| Latin Name | Common Name | Family | Synonyms | Edibility Rating | Medicinal Rating |
| Abies balsamea | Balsam Fir | Pinaceae | Pinus balsamea. | 3 | 5 |
| Abies concolor | Colorado Fir, White fir | Pinaceae | Picea concolor. | 0 | 2 |
| Abies fraseri | She Balsam, Fraser fir, Southern Balsam Fir | Pinaceae | Pinus fraseri. | 1 | 3 |
| Acacia verticillata | Prickly Moses | Fabaceae or Leguminosae | | 1 | 0 |
| Acaenia anserinifolia | Pirri-Pirri Bur | Rosaceae | A. novae-zelandiae. A. sanguisorbae. | 1 | 1 |
| Acanthocereus tetragonus | Pitahaya. Barbed-wire cactus. | Cactaceae | Acanthocereus acutangulus (hort ex Pfeiffer) A. Berg.;
Acanthocereus floridanus Small ex Br. & Rose;
Acanthocereus pentagonus (L.)Br. & Rose;
Acanthocereus pitajaya (DC.) Dugand ex Crozat;
Acanthocereus princeps (Pfeiffer) Backenberg;
Cactus pentagonus L;
Cactus prismaticus Willd.;
Cactus tetragonus L.;
Cereus pentagonus (L.) Haw.;
Cereus princeps Pfeiffer;
Cereus tetragonus L.(Mill.);
Cereus acutangulus hort. ex. Pfeiffer; [1b] | 3 | 0 |
| Acourtia microcephala | Sacapellote | Asteraceae or Compositae | Perezia microcephala. | 0 | 1 |
| Acrocarpus fraxinifolius | Pink Cedar, Shingle Tree | Fabaceae | Acrocarpus combretiflorus Teijsm. & Binn. Acrocarpus grandis (Miq.) Miq. Mezoneurum grande Miq. | 0 | 0 |
| Adonis aestivalis | Pheasant's Eye, Summer pheasant's eye | Ranunculaceae | | 0 | 1 |
| Adonis vernalis | Pheasant's Eye, Spring pheasant's eye | Ranunculaceae | | 0 | 3 |
| Aechmea magdalenae | Pingwing. Ixtle, Pita plant | Bromeliaceae | Ananas magdalenae (Andre) Standl. ex Standl. & S.Calderen Bromelia longissima Pos.-Arang. Bromelia magdalenae (Andre) C.H.Wright Chevaliera magdalenae Andre Chevalieria magdalenae Andre | 3 | 0 |
| Aesculus californica | Californian Buckeye, California Horsechestnut | Hippocastanaceae | Pavia californica. | 3 | 1 |
| Aesculus indica | Indian Horse Chestnut | Hippocastanaceae | Pavia indica. | 3 | 1 |
| Agathis moorei | Pacific Kauri, Moore Kauri | Araucariaceae | Agathis corbassonii de Laub. Dammara lanceolata Vieill. Dammara moorei Lindl. Salisburyodendron corb | 1 | 0 |
| Agave salmiana | Pulque Agave, Giant Agave | Asparagaceae | Agave atrovirens sigmatophylla A.Berger Agave coarctata Jacobi Agave cochlearis Jacobi Agave compluviata Trel. Agave jacobiana Salm-Dyck Agave lehmannii Jacobi Agave mitraeformis Jacobi Agave quiotifera Trel. ex Ochot. Agave tehuacanensis Karw. ex Salm-Dyck | 3 | 0 |
| Albizia lucidior | Potka siris tree | Fabaceae | Albizia gamblei Prain Albizia lucida (Roxb.) Benth. Albizia meyeri Ricker Inga lucidior Steud. Mimosa lucida Roxb. | 0 | 0 |
| Allium aflatunense | Persian Onion, Ornamental Onion | Alliaceae | | 2 | 2 |
| Allium cepa aggregatum | Potato Onion | Alliaceae | | 4 | 3 |
| Allium drummondii | Prairie Onion, Drummond's onion | Alliaceae | A. nuttallii | 3 | 2 |
| Allium stellatum | Prairie Onion, Autumn onion | Alliaceae | | 3 | 2 |
