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| scientific name | common name(s) | image gallery |
| Cyperus ochraceus | Pond flatsedge Yellow Sedge | |
| Cyperus odoratus | Fragrant flatsedge Fragrant Sedge | |
| Cyperus pseudovegetus | Marsh flatsedge Marsh Flat Sedge | |
| Dalea aurea | Golden dalea Golden prairie clover | |
| Dalea frutescens | Black dalea Black prairie clover | |
| Dalea greggii | Gregg dalea Gregg's prairie clover Trailing indigo bush Indigo bush | |
| Dasylirion texanum | Texas sotol Sotol | |
| Dasylirion wheeleri | Common sotol Sotol Desert Spoon Desert candle | |
| Datura wrightii | Sacred thorn-apple Jimsonweed Thorn apple Datura Angel Trumpet Sacred datura | |
| Desmanthus illinoensis | Illinois bundleflower Bundleflower Prairie bundle flower Prickleweed Illinois Desmanthus Prairie mimosa | |
| Diospyros texana | Texas persimmon Mexican persimmon Black persimmon Chapote Chapote prieto | |
| Dyschoriste linearis | Snake herb Polkadots Narrowleaf dyschoriste | |
| Echinocereus reichenbachii | Lace Cactus Lace hedgehog cactus Órgano-pequeño de colores Purple candle | |
| Echinocereus reichenbachii ssp. reichenbachii | Lace Cactus Lace hedgehog cactus | |
| Echinocactus texensis | Chisos Hedgehog Devil’s head Horse crippler | |
| Ehretia anacua | Anacua Sugarberry Anacua Anaqua Knockaway Sandpaper tree | |
| Elymus canadensis | Canada wild rye Canadian wildrye Prairie wildrye Nodding wildrye | |
| Eleocharis rostellata | Beaked spikerush Leap Frog Spike Rush | |
| Epipactis gigantea | Chatterbox Orchid Giant Hellebore Stream orchid | |
| Equisetum hyemale var. affine | Scouringrush horsetail | |
| Eragrostis intermedia | Plains lovegrass Plains Lovegrass | |
| Eryngium leavenworthii | Leavenworth's eryngo Eryngo | |
| Erigeron modestus | Plains fleabane Prairie fleabane | |
| Erioneuron pilosum | Hairy woollygrass Hairy tridens | |
| Eriochloa sericea | Texas cupgrass | |
| Eragrostis spectabilis | Purple lovegrass Purple love grass Purple plains lovegrass Tumblegrass Petticoat climber | |
| Euphorbia antisyphilitica | Candelilla Wax plant | |
| Eustoma exaltatum ssp. exaltatum | Blue marsh lily Bluebell gentian Catchfly prairie gentian Small bluebell Western blue gentian | |
| Eustoma exaltatum ssp. russellianum | Texas bluebells Texas bluebell Bluebell Showy prairie gentian Prairie gentian | |
| Euphorbia marginata | Snow on the mountain Snow-on-the-mountain | |
| Eupatorium serotinum | Lateflowering thoroughwort White boneset Late boneset Late-flowering boneset | |
| Evax prolifera | Bighead pygmycudweed Rabbit Tobacco | |
| Eysenhardtia texana | Texas kidneywood Kidneywood Bee-Brush Vara dulce | |
| Galphimia angustifolia | Narrow-leaf Goldshower Narrowleaf goldshower Thryallis | |
| Gaura lindheimeri | Lindheimer's beeblossom White gaura Butterfly gaura | |
| Garrya ovata ssp. lindheimeri | Lindheimer's silktassel Lindheimer Silk Tassel Lindheimer's Garrya | |
| Gaillardia pulchella | Firewheel Indian Blanket | |
| Gelsemium sempervirens | Carolina jessamine Yellow jessamine Evening trumpetflower Poor man's rope | |
| Glandularia bipinnatifida | Purple prairie verbena Prairie verbena Dacota vervain Dakota mock vervain Moradilla | |
| Glandularia bipinnatifida var. bipinnatifida | Prairie verbena Purple prairie verbena Dakota mock vervain Dakota vervain | |
| Heterotheca canescens | Gray golden-aster Hoary false goldenaster | |
| Hedeoma drummondii | Drummond's false pennyroyal Limoncillo Mock Pennyroyal | |
| Helianthus maximiliani | Maximilian sunflower Max sunflower | |
| Hesperaloe parviflora | Red yucca Coral yucca Red flowered false yucca Redflower false yucca Samandoque Yellow yucca | |
| Hilaria belangeri var. belangeri | Curly-mesquite | |
| Hibiscus lasiocarpos | Rose-mallow Rosemallow Woolly mallow Wooly Rose-mallow | |
| Hymenocallis liriosme | Spider Lily Spring Spider Lily Spring spiderlily | |
| Hydrolea ovata | Blue Water Leaf Hairy Hydrolea Ovate false fiddleleaf | |
| Hydrocotyle umbellata | Manyflower marshpennywort Water-pennywort Money-plant | |
