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Index by Species

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Ranunculus abortivus
Kidney-leaved Buttercup, Kidney-leaved Crowfoot, Little-leaf Buttercup
Rhynchosida physocalyx
Bladderpod Sida
Ranunculus acris
Buttercup, Tall Buttercup, Meadow Buttercup, Common Buttercup
Rhynchospora capitellata
Brownish Beaksedge
Ranunculus cymbalaria
Seaside Crowfoot, Alkali Buttercup
Rhynchospora colorata
Starrush Whitetop
Ranunculus fascicularis
Early Buttercup
Ribes rubrum
Red Currant
Ranunculus ficaria
Lesser Celandine, Fig Buttercup, Pilewort, Small Celandine, Lesser Crowfoot, Dusky Maiden
Richardia grandiflora f.
Largeflower Mexican Clover
Ranunculus hispidus
Hispid Buttercup
Rinodina alba
Ranunculus hispidus var. caricetorum
Swamp Buttercup
Robinia ‘Purple Robe’
Black Locust
Ranunculus recurvatus
Hooked Crowfoot, Hooked Buttercup, Blisterwort
Robinia pseudoacacia
Black Locust
Ranunculus repens
Creeping Buttercup
Rorippa palustris ssp. fernaldiana
Bog Yellowcress, Bog Marshcress, Common Yellowcress, Marsh Yellowcress, Marshcress, Yellow Cress
Raphanus raphanistrum
Wild Radish
Rosa
Rose, Dwarf Rose
Raphanus sativus
Wild Radish
Rosa ‘Red Cascade’
Miniature Rose
Ratibida columnifera
Upright Prairie Coneflower, Mexican Hat
Rosa arkansana
Dwarf Prairie Rose
Ravenala madagascariensis
Traveler’s Tree
Rosa canina
Dog Rose
Rhamnus alnifolia
Alderleaf Buckthorn
Rosa carolina
Pasture Rose, Wild Rose, Carolina Rose, Low Rose
Rhamnus cathartica
Buckthorn, Common Buckthorn, Purging Buckthorn
Rosa eglanteria
Sweet-brier, Sweetbrier, Sweetbriar
Rheum ‘Ace of Hearts’
Ornamental Rhubarb
Rosa minutifolia
Otay Rose, Otay Mesa Rose
Rheum australe
Himalayan Rhubarb
Rosa multiflora
Multiflora Rose, Rambling Rose, Baby Rose, Japanese Rose, Many-flowered Rose, Seven-sisters Rose
Rheum officinale
Chinese Rhubarb [Large Leaf Form], Chinese Rhubarb
Rosa palustris
Swamp Rose
Rheum palmatum var. tanguticum ‘Red Selection’
Ornamental Rhubarb
Rosa rugosa
Rugosa Rose, Japanese Rose, Ramanas Rose, Rugosa Rosa
Rhexia virginica
Pale Meadow Beauty, Virginia Meadow Beauty, Handsome Harry, Wing-stem Meadow-pitchers
Rosa virginiana
Virginia Rose, Common Wild Rose, Prairie Rose
Rhinanthus minor
Yellow Rattle
Rosmarinus officinalis
Rosemary
Rhiocissus capensis
Roystonea regia
Royal Palm
Rhizocarpon disporum
Single-spored Map Lichen, Map Lichen
Rubus flagellaris
Northern Dewberry, Common Dewberry
Rhizocarpon geographicum
Yellow Map Lichen, World Map Lichen
Rubus fruticosus
Blackberry
Rhizophora
Rubus hispidus
Swamp Dewberry
Rhizophora mangle
Red Mangrove
Rubus idaeus
Wild Raspberry
Rhodiola rosea
Roseroot
Rubus odoratus
Purple-flowering Raspberry, Flowering Raspberry
Rhododendron
Rubus phoenicolasius
Wineberry, Wine Raspberry, Japanese Wineberry
Rhododendron ‘Crete’
Rhododendron
Rudbeckia hirta
Black-eyed Susan
Rhododendron ‘Pohjola’s Daughter’
Rudbeckia hirta cv.
Rhododendron bureavii
Ruellia californica
Rama Parda, Sonoran Desert Ruellia, Purple Ruellia, Wild Petunia, Purple Petunia
Rhododendron calendulaceum
Flame Azalea
Ruellia caroliniensis
Thickleaf Wild Petunia
Rhododendron canadense
Rhodora
Ruellia humilis
Wild Petunia
Rhododendron catawbiense
Catawba Rhododendron
Rumex acetosella
Red Sorrel, Sheep Sorrel, Sour Weed, Field Sorrel
Rhododendron cumberlandense
Cumberland Azalea
Rumex crispus
Curly Dock, Wild Rhubarb
Rhododendron kaempferi × yedoense var. poukhanense
Torch Azalea
Rumex hymenosepalus
Wild Rhubarb
Rhododendron maximum
Great Rhododendron, Great Laurel, Rosebay Rhododendron, American Rhododendron, Big Rhododendron, Great Rhododendon
Rumex obtusifolius
Bitter Dock, Broad-leaved Dock, Bitter Dock. Broad-leaved Dock
Rhododendron periclymenoides
Pink Azalea, Pinxter Flower
Rumohra adiantiformis
Silver Dollar Fern
Rhododendron smirnowii
Smirnow Rhododendron
Russelia equisetiformis
Coral Fountain, Firecracker
Rhododendron viscosum
Swamp Azalea, Swamp-honeysuckle, Clammy Azalea, Hammocksweet Azalea, Cory Azalea
Russula
Rhododendron × pennsylvanicum
Pennsylvania Rhododendron
Russula crustosa
Rhododendron × viscosepalum
Russula cystidiosa
Rhus aromatica
Skunkbrush
Russula emetica
Rhus copallinum
Shining Sumac, Winged Sumac
Russula mariae
Rhus glabra
Smooth Sumac
Russula puellaris
Rhus integrifolia
Lemonadeberry, Lemonade Berry, Lemonade Sumac
Russula sanguinea
Rosy Russula
Rhus microphylla
Littleleaf Desert Sumac, Littleleaf Sumac
Russula vinosa
Rhus trilobata
Skunkbush
Sabal minor
Dwarf Palmetto
Rhus typhina
Staghorn Sumac
Sabal palmetto f.
Cabbage Palm, Palmetto, Cabbage Palmetto, Palmetto Palm, Blue Palmetto, Carolina Palmetto, Common Palmetto, Swamp Cabbage, Sabal Palm
Rhus typhina ‘Bailtiger’
Tiger Eyes Staghorn Sumac
Sabatia kennedyana
Plymouth Gentian