Ranunculus abortivus --- littleleaf buttercup
Ranunculus acriformis --- sharpleaf buttercup
Ranunculus acriformis var. acriformis --- sharpleaf buttercup
Ranunculus acriformis var. montanensis --- mountain sharp buttercup
Ranunculus acris --- tall buttercup
Ranunculus acris var. acris --- showy buttercup
Ranunculus adoneus --- alpine buttercup
Ranunculus adoneus var. adoneus --- alpine buttercup
Ranunculus adoneus var. alpinus --- alpine buttercup
Ranunculus alismifolius --- plantainleaf buttercup
Ranunculus alismifolius var. alismifolius --- plantainleaf buttercup
Ranunculus alismifolius var. davisii --- Davis' buttercup
Ranunculus alismifolius var. montanus --- waterplantain buttercup
Ranunculus aquatilis --- whitewater crowfoot
Ranunculus cardiophyllus --- heartleaf buttercup
Ranunculus cymbalaria --- alkali buttercup
Ranunculus eschscholtzii --- Eschscholtz's buttercup
Ranunculus eschscholtzii var. eschscholtzii --- Eschscholtz's buttercup
Ranunculus eschscholtzii var. trisectus --- threesection buttercup
Ranunculus eximius --- tundra buttercup
Ranunculus flabellaris --- yellow water buttercup
Ranunculus flammula --- greater creeping spearwort
Ranunculus flammula var. filiformis --- greater creeping spearwort
Ranunculus glaberrimus --- sagebrush buttercup
Ranunculus glaberrimus var. ellipticus --- elliptical buttercup
Ranunculus gmelinii --- Gmelin's buttercup
Ranunculus hyperboreus --- high northern buttercup
Ranunculus inamoenus --- graceful buttercup
Ranunculus inamoenus var. alpeophilus --- graceful buttercup
Ranunculus inamoenus var. inamoenus --- graceful buttercup
Ranunculus jovis --- Utah buttercup
Ranunculus karelinii --- ice cold buttercup
Ranunculus longirostris --- longbeak buttercup
Ranunculus macounii --- Macoun's buttercup
Ranunculus occidentalis --- western buttercup
Ranunculus occidentalis var. occidentalis --- western buttercup
Ranunculus orthorhynchus --- straightbeak buttercup
Ranunculus orthorhynchus var. orthorhynchus --- straightbeak buttercup
Ranunculus pedatifidus --- surefoot buttercup
Ranunculus pedatifidus var. affinis --- northern buttercup
Ranunculus pensylvanicus --- Pennsylvania buttercup
Ranunculus pygmaeus --- pygmy buttercup
Ranunculus ranunculinus --- tadpole buttercup
Ranunculus repens --- creeping buttercup
Ranunculus sceleratus --- cursed buttercup
Ranunculus sceleratus var. multifidus --- cursed buttercup
Ranunculus suksdorfii --- Suksdorf's buttercup
Ranunculus trichophyllus --- threadleaf crowfoot
Ranunculus trichophyllus var. eradicatus --- threadleaf crowfoot
Ranunculus trichophyllus var. trichophyllus --- threadleaf crowfoot
Ranunculus uncinatus --- woodland buttercup
Ranunculus uncinatus var. parviflorus --- Idaho buttercup
Ranunculus uncinatus var. uncinatus --- woodland buttercup
Ranunculus verecundus --- wetslope buttercup
Raphanus sativus --- cultivated radish
Ratibida columnifera --- upright prairie coneflower
Ratibida tagetes --- green prairie coneflower
Rayjacksonia annua --- viscid tansyaster
Redfieldia flexuosa --- blowout grass
Reseda lutea --- yellow mignonette
Rhamnus alnifolia --- alderleaf buckthorn
Rhamnus cathartica --- common buckthorn
Rheum rhabarbarum --- garden rhubarb
Rhodiola integrifolia --- ledge stonecrop
Rhodiola integrifolia ssp. integrifolia --- ledge stonecrop
Rhodiola rhodantha --- redpod stonecrop
Rhus glabra --- smooth sumac
Rhus trilobata --- skunkbush sumac
Rhus trilobata var. trilobata --- skunkbush sumac
Ribes americanum --- American black currant
Ribes aureum --- golden currant
Ribes aureum var. aureum --- golden currant
Ribes aureum var. villosum --- golden currant