| Hydrocotyle verticillata var. verticillata | Pennywort Water-Pennywort Whorled marshpennywort Money-plant | |
| Ibervillea lindheimeri | Lindheimer's globeberry Balsam gourd Globe berry Snake apple | |
| Ilex decidua | Possumhaw Possumhaw Holly Deciduous Holly Winterberry Deciduous yaupon | |
| Ilex vomitoria | Yaupon Yaupon holly Cassina | |
| Ipomoea cordatotriloba var. cordatotriloba | Tievine Sharp-pod Morning Glory Purple Bindweed Tie Vine | |
| Iris brevicaulis | Zigzag iris | |
| Iris virginica | Virginia iris Great Blue Flag Southern blueflag | |
| Iris virginica var. shrevei | Shreve's iris Virginia iris Southern blue flag Blue flag | |
| Jatropha dioica | Leatherstem Leather Stem Rubber Plant | |
| Justicia americana | American water-willow Water-willow | |
| Juniperus ashei | Ashe juniper Ashe's juniper Mountain cedar Blueberry juniper | |
| Juniperus virginiana | Eastern red cedar Eastern redcedar Virginia juniper | |
| Kosteletzkya virginica | Virginia saltmarsh mallow Virginia fen-rose Seashore mallow Salt Marsh-mallow | |
| Larrea tridentata | Creosote bush Greasewood Hediondilla Governadora Guamis | |
| Lantana urticoides | Texas lantana Calico bush West Indian shrub-verbena | |
| Leucophyllum frutescens | Cenizo Purple sage Texas ranger Texas barometer bush Texas silverleaf Texas sage | |
| Liatris mucronata | Cusp gayfeather Gayfeather Blazing star Narrow-leaf gayfeather Texas gayfeather Cusp blazing star | |
| Linum rigidum | Stiffstem flax Large-flower yellow flax Yellow flax | |
| Lobelia cardinalis | Cardinal flower | |
| Lupinus texensis | Texas bluebonnet Bluebonnet Texas lupine Buffalo clover Wolf-flower | |
| Lythrum alatum | Winged lythrum | |
| Lycium andersonii | Anderson wolfberry Red-berry desert-thorn Water jacket | |
| Lycium berlandieri | Berlandier's wolfberry Wolfberry | |
| Lygodesmia texana | Texas skeletonplant Texas skeleton weed Skeleton-plant Purple dandelion | |
| Maurandella antirrhiniflora | Snapdragon Vine Roving sailor Climbing snapdragon Little snapdragon vine | |
| Malvaviscus arboreus | Turkscap Wax mallow Bleeding hearts Mexican apple Manzanilla | |
| Malvaviscus arboreus var. drummondii | Turk's cap or Turkscap Drummond's turkscap Wax mallow Drummond wax-mallow Red mallow Texas mallow Mexican apple Manzanilla Sleeping hibiscus Bleeding hearts | |
| Marsilea macropoda | Bigfoot water clover Water clover Clover-fern | |
| Matelea reticulata | Green milkweed vine Net vein milkvine Netted milkvine Pearl milkweed Vine | |
| Mahonia swaseyi | Texas barberry Texas Oregon-grape | |
| Machaeranthera tanacetifolia | Tanseyleaf tansyaster Tahoka Daisy Tansy Aster | |
| Mahonia trifoliolata | Agarita Agarito Algerita Laredo mahonia Laredo Oregon-grape Trifoliate barberry | |
| Marsilea vestita | Hairy water clover Water clover | |
| Merremia dissecta | Alamo Vine Noyau vine Correhuela de las Doce | |
| Melampodium leucanthum | Blackfoot Daisy Rock daisy Plains blackfoot | |
| Mimosa borealis | Fragrant mimosa Pink Mimosa | |
| Mimosa roemeriana | Roemer's mimosa Sensitive Briar | |
| Morella cerifera | Wax myrtle Southern bayberry Candleberry | |
| Monarda citriodora | Lemon beebalm Horsemint Purple horsemint Lemon mint Plains horsemint Lemon horsemint | |
| Monarda fistulosa | Wild bergamot Beebalm | |
| Muhlenbergia capillaris | Gulf muhly Hair-awn muhly Hairy-awn muhly Hair grass Pink muhly | |
| Muhlenbergia dubia | Pine muhly | |
| Muhlenbergia lindheimeri | Lindheimer's muhly Big muhly Lindheimer muhly | |
| Muhlenbergia reverchonii | Seep muhly | |
| Muhlenbergia rigens | Deergrass Meadow muhly Deer muhly | |
| Nassella tenuissima | Mexican Feathergrass Mexican Wiregrass Finestem needlegrass Ponytail grass Texas tussock | |
| Nelumbo lutea | American lotus Yellow water lotus Yellow lotus | |
| Nolina lindheimeriana | Devil's shoestring Devil’s-shoestring Ribbon grass | |
| Nolina texana | Texas sacahuista Texas beargrass Basket grass Sacahuista Bunchgrass | |
| Nuphar lutea | Yellow pond-lily Cow lily Spatter dock Yellow cow lily | |
| Nyctaginia capitata | Devil's bouquet Scarlet muskflower | |
| scientific name | common name(s) | image gallery |