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| scientific name | common name(s) | image gallery |
| Adiantum capillus-veneris | Southern maidenhair fern Common maidenhair fern Maidenhair fern Venus hair fern | |
| Aesculus glabra var. arguta | Ohio buckeye White buckeye Texas buckeye | |
| Aesculus pavia | Scarlet Buckeye Red buckeye Firecracker plant | |
| Aesculus pavia var. pavia | Scarlet buckeye Red buckeye Southern buckeye Firecracker plant | |
| Agalinis edwardsiana | Plateau false foxglove Plateau agalinis Plateau gerardia Plateau false-foxglove | |
| Ageratina havanensis | Havana snakeroot Mistflower Shrubby boneset White mistflower White shrub mistflower | |
| Agalinis heterophylla | Prairie false foxglove Prairie agalinis Prairie false-foxglove | |
| Ageratina wrightii | White mistflower Wright's snakeroot White boneset White ageratum | |
| Ampelopsis arborea | Peppervine | |
| Amphiachyris dracunculoides | Prairie broomweed Broomweed | |
| Amorpha fruticosa | Indigo bush False indigo bush False indigo Desert false indigo | |
| Amorpha roemeriana | Roemer's false indigo | |
| Amblyolepis setigera | Huisache daisy Butterfly daisy Honey daisy | |
| Andropogon gerardii | Big bluestem Turkeyfoot | |
| Andropogon glomeratus | Bushy bluestem Brushy bluestem | |
| Aquilegia canadensis | Eastern red columbine Wild red columbine | |
| Aquilegia chrysantha var. hinckleyana | Hinckley's golden columbine Yellow columbine Hinckley columbine Capote columbine | |
| Aristida oligantha | Prairie threeawn Oldfield (Prairie) 3-awn Oldfield threeawn | |
| Aristida purpurea var. nealleyi | Blue threeawn | |
| Aristida purpurea var. purpurea | Purple threeawn Red threeawn | |
| Asclepias asperula | Spider milkweed Antelope horns Green-flowered milkweed Spider antelope-horns | |
| Asclepias asperula ssp. capricornu | Antelopehorns Antelope horns | |
| Bauhinia lunarioides | Anacacho orchid tree Anacacho bauhinia Orchid tree Texas plume | |
| Baccharis neglecta | False Willow Jara dulce Poverty Weed Roosevelt Weed | |
| Berchemia scandens | Alabama supple-jack Alabama supplejack Rattan-vine | |
| Bouteloua curtipendula | Sideoats grama | |
| Bouteloua gracilis | Blue grama | |
| Bouteloua hirsuta | Hairy grama | |
| Bouteloua hirsuta var. pectinata | Hairy grama Tall grama | |
| Bothriochloa laguroides ssp. torreyana | Silver Beard Grass Silver beardgrass Silver Bluestem | |
| Bothriochloa longipaniculata | Longspike beardgrass Longspike Silver Bluestem | |
| Bouteloua rigidiseta | Texas grama | |
| Bouteloua trifida | Red grama | |
| Callicarpa americana | American beautyberry French mulberry | |
| Capsicum annuum var. glabriusculum | Chile pequin Bird pepper Turkey pepper Cayenne pepper | |
| Castilleja indivisa | Entireleaf indian paintbrush Texas paintbrush Indian paintbrush Scarlet paintbrush Entire-leaf indian-paintbrush | |
| Callirhoe involucrata | Winecup Purple poppy mallow | |
| Callirhoe involucrata var. lineariloba | Poppy mallow Purple poppymallow White poppy mallow White winecup Winecup | |
| Callirhoe leiocarpa | Tall poppymallow Annual winecup Tall poppy-mallow | |
| Callirhoe pedata | Finger Poppy-mallow Palmleaf poppymallow Standing Winecup | |
| Castilleja purpurea | Prairie paintbrush Downy Indian paintbrush Purple paintbrush Lemon paintbrush Purple painted cup | |
| Camassia scilloides | Atlantic camas Wild hyacinth | |
| Centaurea americana | American star-thistle Basket-Flower Star thistle Shaving brush American basket-flower | |
| Centaurium beyrichii | Mountain pink Meadow pink Catchfly Quinineweed | |
| Cercis canadensis var. canadensis | Eastern redbud | |
| Cercis canadensis var. mexicana | Mexican redbud | |
| Cephalanthus occidentalis | Common buttonbush Buttonbush Button willow | |
| Centaurium texense | Lady Bird's centaury | |
| Chasmanthium latifolium | Inland sea oats Indian wood oats Wild oats River oats Flathead oats Upland Oats Upland Sea Oats | |
| Cirsium texanum | Texas thistle | |
| scientific name | common name(s) | image gallery |