| Aloe perryi | Perry's Aloe | Xanthorrhoeaceae | | 0 | 4 |
| Alstroemeria aurea | Peruvian Lily | Amaryllidaceae | A. aurantiaca. D.Don. | 1 | 0 |
| Alstroemeria haemantha | Purple-spot parrot-lily | Amaryllidaceae | A. simsii | 3 | 0 |
| Alstroemeria pelegrina | Peruvian Lily | Amaryllidaceae | | 2 | 0 |
| Althaea cannabina | Palm-leaf marshmallow | Malvaceae | A. kotschyi. A. narbonensis. | 0 | 0 |
| Amaranthus albus | Prostrate Pigweed | Amaranthaceae | | 2 | 0 |
| Amaranthus cruentus | Purple Amaranth, Red amaranth | Amaranthaceae | A. hybridus cruentus. Thell. | 4 | 0 |
| Amaranthus hypochondriacus | Prince's Feather, Prince-of-wales feather | Amaranthaceae | A. hybridus hypochondriachus. (L.)Thell. | 4 | 3 |
| Amaranthus powellii | Powell's Amaranth | Amaranthaceae | | 2 | 0 |
| Amaranthus retroflexus | Pigweed, Redroot amaranth, Wild Beet | Amaranthaceae | | 3 | 2 |
| Amelanchier alnifolia semiintegrifolia | Pacific Serviceberry | Rosaceae | A. alnifolia. non Nutt. A. florida. A. oxyodon | 5 | 1 |
| Amelanchier interior | Pacific serviceberry | Rosaceae | | 3 | 0 |
| Amelanchier pallida | Pale Serviceberry | Rosaceae | A. alnifolia. non Nutt. A. gracilis. A. siskiyouensis. A. subintegra. | 3 | 1 |
| Amelanchier sanguinea | Roundleaf Serviceberry, Gaspé serviceberry | Rosaceae | Pyrus sanguinea. | 3 | 0 |
| Ampelopsis arborea | Pepper Vine | Vitaceae | | 2 | 0 |
| Ampelopsis brevipedunculata | Porcelain Berry, Amur peppervine, Blueberry Climber, Porcelain Berry Vine | Vitaceae | A. heterophylla amurensis. Cissus brevipedunculata. | 2 | 2 |
| Anacamptis pyramidalis | Pyramidal Orchid | Orchidaceae | Orchis pyramidalis. | 2 | 1 |
| Ananas comosus | Pineapple | Bromeliaceae | Ananas ananas (L.) H.Karst. ex Voss Ananas argentata J.C.Wendl. ex Schult. & Schult.f. Ananas aurata | 5 | 2 |
| Anaphalis margaritacea | Pearly Everlasting, Western pearly everlasting | Asteraceae or Compositae | Antennaria margaritacea. Gnaphalium margaritaceum. | 1 | 2 |
| Anethum graveolens | Dill | Apiaceae or Umbelliferae | Peucedanum graveolens. | 4 | 3 |
| Angelica atropurpurea | Purplestem Angelica | Apiaceae or Umbelliferae | Archangelica atropurpurea. (L.)Hoffm. | 2 | 2 |
| Angelica decursiva | | Apiaceae or Umbelliferae | Peucedanum decursivum. (Miq.)Maxim. | 2 | 2 |
| Annona liebmanniana | Posh-te | Annonaceae | Annona scleroderma Saff. Annona testudinea Saff. | 4 | 0 |
| Aphanes arvensis | Parsley Piert, Field parsley piert | Rosaceae | | 2 | 3 |
| Aplectrum hyemale | Putty Root, Adam and eve | Orchidaceae | | 0 | 1 |
| Arachis glabrata | Perennial peanut | Fabaceae | Arachis prostrata Benth. | 0 | 0 |
| Arachis hypogaea | Peanut | Fabaceae or Leguminosae | Arachis nambyquarae. Lathyrus esquirolii. | 4 | 2 |
| Arachis pintoi | Pinto peanut | Fabaceae | None Known | 0 | 0 |
