Search by Scientific Name
95 records
| Scientific Name | Common Name | Other Names | Family |
|---|---|---|---|
| Ranunculus fascicularis | early butter-cup | tufted buttercup, prairie buttercup, early buttercup | Ranunculaceae |
| Ranunculus hispidus | bristly buttercup | marsh buttercup | Ranunculaceae |
| Ranunculus laxicaulis | mississippi butter-cup | mississippi buttercup | Ranunculaceae |
| Ranunculus muricatus | spiny-fruit buttercup | spinyfruit buttercup | Ranunculaceae |
| Ranunculus platensis | prairie buttercup | Ranunculaceae | |
| Ranunculus pusillus | low spearwort | weak buttercup | Ranunculaceae |
| Ranunculus sardous | hairy buttercup | blisterwort | Ranunculaceae |
| Raphanus raphanistrum | wild radish | Brassicaceae | |
| Rapistrum rugosum | annual bastardcabbage | Brassicaceae | |
| Ratibida columnifera | upright prairie coneflower | mexican hat, thimbleflower | Asteraceae |
| Ratibida peduncularis | naked mexicanhat | naked prairie coneflower | Asteraceae |
| Ratibida pinnata | prairie coneflower | pinnate prairie coneflower, grayhead prairie coneflower, grayhead mexican hat, yellow coneflower, grayhead coneflower | Asteraceae |
| Rayjacksonia phyllocephala | camphor daisy | Asteraceae | |
| Rhamnus caroliniana | carolina buckthorn | carolina false buckthorn, yellow buckthorn, indian cherry, yellowwood, polecat-tree | Rhamnaceae |
| Rhamnus lanceolata | lanceleaf buckthorn | lance-leaf buckthorn, lance-leaved buckthorn | Rhamnaceae |
| Rhexia alifanus | savannah meadowbeauty | Melastomataceae | |
| Rhexia cubensis | west indian meadowbeauty | Melastomataceae | |
| Rhexia lutea | yellow meadowbeauty | yellow meadow beauty | Melastomataceae |
| Rhexia mariana | maryland meadowbeauty | meadow beauty, deer-grass | Melastomataceae |
| Rhexia petiolata | fringed meadowbeauty | Melastomataceae | |
| Rhexia virginica | handsome harry | common meadowbeauty, wing-stem meadow-pitcher, common meadow beauty | Melastomataceae |
| Rhododendron canescens | mountain azalea | piedmont azalea, southern pinxterbloom azalea, wild azalea, honeysuckle azalea, sweet azalea, hoary azalea, southern pinxterflower, piedmont-azalea | Ericaceae |
| Rhododendron oblongifolium | texas azalea | Ericaceae | |
| Rhododendron viscosum | swamp azalea | clammy azalea, texas azalea, swamp honeysuckle, cory azalea, hammock sweet azalea, swamp-azalea | Ericaceae |
| Rhus aromatica | fragrant sumac | polecat bush, sweet-scented sumac, lemon sumac | Anacardiaceae |
| Rhus copallinum | winged sumac | flameleaf sumac, shining sumac, mountain sumac, dwarf sumac | Anacardiaceae |
| Rhus glabra | smooth sumac | common sumac, scarlet sumac | Anacardiaceae |
| Rhynchosia latifolia | prairie snoutbean | Fabaceae | |
| Rhynchosia minima | least snoutbean | Fabaceae | |
| Rhynchosia reniformis | dollarleaf | Fabaceae | |
| Rhynchospora caduca | anglestem beaksedge | Cyperaceae | |
| Rhynchospora capitellata | brownish beaksedge | brownish beakrush | Cyperaceae |
| Rhynchospora ciliaris | fringed beaksedge | Cyperaceae | |
| Rhynchospora colorata | narrow-leaf whitetop | starrush whitetop, star sedge, white-topped sedge, whitetop sedge, star rush | Cyperaceae |
| Rhynchospora corniculata | shortbristle horned beaksedge | horned rush | Cyperaceae |
| Rhynchospora elliottii | elliot's beakrush | elliott's beaksedge | Cyperaceae |
| Rhynchospora fascicularis | elliot's beakrush | elliott's beaksedge | Cyperaceae |
| Rhynchospora filifolia | threadleaf beaksedge | Cyperaceae | |
| Rhynchospora globularis | globe beaksedge | globe beakrush, pinehill beakrush | Cyperaceae |
| Rhynchospora glomerata | clustered beaksedge | cluster beak-rush | Cyperaceae |
| Rhynchospora gracilenta | slender beaksedge | Cyperaceae | |
| Rhynchospora grayi | gray's beaksedge | Cyperaceae | |
| Rhynchospora harveyi | harvey's beakrush | harvey's beaksedge | Cyperaceae |
| Rhynchospora inexpansa | nodding beaksedge | Cyperaceae | |
| Rhynchospora inundata | narrowfruit horned beaksedge | Cyperaceae | |
