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| scientific name | common name(s) | image gallery |
| Abies concolor | Balsam fir Colorado fir Concolor fir Oyamel de California Silver fir White balsam White fir | |
| Abies lasiocarpa | Subalpine fir | |
| Abronia villosa | Desert sand verbena Desert sand-verbena Desert sandverbena | |
| Acacia angustissima | Prairie acacia Fern acacia Prairie wattle Whiteball acacia | |
| Acacia constricta | Whitethorn acacia White-thorn acacia Mescat acacia Mescat wattle Whitethorn Vara Prieta Chaparro Prieto | |
| Acer glabrum | Rocky Mountain maple | |
| Acacia greggii | Catclaw acacia Gregg acacia Long-flower catclaw Una de gato | |
| Acer grandidentatum | Bigtooth maple Big-toothed maple Canyon maple | |
| Achnatherum hymenoides | Indian ricegrass Indian Millet Sandgrass | |
| Achnatherum speciosum | Desert needlegrass Desert rice grass Spear grass | |
| Agave americana | American century plant Century plant | |
| Agrostis exarata | Spike bentgrass Spiked bent Spike red top | |
| Agave palmeri | Palmer's century plant Palmer agave Blue century plant | |
| Agave parryi | Parry's agave Century plant Parry agave | |
| Agrostis scabra | Fly-away grass Rough bent Rough bentgrass Ticklegrass | |
| Allium cernuum | Nodding onion | |
| Allium macropetalum | Largeflower onion Large-petal onion Desert onion Desert onion lily | |
| Anisacanthus thurberi | Chuparosa Desert honeysuckle Thurber's desert honeysuckle | |
| Anemone tuberosa | Tuber anemone Desert Anemone | |
| Aquilegia chrysantha | Golden columbine Yellow columbine | |
| Arbutus arizonica | Arizona madrone | |
| Artemisia frigida | Prairie sagewort Prairie sagebrush Fringed sage Pasture sage | |
| Artemisia ludoviciana | Louisiana artemisia Louisiana sage White sage Prairie sage Silver sage White sagebrush Louisiana wormwood Silver wormwood Louisiana sagewort Gray sagewort Cudweed sagewort Mugwort wormwood | |
| Arctostaphylos pringlei | Pringle manzanita Pinkbract manzanita | |
| Aristida purpurea | Purple threeawn Purple 3-awn Purple three-awn Red threeawn | |
| Artemisia tridentata | Big sagebrush Great Basin sagebrush | |
| Asclepias asperula ssp. capricornu | Antelopehorns Antelope horns | |
| Asclepias subulata | Rush milkweed Desert milkweed Ajamete | |
| Asclepias tuberosa | Butterflyweed Butterfly milkweed Orange milkweed Pleurisy root | |
| Atriplex hymenelytra | Desert holly Silver holly | |
| Bahia absinthifolia | Hairyseed bahia Hairy-seed false goldfields Bahia Yerba raton | |
| Baileya multiradiata | Desert marigold Showy desert marigold Paper daisy Desert baileya | |
| Bouteloua curtipendula | Sideoats grama | |
| Bouteloua dactyloides | Buffalograss Buffalo grass | |
| Bouteloua eriopoda | Black grama | |
| Bouteloua gracilis | Blue grama | |
| Bouteloua hirsuta | Hairy grama | |
| Bouvardia ternifolia | Scarlet bouvardia Firecracker bush Trompetilla Clavillo | |
| Bursera microphylla | Elephant tree Elephant-tree | |
| Calochortus ambiguus | Doubting mariposa lily | |
| Calliandra eriophylla | Pink fairyduster Fairyduster Mesquitilla Mock mesquite | |
| Castilleja exserta ssp. exserta | Purple owl's clover Owl's clover Exserted indian paintbrush | |
| Carnegiea gigantea | Saguaro | |
| Castilleja indivisa | Entireleaf indian paintbrush Texas paintbrush Indian paintbrush Scarlet paintbrush Entire-leaf indian-paintbrush | |
| Campanula rotundifolia | Bluebell bellflower Bluebell-of-Scotland Harebell | |
| Centaurea americana | American star-thistle Basket-Flower Star thistle Shaving brush American basket-flower | |
| Cercis canadensis var. texensis | Texas redbud | |
| Ceanothus fendleri | Fendler ceanothus Fendler's ceanothus | |
| Ceanothus greggii | Desert ceanothus | |
| Celtis laevigata var. reticulata | Netleaf hackberry Netleaf sugar hackberry Sugar Hackberry Texas Sugarberry Palo Blanco Acibuche | |
| Cercocarpus montanus | Alderleaf mountain mahogany Alder-leaf mountain-mahogany Mountain mahogany Silverleaf mountain mahogany | |
