Special Collections
Texas Blackland Prairies
This EPA Level III ecoregion encompasses all or part of 42 Texas counties. Lying entirely within the state of Texas, this ecoregion covers approximately the same land area as the Texas Parks & Wildlife Department’s Blackland Prairie vegetative region. It is comprised of two parallel bands separated by the East Central Texas Plains ecoregion and extending from southern Texas north to very near the Oklahoma border.Printer Friendly: Species List | List with Images | List with QR Tags to Mobile
| scientific name | common name(s) | image gallery |
| Oenothera macrocarpa | Bigfruit Evening-primrose Missouri Evening-primrose Fluttermill Big-fruit Evening-primrose Missouri Primrose Bigfruit Evening Primrose | |
| Oenothera macrocarpa ssp. macrocarpa | Bigfruit Evening-primrose Fluttermill Missouri Evening Primrose | |
| Oenothera mexicana | Mexican Evening Primrose | |
| Oenothera pallida | Pale Evening-primrose | |
| Oenothera patriciae | Plains Beeblossom Plains Gaura | |
| Oenothera pallida ssp. runcinata | White Sands Evening Primrose | |
| Oenothera primiveris | Desert Evening-primrose Yellow-flower Desert Evening-primrose Bottle Evening Primrose Large Yellow Desert Primrose | |
| Oenothera rhombipetala | Fourpoint Evening-primrose Four-point Evening Primrose Diamond Petal Primrose Greater Four-point Evening-primrose | |
| Oenothera sinuosa | Wavyleaf Beeblossom Wavyleaf Gaura | |
| Oenothera spachiana | Spach's Evening-primrose | |
| Oenothera speciosa | Pink Evening Primrose Showy Evening Primrose Mexican Evening Primrose Showy Primrose Pink Ladies Buttercups Pink Buttercups | |
| Oenothera suffrutescens | Scarlet Beeblossom Scarlet Gaura | |
| Oenothera suffulta | Kisses Wild Honeysuckle Beeblossom Roadside Gaura | |
| Oenothera tetraptera | Fourwing Evening Primrose | |
| Oenothera triloba | Stemless Evening-primrose Stemless Evening Primrose | |
| Oenothera villosa | Hairy Evening Primrose | |
| Oenothera villosa ssp. villosa | Hairy Evening-primrose | |
| Oenothera xerogaura | Drummond's Beeblossom Drummond's Gaura | |
| Oldenlandia boscii | Bosc's Mille Graines | |
| Oligoneuron nitidum | Shiny Goldenrod | |
| Oligoneuron rigidum | Stiff Goldenrod Hard-leaf Goldenrod | |
| Oligoneuron rigidum var. rigidum | Stiff Goldenrod | |
| Oldenlandia uniflora | Clustered Mille Graines | |
| Onosmodium bejariense | Soft-hair Marbleseed | |
| Onosmodium bejariense var. bejariense | Soft-hair Marbleseed False Gromwell | |
| Onosmodium bejariense var. occidentale | Western Marbleseed | |
| Onosmodium helleri | Heller's Marbleseed Marble-seed | |
| Onoclea sensibilis | Sensitive Fern Bead Fern Sympathy Fern | |
| Ophioglossum crotalophoroides | Bulbous Adder's-tongue | |
| Ophioglossum crotalophoroides var. crotalophoroides | Bulbous Adder's-tongue | |
| Ophioglossum engelmannii | Limestone Adder's-tongue Limestone Adderstongue | |
| Opuntia engelmannii | Cactus Apple Prickly Pear | |
| Opuntia engelmannii var. lindheimeri | Texas Prickly Pear Lindheimer's Prickly Pear Lindheimer Prickly Pear | |
| Opuntia engelmannii var. linguiformis | Cactus Apple | |
| Oplismenus hirtellus | Basketgrass | |
| Oplismenus hirtellus ssp. setarius | Basketgrass | |
| Opuntia humifusa | Low Prickly Pear Smooth Prickly Pear Devil's Tongue | |
| Opuntia macrorhiza | Bigroot Prickly Pear Twist-spine Prickly Pear Common Prickly Pear Plains Prickly Pear | |
| Opuntia macrocentra | Purple Pricklypear Purple Prickly Pear Long-spined Prickly Pear Black Spine Prickly Pear | |
| Opuntia phaeacantha | Tulip Prickly Pear Brownspine Prickly Pear Cactus Purple-fruited Prickly Pear Brown-spined Prickly Pear New Mexico Prickly Pear Desert Prickly Pear | |
| Ophioglossum vulgatum | Southern Adder's-tongue Adder's-tongue Adder's-tongue Fern | |
| Orobanche fasciculata | Clustered Broomrape Yellow Broomrape | |
| Orobanche ludoviciana | Louisiana Broomrape | |
| Orobanche ludoviciana ssp. multiflora | Manyflower Broomrape | |
| Orbexilum pedunculatum | Sampson's Snakeroot | |
| Osmunda cinnamomea | Cinnamon Fern | |
| Osmunda cinnamomea var. cinnamomea | Cinnamon Fern | |
| Osmorhiza longistylis | Longstyle Sweetroot Aniseroot Sweet-cicely Wild Licorice | |
| Osmunda regalis | Royal Fern | |
| Osmunda regalis var. spectabilis | Royal Fern | |
| scientific name | common name(s) | image gallery |
