckhorn,107Buckthorn,71Buckthorn Family,71Buckwheat,27Buckwheat, False,28Buckwheat Family,25Buffalo Berry,77Buffalo Bur,100Buffalo Clover,61Bugbane,39Bugle,98Bugle Weed,95Bug-seed,28Bulrush,7Bur Clover,60Bur Cucumber,112Burdock,117Bur Marigold,124Burnet,57Bur Oak,23Bur-reed,2Bur-reed Family,2Bush Clover,61,63Bush Honeysuckle,110Butter-and-eggs,102Buttercup,36,37,38Butterfly Weed,91Butternut,21Butterwort,105Button Bush,108Cacalia,122Cactaceae,77Cactus Family,77Cakile,45Calamagrostis,5Calamint,97Calla,9Callirhoe,73Callitrichaceae,68Callitriche,68Calopogon,16Caltha,36Calypso,17Camassia,14Camelina,42Camomile,130Campanula,112Campanulaceae,112Campion,33,34Canada Thistle,118Canada Violet,76Canadian Blue Grass,7Cancer-root,106Cannabis,24Caper Family,47Capparidaceae,47Caprifoliaceae,109Capsella,46Caraway,83Cardamine,45,47Cardinal Flower,113Carduus,118Carex,8Carpet-weed,31Carpet-weed Family,31Carpinus,21Carrion-flower,11Carrot, Wild,82Carum,83Carya,21Caryophyllaceae,31Cashew Family,68Cassia,60Castalia,35Castanea,22Castilleja,102Catchfly,33,34Catnip,98Cat-tail,2Cat-tail Family,2Caulophyllum,40Ceanothus,71Cedar,1Celandine,41Celandine Poppy,41Celastraceae,69Celastrus,69Celtis,24Cenchrus,5Centaurea,121Centaurium,89Centaury,89Cephalanthus,108Cerastium,33Ceratophyllaceae,34Ceratophyllum,34Cercis,58Chaerophyllum,83Chamaedaphne,86Chamaelirium,13Charlock,44Cheat,7Chelidonium,41Chelone,104Chenopodiaceae,28Chenopodium,28,29Cherry,54Cherry, Ground,101Chervil,83Chestnut,22Chickweed,32,33Chickweed, Mouse-ear,33Chicory,115Chimaphila,85Chiogenes,85Chives, Wild,13Chokeberry,55Choke Cherry,54Chrysanthemum,121,130,131Chrysosplenium,50Cichorium,115Cicuta,82Cimicifuga,39Cinquefoil,52,56,57Circaea,78Cirsium,117,118Cistaceae,74Cladium,8Clammy Locust,58Clammy-weed,47Claytonia,34Clearweed,24Cleft Phlox,92Clematis,35Climbing Fumitory,41Climbing Rose,52Clintonia,13Clover,61Clover, Bush,61,63Clover, Hop,60Clover, Prairie,60Clover, Sweet,61Cocklebur,114Cockle, Corn,33Coffee-tree,58Cohosh, Blue,40Colic-root,13Collinsia,104Collinsonia,95Coltsfoot,122,130Columbine,36Comandra,24Comfrey,93,94Commelina,9Commelinaceae,9Common Blue Violet,76Common Cat-tail,2Common Vetch,