| Chamerion angustifolium | Fireweed Willow herb | |
| Chilopsis linearis | Desert willow Flowering willow Willow-leaved catalpa Trumpet flower | |
| Chamaebatiaria millefolium | Desert sweet Fernbush Tansy bush | |
| Clematis ligusticifolia | Western white clematis Virgin's bower Pepper vine Hierba de chivo | |
| Commelina dianthifolia | Bird-bill dayflower Birdbill dayflower | |
| Coursetia glandulosa | Coursetia Rosary baby-bonnets Rosary babybonnets | |
| Crossosoma bigelovii | Crossosoma Ragged rockflower | |
| Cylindropuntia acanthocarpa var. acanthocarpa | Buckhorn cholla Staghorn cholla | |
| Cylindropuntia bigelovii | Teddybear cholla | |
| Cylindropuntia leptocaulis | Christmas cactus Christmas cholla Desert Christmas cactus Pencil cactus Tasajillo | |
| Dasiphora fruticosa ssp. floribunda | Shrubby cinquefoil Golden-hardhack | |
| Dalea greggii | Gregg dalea Gregg's prairie clover Trailing indigo bush Indigo bush | |
| Dalea purpurea var. purpurea | Purple prairie clover Violet prairie clover | |
| Dasylirion wheeleri | Common sotol Sotol Desert Spoon Desert candle | |
| Delphinium parishii | Desert larkspur Ocean-blue larkspur Paleface delphinium | |
| Delphinium scaposum | Bare-stem larkspur Tall mountain larkspur | |
| Dichelostemma capitatum ssp. capitatum | Bluedicks Wild hyacinth | |
| Distichlis spicata | Saltgrass Coastal salt grass Inland salt-grass | |
| Dodonaea viscosa | Florida hopbush Hopseed bush Switch sorrel Varnish leaf Hopbush Chapoliztle Casol | |
| Echinocereus engelmannii | Engelmann's hedgehog cactus Saints cactus Hedgehog cactus Strawberry cactus Strawberry hedgehog cactus Purple torch | |
| Elymus lanceolatus ssp. lanceolatus | Stream bank wheatgrass Thickspike wheatgrass Wild rye | |
| Elymus trachycaulus ssp. trachycaulus | Slender wheatgrass | |
| Erysimum capitatum | Prairie rocket Sand-dune wallflower Sanddune wallflower Western wallflower | |
| Eriogonum fasciculatum | Eastern Mojave buckwheat Eastern mojave wild buckwheat California buckwheat | |
| Erythrina flabelliformis | Chilicote Coral-bean Coralbean Indian bean | |
| Eragrostis intermedia | Plains lovegrass Plains Lovegrass | |
| Eriogonum inflatum | Desert trumpet Indian-pipeweed | |
| Ericameria nauseosa ssp. nauseosa var. nauseosa | Rabbitbrush Rubber rabbitbrush | |
| Eriogonum racemosum | Red-root wild buckwheat Redroot buckwheat | |
| Eschscholzia californica ssp. mexicana | Mexican gold poppy California poppy | |
| Fallugia paradoxa | Apache plume Ponil | |
| Ferocactus cylindraceus var. cylindraceus | California barrel cactus | |
| Fendlera rupicola | Cliff fendlerbush Cliff fendlerbush. False mock orange | |
| Ferocactus wislizeni | Candy barrelcactus Candy barrel cactus Fishhook barrel cactus Southwestern barrel cactus | |
| Fouquieria splendens | Ocotillo Devil’s walking stick Candlewood | |
| Fremontodendron californicum | California flannelbush Northern flannelbush Northern fremontia California slippery elm | |
| Fraxinus velutina | Arizona ash Desert ash Velvet ash | |
| Gaillardia arizonica | Arizona blanket-flower Arizona blanketflower | |
| Gaillardia pinnatifida | Blanket flower Red dome blanketflower Red-dome blanket-flower Yellow gaillardia | |
| Gaillardia pulchella | Firewheel Indian Blanket | |
| Geum triflorum | Old man's whiskers Prairie smoke Purple avens | |
| Glandularia bipinnatifida var. bipinnatifida | Prairie verbena Purple prairie verbena Dakota mock vervain Dakota vervain | |
| Glandularia gooddingii | Southwestern mock vervain Pink verbena Southwestern vervain Goodding's verbena Mojave verbena | |
| Hesperocyparis arizonica | Arizona cypress | |
| Hedysarum boreale | Boreal sweet-vetch Northern sweetvetch Utah sweetvetch | |
| Hesperostipa comata ssp. comata | Needle and thread | |
| Heliomeris multiflora var. multiflora | Showy false goldeneye Showy goldeneye | |
| Heuchera rubescens var. versicolor | Alumroot Pink alumroot | |
| Heuchera sanguinea | Coralbells New Mexican coralbells Arizona coralbells | |
| scientific name | common name(s) | image gallery |