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Index by Species

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