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95 records
Scientific Common Family
Ranunculus fascicularis early butter-cup Ranunculaceae
Ranunculus hispidus bristly buttercup Ranunculaceae
Ranunculus laxicaulis mississippi butter-cup Ranunculaceae
Ranunculus muricatus spiny-fruit buttercup Ranunculaceae
Ranunculus platensis prairie buttercup Ranunculaceae
Ranunculus pusillus low spearwort Ranunculaceae
Ranunculus sardous hairy buttercup Ranunculaceae
Raphanus raphanistrum wild radish Brassicaceae
Rapistrum rugosum annual bastardcabbage Brassicaceae
Ratibida columnifera upright prairie coneflower Asteraceae
Ratibida peduncularis naked mexicanhat Asteraceae
Ratibida pinnata prairie coneflower Asteraceae
Rayjacksonia phyllocephala camphor daisy Asteraceae
Rhamnus caroliniana carolina buckthorn Rhamnaceae
Rhamnus lanceolata lanceleaf buckthorn Rhamnaceae
Rhexia alifanus savannah meadowbeauty Melastomataceae
Rhexia cubensis west indian meadowbeauty Melastomataceae
Rhexia lutea yellow meadowbeauty Melastomataceae
Rhexia mariana maryland meadowbeauty Melastomataceae
Rhexia petiolata fringed meadowbeauty Melastomataceae
Rhexia virginica handsome harry Melastomataceae
Rhododendron canescens mountain azalea Ericaceae
Rhododendron oblongifolium texas azalea Ericaceae
Rhododendron viscosum swamp azalea Ericaceae
Rhus aromatica fragrant sumac Anacardiaceae
Rhus copallinum winged sumac Anacardiaceae
Rhus glabra smooth 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 Cyperaceae
Rhynchospora ciliaris fringed beaksedge Cyperaceae
Rhynchospora colorata narrow-leaf whitetop Cyperaceae
Rhynchospora corniculata shortbristle horned beaksedge Cyperaceae
Rhynchospora elliottii elliot's beakrush Cyperaceae
Rhynchospora fascicularis elliot's beakrush Cyperaceae
Rhynchospora filifolia threadleaf beaksedge Cyperaceae
Rhynchospora globularis globe beaksedge Cyperaceae
Rhynchospora glomerata clustered beaksedge Cyperaceae
Rhynchospora gracilenta slender beaksedge Cyperaceae
Rhynchospora grayi gray's beaksedge Cyperaceae
Rhynchospora harveyi harvey's beakrush Cyperaceae
Rhynchospora inexpansa nodding beaksedge Cyperaceae
Rhynchospora inundata narrowfruit horned beaksedge Cyperaceae
Rhynchospora latifolia sandswamp whitetop Cyperaceae
Rhynchospora macrostachya tall horned beaksedge 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 Cyperaceae
Rhynchospora rariflora few-flowered beakrush Cyperaceae
Rhynchospora scirpoides longbeak beaksedge Cyperaceae
Richardia brasiliensis tropical mexican clover Rubiaceae
Richardia scabra rough mexican clover Rubiaceae
Ricinus communis castorbean Euphorbiaceae
Rivina humilis rougeplant Phytolaccaceae
Robinia hispida bristly locust Fabaceae
Robinia pseudoacacia black locust Fabaceae
Rorippa sessiliflora stalkless yellowcress Brassicaceae
Rosa bracteata macartney rose Rosaceae
Rosa carolina carolina rose Rosaceae
Rosa laevigata cherokee rose Rosaceae
Rosa multiflora multiflora rose Rosaceae
Rotala ramosior toothcup Lythraceae
Rottboellia cochinchinensis itch grass Poaceae
Rubus argutus sawtooth blackberry Rosaceae
Rubus flagellaris northern dewberry Rosaceae
Rubus persistens persistent blackberry Rosaceae
Rubus trivialis southern dewberry Rosaceae
Rudbeckia amplexicaulis clasping coneflower Asteraceae
Rudbeckia grandiflora tall coneflower Asteraceae
Rudbeckia hirta black-eyed susan Asteraceae
Rudbeckia laciniata cutleaf coneflower Asteraceae
Rudbeckia maxima great coneflower Asteraceae
Rudbeckia missouriensis missouri orange coneflower Asteraceae
Rudbeckia scabrifolia roughleaf coneflower Asteraceae
Rudbeckia subtomentosa sweet coneflower Asteraceae
Rudbeckia texana shiny coneflower Asteraceae
Rudbeckia triloba browneyed susan Asteraceae
Ruellia caroliniensis carolina wild petunia Acanthaceae
Ruellia humilis prairie 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 Acanthaceae
Rumex acetosella common sheep sorrel Polygonaceae
Rumex crispus curly dock Polygonaceae
Rumex hastatulus heartwing sorrel Polygonaceae
Rumex obtusifolius bitter dock Polygonaceae
Rumex pulcher fiddle dock Polygonaceae
Rumex verticillatus swamp dock Polygonaceae
Ruppia maritima widgeongrass Ruppiaceae