Ribes cereum --- wax currant
Ribes cereum var. cereum --- wax currant
Ribes cereum var. pedicellare --- whisky currant
Ribes hudsonianum --- northern black currant
Ribes hudsonianum var. petiolare --- western black currant
Ribes inerme --- whitestem gooseberry
Ribes inerme var. inerme --- whitestem gooseberry
Ribes lacustre --- prickly currant
Ribes montigenum --- gooseberry currant
Ribes oxyacanthoides --- Canadian gooseberry
Ribes oxyacanthoides ssp. oxyacanthoides --- Canadian gooseberry
Ribes oxyacanthoides ssp. setosum --- inland gooseberry
Ribes rubrum --- cultivated currant
Ribes viscosissimum --- sticky currant
Robinia ×holdtii
Robinia neomexicana --- New Mexico locust
Robinia neomexicana var. neomexicana --- New Mexico locust
Robinia pseudoacacia --- black locust
Rorippa alpina --- alpine yellowcress
Rorippa calycina --- persistent sepal yellowcress
Rorippa curvipes --- bluntleaf yellowcress
Rorippa curvipes var. curvipes --- bluntleaf yellowcress
Rorippa curvipes var. truncata --- bluntleaf yellowcress
Rorippa curvisiliqua --- curvepod yellowcress
Rorippa curvisiliqua var. curvisiliqua --- curvepod yellowcress
Rorippa curvisiliqua var. orientalis --- oriental yellowcress
Rorippa curvisiliqua var. spatulata --- curvepod yellowcress
Rorippa nasturtium-aquaticum --- watercress
Rorippa palustris --- bog yellowcress
Rorippa palustris ssp. fernaldiana --- Fernald's yellowcress
Rorippa palustris ssp. hispida --- hispid yellowcress
Rorippa sinuata --- spreading yellowcress
Rorippa sphaerocarpa --- roundfruit yellowcress
Rorippa tenerrima --- Modoc yellowcress
Rosa acicularis --- prickly rose
Rosa acicularis ssp. sayi --- prickly rose
Rosa arkansana --- prairie rose
Rosa arkansana var. arkansana --- prairie rose
Rosa arkansana var. suffulta --- prairie rose
Rosa nutkana --- Nootka rose
Rosa nutkana var. hispida --- bristly Nootka rose
Rosa nutkana var. nutkana --- Nootka rose
Rosa woodsii --- Woods' rose
Rosa woodsii var. woodsii --- Woods' rose
Rubus arcticus --- arctic blackberry
Rubus arcticus ssp. acaulis --- dwarf raspberry
Rubus deliciosus --- delicious raspberry
Rubus idaeus --- American red raspberry
Rubus idaeus ssp. idaeus --- American red raspberry
Rubus idaeus ssp. strigosus --- grayleaf red raspberry
Rubus laciniatus --- cutleaf blackberry
Rubus parviflorus --- thimbleberry
Rubus parviflorus var. parviflorus --- thimbleberry
Rubus pubescens --- dwarf red blackberry
Rubus pubescens var. pubescens --- dwarf red blackberry
Rudbeckia hirta --- blackeyed Susan
Rudbeckia hirta var. pulcherrima --- blackeyed Susan
Rudbeckia laciniata --- cutleaf coneflower
Rudbeckia laciniata var. ampla --- cutleaf coneflower
Rudbeckia laciniata var. laciniata --- cutleaf coneflower
Rudbeckia occidentalis --- western coneflower
Rumex acetosa --- garden sorrel
Rumex acetosa ssp. acetosa --- garden sorrel
Rumex acetosa ssp. alpestris --- garden sorrel
Rumex acetosella --- common sheep sorrel
Rumex aquaticus --- western dock
Rumex aquaticus var. fenestratus --- western dock
Rumex crispus --- curly dock
Rumex crispus ssp. crispus --- curly dock
Rumex densiflorus --- denseflowered dock
Rumex hymenosepalus --- canaigre dock
Rumex maritimus --- golden dock
Rumex patientia --- patience dock
Rumex paucifolius --- alpine sheep sorrel
Rumex paucifolius ssp. paucifolius --- alpine sheep sorrel
Rumex salicifolius --- willow dock
Rumex salicifolius var. denticulatus --- toothed willow dock
Rumex salicifolius var. mexicanus --- Mexican dock
Rumex stenophyllus --- narrowleaf dock
Rumex venosus --- veiny dock
Ruppia cirrhosa --- spiral ditchgrass

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