| Rhynchospora latifolia | sandswamp whitetop | sand-swamp whitetop sedge, tall whitetop sedge, whitetop sedge, sand-swamp whitetop, tall whitetop, white top, colorful rush | Cyperaceae |
| Rhynchospora macrostachya | tall horned beaksedge | horned rush, horned-rush | Cyperaceae |
| Rhynchospora miliacea | millet beaksedge | Cyperaceae | |
| Rhynchospora mixta | mingled beaksedge | Cyperaceae | |
| Rhynchospora nitens | shortbeak beaksedge | Cyperaceae | |
| Rhynchospora perplexa | pineland beaksedge | Cyperaceae | |
| Rhynchospora plumosa | plumed beaksedge | Cyperaceae | |
| Rhynchospora pusilla | humble beakrush | fairy beaksedge | Cyperaceae |
| Rhynchospora rariflora | few-flowered beakrush | fewflower beaksedge | Cyperaceae |
| Rhynchospora scirpoides | longbeak beaksedge | Cyperaceae | |
| Richardia brasiliensis | tropical mexican clover | brazil pusley | Rubiaceae |
| Richardia scabra | rough mexican clover | florida-pusley | Rubiaceae |
| Ricinus communis | castorbean | higuerilla | Euphorbiaceae |
| Rivina humilis | rougeplant | pigeonberry, baby-peppers, bloodberry, coralito | Phytolaccaceae |
| Robinia hispida | bristly locust | standing sweet pea, rose-acacia | Fabaceae |
| Robinia pseudoacacia | black locust | false acacia, robinia, honey locust | Fabaceae |
| Rorippa sessiliflora | stalkless yellowcress | Brassicaceae | |
| Rosa bracteata | macartney rose | Rosaceae | |
| Rosa carolina | carolina rose | pasture rose | Rosaceae |
| Rosa laevigata | cherokee rose | Rosaceae | |
| Rosa multiflora | multiflora rose | japanese rose | Rosaceae |
| Rotala ramosior | toothcup | lowland toothcup, rotala, lowland rotala, tooth-cup | Lythraceae |
| Rottboellia cochinchinensis | itch grass | itch grass | Poaceae |
| Rubus argutus | sawtooth blackberry | prickly florida blackberry | Rosaceae |
| Rubus flagellaris | northern dewberry | Rosaceae | |
| Rubus persistens | persistent blackberry | Rosaceae | |
| Rubus trivialis | southern dewberry | dewberry, zarzamora | Rosaceae |
| Rudbeckia amplexicaulis | clasping coneflower | clasping-coneflower, claspingleaf coneflower, clasping-leaf coneflower | Asteraceae |
| Rudbeckia grandiflora | tall coneflower | rough coneflower, plantainleaf coneflower | Asteraceae |
| Rudbeckia hirta | black-eyed susan | blackeyed susan, common black-eyed susan, brown-eyed susan | Asteraceae |
| Rudbeckia laciniata | cutleaf coneflower | green-headed coneflower, greenhead coneflower, cutleaf coneflower, wild goldenglow, sochan | Asteraceae |
| Rudbeckia maxima | great coneflower | giant coneflower, giant brown-eyed susan | Asteraceae |
| Rudbeckia missouriensis | missouri orange coneflower | Asteraceae | |
| Rudbeckia scabrifolia | roughleaf coneflower | sabine coneflower, bog brown-eyed susan | Asteraceae |
| Rudbeckia subtomentosa | sweet coneflower | sweet black-eyed susan | Asteraceae |
| Rudbeckia texana | shiny coneflower | texas coneflower | Asteraceae |
| Rudbeckia triloba | browneyed susan | brown-eyed-susan, thin-leaved coneflower, three-lobed rudbeckia | Asteraceae |
| Ruellia caroliniensis | carolina wild petunia | Acanthaceae | |
| Ruellia humilis | prairie petunia | fringeleaf wild petunia, wild petunia, low ruellia, hairy ruellia, low wild petunia | Acanthaceae |
| Ruellia noctiflora | nightflowering wild petunia | Acanthaceae | |
| Ruellia nudiflora | violet wild petunia | Acanthaceae | |
| Ruellia pedunculata | stalked wild petunia | Acanthaceae | |
| Ruellia simplex | softseed wild petunia | britton's wild petunia. mexican petunia | Acanthaceae |
| Rumex acetosella | common sheep sorrel | sheep-sorrel, sour-grass | Polygonaceae |
| Rumex crispus | curly dock | narrowleaf dock, sour dock, yellow dock | Polygonaceae |
| Rumex hastatulus | heartwing sorrel | heart sorrel | Polygonaceae |
| Rumex obtusifolius | bitter dock | bluntleaf dock | Polygonaceae |
| Rumex pulcher | fiddle dock | fiddle-dock | Polygonaceae |
| Rumex verticillatus | swamp dock | water dock | Polygonaceae |
| Ruppia maritima | widgeongrass | beaked ditch-grass, widgeon-grass, | Ruppiaceae |