Combination search
Looking for commercially available native plant species suitable to your state or region, try the Recommended Species page.
| scientific name | common name(s) | image gallery |
| Oenothera cinerea ssp. cinerea | High-plains Beeblossom Wooly Beeblossom | |
| Oenothera cinerea ssp. parksii | Parks' Beeblossom Woolly Butterfly-weed Parks Gaura | |
| Oenothera coryi | El Paso Evening Primrose El Paso Evening-primrose | |
| Oenothera drummondii | Beach Evening-primrose Beach Evening Primrose | |
| Oenothera filiformis | Longflower Beeblossom Longflower Gaura Large-flowered Gaura Kearney Gaura Tall Gaura | |
| Oenothera flava | Yellow Evening-primrose Long-tube Evening-primrose Shortfin Evening-primrose Yellow Evening Primrose | |
| Oenothera flava ssp. flava | Long-tubed Evening-primrose Yellow Evening Primrose Yellow Evening-primrose | |
| Oenothera gayleana | Gypsum Evening Primrose | |
| Oenothera havardii | Havard's Evening Primrose Havard's Evening-primrose | |
| Oenothera lindheimeri | White Gaura Butterfly Gaura Lindheimer's Beeblossom Lindheimer's Gaura | |
| Oenothera macrocarpa | Bigfruit Evening-primrose Missouri Evening-primrose Fluttermill Big-fruit Evening-primrose Missouri Primrose Bigfruit Evening Primrose | |
| Oenothera macrocarpa ssp. incana | Bigfruit Evening-primrose Silver Leaf Primrose Bigfruit Evening Primrose | |
| Oenothera macrocarpa ssp. macrocarpa | Bigfruit Evening-primrose Fluttermill Missouri Evening Primrose | |
| Oenothera macrocarpa ssp. oklahomensis | Oklahoma Evening Primrose Oklahoma Evening-primrose | |
| Oenothera mckelveyae | Mckelvey's Beeblossom Mckelvey's Evening Primrose Mckelvey's Evening-primrose | |
| Oenothera mexicana | Mexican Evening Primrose | |
| Oenothera pallida ssp. runcinata | White Sands Evening Primrose | |
| Oenothera pilosella | Meadow Evening-primrose | |
| Oenothera pilosella ssp. sessilis | Meadow Evening Primrose Meadow Evening-primrose Prairie Sundrops | |
| Oenothera rosea | Rose Evening Primrose | |
| Oenothera sinuosa | Wavyleaf Beeblossom Wavyleaf Gaura | |
| Oenothera speciosa | Pink Evening Primrose Showy Evening Primrose Mexican Evening Primrose Showy Primrose Pink Ladies Buttercups Pink Buttercups | |
| Oenothera texensis | Texas Evening Primrose Texas Evening-primrose | |
| Oenothera villosa | Hairy Evening Primrose | |
| Oenothera xerogaura | Drummond's Beeblossom Drummond's Gaura | |
| Oldenlandia boscii | Bosc's Mille Graines | |
| Oldenlandia corymbosa | Flat-top Mille Graines | |
| Oligoneuron nitidum | Shiny Goldenrod | |
| Oligoneuron rigidum | Stiff Goldenrod Hard-leaf Goldenrod | |
| Oligoneuron rigidum var. humile | Stiff Goldenrod | |
| Oligoneuron rigidum var. rigidum | Stiff Goldenrod | |
| 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 californicum | California Adder's Tongue California Adder's-tongue California Adderstongue | |
| Ophioglossum crotalophoroides | Bulbous Adder's-tongue | |
| Ophioglossum engelmannii | Limestone Adder's-tongue Limestone Adderstongue | |
| Operculina pinnatifida | Tansyleaf Lidpod Tansy-leaf Lidpod | |
| Ophioglossum polyphyllum | Large Adder's-tongue Large Adders Tongue Large Adderstongue | |
| Orontium aquaticum | Goldenclub Neverwet | |
| Orbexilum pedunculatum | Sampson's Snakeroot | |
| Orbexilum pedunculatum var. pedunculatum | Sampson's Snakeroot | |
| Orbexilum simplex | Singlestem Leather-root | |
| Osmunda cinnamomea | Cinnamon Fern | |
| Osmunda cinnamomea var. cinnamomea | Cinnamon Fern | |
| Osmorhiza longistylis | Longstyle Sweetroot Aniseroot Sweet-cicely Wild Licorice | |
| Osmorhiza mexicana | Mexican Sweetcicely Mexican Sweet Cicely Mexican Sweetroot Livermore Sweet-cicely | |
| Osmorhiza mexicana ssp. bipatriata | Mexican Sweetcicely Mexican Sweet Cicely Mexican Sweetroot Livermore Sweet-cicely | |
| scientific name | common name(s) | image gallery |
