Noms scientifiques : R
- Ramonda myconi
- Ranunculus acris
- Ranunculus acris 'Multiplex'
- Ranunculus alpestris
- Ranunculus asiaticus
- Ranunculus asiaticus 'Gambit Mix'
- Ranunculus cortusifolius
- Ranunculus ficaria
- Ranunculus lanuginosus
- Raoulia australis
- Raphanus sativus
- Raphanus sativus subsp. sativus
- Raphanus sativus var. oleiformis
- Rapistrum perenne
- Ravenala madagascariensis
- Rebutia deminuta var. pseudominuscula
- Rebutia heliosa var. albiflora
- Rebutia minuscula var. grandiflora
- Rebutia pseudominuscula f. schneideriana
- Rehmannia elata
- Rehmannia piasezkii
- Renanthera Kalson
- Renanthera Mandai Ruby
- Renanthera Singaporean
- Renanthopsis Dhanabalan
- Reseda alba
- Reseda lutea
- Reseda luteola
- Retama monosperma
- Reynoutria japonica
- Reynoutria sachalinensis
- Rhamnus globosus
- Rhaphiolepis indica 'Springtime'
- Rhaphiolepis umbellata
- Rhapis humilis
- Rhaponticum centauroides
- Rhaponticum pulchrum
- Rhaponticum scariosum subsp. rhaponticum
- Rheum officinale
- Rheum palmatum
- Rheum palmatum var. tanguticum
- Rheum rhabarbarum
- Rheum rhaponticum
- Rheum undulatum
- Rheum x cultorum
- Rhexia mariana
- Rhinanthus alectorolophus
- Rhizophora apiculata
- Rhodanthe manglesii
- Rhodiola pachyclados
- Rhodiola rosea
- Rhodochiton atrosanguineum
- Rhododendron Alfred
- Rhododendron Amber Kiss
- Rhododendron Anatevka
- Rhododendron Anna Netrebko
- Rhododendron Apricot Fantasy
- Rhododendron Aureovariegatum
- Rhododendron Belami
- Rhododendron Belkanto
- Rhododendron Berliner Liebe
- Rhododendron Blattgold
- Rhododendron Blaue Jungs
- Rhododendron Blinklicht
- Rhododendron Blue Bell
- Rhododendron Blue Peter
- Rhododendron Bollywood
- Rhododendron Brasilia
- Rhododendron Burgundula
- Rhododendron Bürgerpark Bremen
- Rhododendron Catharine van Tol
- Rhododendron Chevalier Félix de Sauvage
- Rhododendron Cunningham's White
- Rhododendron Cuyabeno
- Rhododendron Dear Barbara
- Rhododendron Djingistan
- Rhododendron Dolcemente
- Rhododendron Dufthecke
- Rhododendron Duke of York
- Rhododendron Earl of Donoughmore
- Rhododendron Edward S. Rand
- Rhododendron Eruption
- Rhododendron Fiorette
- Rhododendron Francesca
- Rhododendron Furnivall's Daughter
- Rhododendron Goldbukett
- Rhododendron Golden Everest
- Rhododendron Goldkrone
- Rhododendron Gräfin Sonja
- Rhododendron Hachmann's Mazurka
- Rhododendron Hachmanns Charmant
- Rhododendron Hachmanns Feuerschein
- Rhododendron Hachmanns Matador
- Rhododendron Hans Hachmann
- Rhododendron Helen Martin
- Rhododendron Herbstfreude
- Rhododendron Holbein
- Rhododendron Husky
- Rhododendron Jack Bunnell
- Rhododendron Kokardia
- Rhododendron Kurfürstin Sophie
- Rhododendron Lady Stuart of Wortley
- Rhododendron Lady de Rothschild
- Rhododendron Lavender Princess
- Rhododendron Le Progrès
- Rhododendron Lotte August
- Rhododendron Marcel Menard
- Rhododendron Metallica
- Rhododendron Mevrouw P.A. Colijn
- Rhododendron Midnight Magic
- Rhododendron Moon Fire
- Rhododendron Mrs J.G. Millais
- Rhododendron Nova Zembla
- Rhododendron Olga
- Rhododendron Phillip
- Rhododendron Pink Purple Dream
- Rhododendron President Roosevelt
- Rhododendron Professor Hugo de Vries
- Rhododendron Purpureum Elegans