| Araucaria angustifolia | Parana Pine. Brazilian-pine, Candelabra-tree. | Araucariaceae | Araucaria brasiliana A.Rich. Araucaria brasiliensis A.Rich. Araucaria brasiliensis Lamb. ex Loudon Columbea angustifolia Bertol. | 2 | 0 |
| Arctostaphylos nevadensis | Pine-Mat Manzanita | Ericaceae | A. parviflora. Uva-ursi nevadensis. | 2 | 1 |
| Arctostaphylos parryana | Parry Manzanita | Ericaceae | | 1 | 0 |
| Arctostaphylos pungens | Pointleaf Manzanita | Ericaceae | | 1 | 1 |
| Argemone mexicana | Prickly Poppy, Mexican pricklypoppy | Papaveraceae | A. ochroleuca. | 1 | 3 |
| Aristolochia macrophylla | Pipevine, Dutchman's Pipe | Aristolochiaceae | | 0 | 1 |
| Aronia arbutifolia | Red Chokeberry | Rosaceae | Pyrus arbutifolia. | 2 | 0 |
| Aronia prunifolia | Purple Chokeberry | Rosaceae | | 2 | 0 |
| Arthropodium milleflorum | Pale Vanilla Lily | Asphodelaceae | A. paniculatum. A. pendulum. | 3 | 0 |
| Asclepias hallii | Purple Silkweed, Hall's milkweed | Asclepiadaceae | | 3 | 1 |
| Asclepias lanceolata | Purple Silkweed, Fewflower milkweed | Asclepiadaceae | A. paupercula. | 2 | 1 |
| Asclepias purpurascens | Purple Milkweed | Asclepiadaceae | | 2 | 1 |
| Asclepias sullivantii | Prairie milkweed | Asclepiadaceae | | 0 | 0 |
| Asclepias tuberosa | Pleurisy Root, Butterfly milkweed, Rolfs' milkweed, Indian Paintbrush | Asclepiadaceae | | 3 | 3 |
| Asimina triloba | Papaw | Annonaceae | Annona triloba. | 4 | 2 |
| Asparagus sauveolens | | Asparagaceae | Protasparagus suaveolens. (Burch.)Oberm. | 1 | 0 |
| Asparagus setaceus | Asparagus Fern, Common asparagus fern, Plumosa Fern | Asparagaceae | Protasparagus setaceus. (Kunth.)Oberm. | 1 | 0 |
| Aspidosperma polyneuron | Peroba Rosa | Apocynaceae | | 0 | 2 |
| Asplenium scolopendrium | Hart's Tongue Fern | Polypodiaceae | Phyllitis scolopendrium. (L.)Newman. Scolopendrium officinale. S. vulgaris. | 0 | 2 |
| Aster puniceus | Purplestem Aster | Asteraceae or Compositae | A. hispidus. Lam. | 0 | 2 |
| Astilbe chinensis | Pumila Spirea,Chinese Astilbe | Saxifragaceae | | 1 | 0 |
| Astragalus adscendens | Persian Manna | Fabaceae or Leguminosae | | 2 | 0 |
| Astragalus pictus-filifolius | Painted Milkvetch | Fabaceae or Leguminosae | A. ceramicus. | 4 | 0 |
| Astroloma pinifolium | Pine Heath | Epacridaceae | | 3 | 0 |
| Athyrium niponicum | Painted Fern, Japanese Silver Painted Fern | Dryopteridaceae | | 1 | 0 |
| Atriplex powellii | Powell's Saltweed | Chenopodiaceae | A. philonitra. | 2 | 0 |
| Attalea colenda | Palma real, Chivila | Arecaceae | Ynesa colenda O.F.Cook | 4 | 0 |
| Bactris gasipaes | Peach Palm, Pupunha | Arecaceae | Bactris caribaea H.Karst. Bactris ciliata (Ruiz & Pav.) Mart. Bactris coccinea Barb.Rodr. Bactris da | 5 | 2 |
| Baptisia bracteata | Plains Wild Indigo, Longbract wild indigo, False Indigo, Cream Wild Indigo | Fabaceae or Leguminosae | B. leucophaea. Nutt. B. villosa. Auct. | 0 | 2 |
| Barringtonia novae hiberniae | Pao Nut | Lecythidaceae | Barringtonia brosimos Merr. & L.M.Perry Barringtonia excelsa Guill. Barringtonia oblongifolia R.Knuth | 3 | 2 |
