Search by Scientific Name
47 records
| Scientific Name | Common Name | Other Names | Family |
|---|---|---|---|
| Ocimum basilicum | sweet basil | Lamiaceae | |
| Oenothera biennis | common evening primrose | king's cure-all | Onagraceae |
| Oenothera curtiflora | velvetweed | velvet weed, lizard-tail gaura, willow gaura, lizard tail, smallflowered gaura, velvety gaura, (spanish: linda tarde), velvetleaf gaura | Onagraceae |
| Oenothera drummondii | beach evening primrose | Onagraceae | |
| Oenothera filiformis | longflowered gaura | longflower beeblossom, largeflowered gaura | Onagraceae |
| Oenothera fruticosa | narrowleaf evening primrose | sundrops, southern sundrops | Onagraceae |
| Oenothera grandis | showy evening-primrose | largeflower eveningprimrose, showy eveningprimrose, showy evening primrose | Onagraceae |
| Oenothera humifusa | seabeach evening primrose | spreading evening-primrose | Onagraceae |
| Oenothera laciniata | cutleaf evening-primrose | cut-leaved evening primrose, cut-leaf evening-primrose, cutleaf eveningprimrose, cutleaf evening primrose | Onagraceae |
| Oenothera lindheimeri | lindheimer's butterfly-weed | white gaura, lindheimer's beeblossom, butterfly guara | Onagraceae |
| Oenothera linifolia | sand-barrens sundrops | threadleaf sundrop, threadleaf evening-primrose, threadleaf evening primrose, three leaved sundrops | Onagraceae |
| Oenothera patriciae | plains beeblossom | plains gaura | Onagraceae |
| Oenothera pilosella | meadow evening primrose | midwestern sundrops | Onagraceae |
| Oenothera speciosa | showy evening-primrose | showy evening primrose, showy eveningprimrose, pinkladies, pink evening primrose, mexican evening primrose, showy primrose, pink ladies, buttercups, pink buttercups, amapola del campo | Onagraceae |
| Oenothera triloba | stemless evening primrose | Onagraceae | |
| Oldenlandia boscii | bosc's mille graines | Rubiaceae | |
| Oldenlandia uniflora | clustered mille grains | oneflower oldenlandia | Rubiaceae |
| Onoclea sensibilis | sensitive fern | bead fern, sympathy fern | Dryopteridaceae |
| Onosmodium bejariense | soft-hair marbleseed | Boraginaceae | |
| Ophioglossum crotalophoroides | bulbous adderstongue | bulbous adder's-tongue | Ophioglossaceae |
| Ophioglossum vulgatum | southern adderstongue | southern adder's-tongue, herbe sans couture, adder's-tongue, adder's-tongue fern | Ophioglossaceae |
| Oplismenus hirtellus | basketgrass | Poaceae | |
| Opuntia humifusa | devil's-tongue | low prickly pear, smooth prickly pear | Cactaceae |
| Opuntia macrorhiza | twistspine pricklypear | plains pricklypear, bigroot pricklypear, common prickly pear | Cactaceae |
| Opuntia pusilla | cockspur pricklypear | drummond's prickly pear | Cactaceae |
| Opuntia stricta | erect pricklypear | Cactaceae | |
| Orbexilum pedunculatum | sampson's snakeroot | Fabaceae | |
| Orbexilum simplex | single-stem scurfpea | singlestem leather-root, simple scurfpea | Fabaceae |
| Ornithogalum umbellatum | sleepydick | star of bethlehem, pyrenees star of bethlehem | Liliaceae |
| Orobanche uniflora | one flowered broomrape | naked broom-rape, naked broomrape, oneflowered broomrape, one-flower cancer root | Orobanchaceae |
| Orontium aquaticum | goldenclub | neverwet | Araceae |
| Oryza punctata | red rice | Poaceae | |
| Oryza sativa | rice | Poaceae | |
| Osmanthus americanus | devilwood | american olive, wild olive | Oleaceae |
| Osmunda regalis | royal fern | Osmundaceae | |
| Osmundastrum cinnamomea | cinnamon fern | cinnamon-fern | Osmundaceae |
| Ostrya virginiana | hophornbeam | eastern hophornbeam, eastern hop-hornbeam, ironwood, american hop-hornbeam | Betulaceae |
| Ottelia alismoides | ducklettuce | duck lettuce, duck-lettuce | Hydrocharitaceae |
| Oxalis corniculata | creeping woodsorrel | yellow woodsorrel, ihi'ai, creeping yellow woodsorrel, creeping ladies sorrel, agrito, jocoyote | Oxalidaceae |
| Oxalis dillenii | slender yellow woodsorrel | yellow wood sorrel, gray-green wood sorrel, southern yellow wood-sorrel | Oxalidaceae |
| Oxalis rubra | windowbox woodsorrel | pink wood sorrel | Oxalidaceae |
| Oxalis stricta | yellow wood-sorrel | common yellow oxalis, sheep sorrel, sourgrass, toad sorrel, yellow woodsorrel, erect woodsorrel, upright yellow wood-sorrel, upright yellow woodsorrel, chanchaquilla | Oxalidaceae |
| Oxalis violacea | violet wood-sorrel | violet woodsorrel, purple woodsorrel | Oxalidaceae |
| Oxycaryum cubense | cuban bulrush | Cyperaceae | |
| Oxydendrum arboreum | sourwood | sorrel tree | Ericaceae |
| Oxypolis filiformis | water cowbane | Apiaceae | |
| Oxypolis rigidior | stiff cowbane | cowbane, water-dropwort | Apiaceae |