| Barringtonia procera | Pao nuts, Cut nut | Lecythidaceae | Barringtonia guppyana R.Knuth Barringtonia magnifica Lauterb. Barringtonia schuchardtiana K.Schum. Butonica procera Miers | 3 | 2 |
| Bauhinia thonningii | Camel's foot tree, monkey bread | Fabaceae | Piliostigma thonningii (Schum.) Milne-Redh. | 3 | 2 |
| Betula papyrifera | Paper Birch, Mountain paper birch, Kenai birch | Betulaceae | Betula alba var. papyrifera, Betula lenta var. papyrifera | 3 | 2 |
| Borassus flabellifer | Palmyra Palm | Arecaceae | Borassus flabelliformis L. | 4 | 2 |
| Boronia pinnata | Pinnate Boronia | Rutaceae | | 0 | 0 |
| Botrychium australe | Parsley Fern | Ophioglossaceae | B. cicutarium. B. ternatum. B. virginianum. non Swartz. | 1 | 0 |
| Brassica oleracea ramosa | Perpetual Kale | Brassicaceae or Cruciferae | | 4 | 0 |
| Brassica rapa chinensis | Pak Choi | Brassicaceae or Cruciferae | B. chinensis. B. napus chinensis. (L.)Schulz. B. parachinensis. | 4 | 1 |
| Bromelia pinguin | Pinuela. Pinguin | Bromeliaceae | Agallostachys fastuosa (Lindl.) Beer Agallostachys pinguin (L.) Beer Ananas pinguin (L.) Gaertn. Bromelia fastuosa Lindl. Bromelia ignea Beer Bromelia sepiaria Schult. & Schult.f. Karatas pinguin (L.) Mill. | 3 | 0 |
| Broussonetia papyrifera | Paper Mulberry | Moraceae | | 4 | 2 |
| Bulnesia sarmientoi | Pao Santo | Zygophyllaceae | No synonyms are recorded for this name. | 0 | 1 |
| Bunium bulbocastanum | Pig Nut, Earth-nut | Apiaceae or Umbelliferae | Apium bulbocastanum. Ligusticum bulbocastanum. | 4 | 1 |
| Cacalia atriplicifolia | Pale indian plantain | Asteraceae or Compositae | Arnoglossum atriplicifolium (L.)H.E.Robins. | 1 | 1 |
| Caesalpinia echinata | Pau Brasil, Brazil Wood, Indian Savin | Fabaceae | Guilandina echinata (Lam.) Spreng. | 0 | 2 |
| Cajanus cajan | Pigeon Pea, Puerto Rico Bean, Gandul, Dhal, Congo Pea | Fabaceae | Cajanus indicus Spreng. Cytisus cajan L. | 4 | 2 |
| Calamus caesius | Rotan Sega | Arecaceae | Palmijuncus caesius (Blume) Kuntze.Calamus glaucescens Blume [Illegitimate]. Palmijuncus glaucescens | 2 | 0 |
| Calamus ovoideus | Egg-shaped Rattan. Rotan Ovoid | Arecaceae | Palmijuncus ovoideus (Thwaites ex Trimen) Kuntze | 2 | 0 |
| Calamus radiatus | Rotan Rays. Radial Leaf Rotan | Arecaceae | Palmijuncus radiatus (Thwaites) Kuntze | 0 | 0 |
| Calandrinia polyandra | Parakeelya | Portulacaceae | | 2 | 0 |
| Calendula officinalis | Pot Marigold, Common Marigold, Scotch Marigold, Ruddles, Pot Marigold | Asteraceae or Compositae | Calendula aurantiaca. Calendula eriocarpa. Calendula hydruntina. Caltha officinalis. | 3 | 5 |
| Callirhoe involucrata | Poppy Mallow, Purple poppymallow, Winecup, Finger Poppy Mallow | Malvaceae | C. lineariloba. Malva involucrata. | 3 | 2 |
| Campanula parryi | Parry's Bellflower, Idaho bellflower | Campanulaceae | | 1 | 1 |
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