- Rhododendron Ronsdorf
- Rhododendron Saskia
- Rhododendron Scintillation
- Rhododendron Showgirl
- Rhododendron Silvervelours
- Rhododendron Sun Glory
- Rhododendron Toco
- Rhododendron Totally Awesome
- Rhododendron Viscy
- Rhododendron arborescens
- Rhododendron arboreum
- Rhododendron augustinii
- Rhododendron brachycarpum
- Rhododendron bureavii
- Rhododendron bureavii 'Hydon Velvet'
- Rhododendron calendulaceum
- Rhododendron calophytum
- Rhododendron campanulatum
- Rhododendron campanulatum 'Susan'
- Rhododendron camtschaticum
- Rhododendron carolinianum 'P.J. Mezitt'
- Rhododendron carolinianum 'P.J.M. Regal'
- Rhododendron catawbiense
- Rhododendron catawbiense 'Album Novum'
- Rhododendron catawbiense 'Album'
- Rhododendron catawbiense 'Germania'
- Rhododendron catawbiense 'Grandiflorum'
- Rhododendron catawbiense 'Hachmanns Feuerschein'
- Rhododendron catawbiense 'Humboldt'
- Rhododendron catawbiense 'Nova Zembla'
- Rhododendron catawbiense 'Roseum Elegans'
- Rhododendron catawbiense 'Sammetglut'
- Rhododendron caucasicum 'Cosmopolitan'
- Rhododendron caucasicum 'Progrès'
- Rhododendron dauricum
- Rhododendron degronianum
- Rhododendron degronianum subsp. yakushimanum
- Rhododendron degronianum subsp. yakushimanum 'Annika'
- Rhododendron degronianum subsp. yakushimanum 'Anuschka'
- Rhododendron degronianum subsp. yakushimanum 'Arabella'
- Rhododendron degronianum subsp. yakushimanum 'Bad Zwischenahn'
- Rhododendron degronianum subsp. yakushimanum 'Blauschimmer'
- Rhododendron degronianum subsp. yakushimanum 'Blurettia'
- Rhododendron degronianum subsp. yakushimanum 'Bohlken's Lupinenberg'
- Rhododendron degronianum subsp. yakushimanum 'Brasilia'
- Rhododendron degronianum subsp. yakushimanum 'Emanuela'
- Rhododendron degronianum subsp. yakushimanum 'Fantastica'
- Rhododendron degronianum subsp. yakushimanum 'Florkissen'
- Rhododendron degronianum subsp. yakushimanum 'Goldprinz'
- Rhododendron degronianum subsp. yakushimanum 'Hachmann's Polaris'
- Rhododendron degronianum subsp. yakushimanum 'Kalinka'
- Rhododendron degronianum subsp. yakushimanum 'Kerstine'
- Rhododendron degronianum subsp. yakushimanum 'Koichiro Wada'
- Rhododendron degronianum subsp. yakushimanum 'Koichiro Wada''
- Rhododendron degronianum subsp. yakushimanum 'Kokette'
- Rhododendron degronianum subsp. yakushimanum 'Lullaby'
- Rhododendron degronianum subsp. yakushimanum 'Marlis'
- Rhododendron degronianum subsp. yakushimanum 'Nicoletta'
- Rhododendron degronianum subsp. yakushimanum 'Ninotschka'
- Rhododendron degronianum subsp. yakushimanum 'Percy Wiseman'
- Rhododendron degronianum subsp. yakushimanum 'Pink Cherub'
- Rhododendron degronianum subsp. yakushimanum 'Polaris'
- Rhododendron degronianum subsp. yakushimanum 'Rumpelstielzchen'
- Rhododendron degronianum subsp. yakushimanum 'Silbervelours'
- Rhododendron degronianum subsp. yakushimanum 'Tiana'
- Rhododendron degronianum subsp. yakushimanum 'Valencia'
- Rhododendron fauriei
- Rhododendron ferrugineum
- Rhododendron groenlandicum
- Rhododendron hirsutum
- Rhododendron impeditum
- Rhododendron impeditum 'Azurika'
- Rhododendron impeditum 'Blue 'Tit Magor'
- Rhododendron impeditum 'Blue Tit Magor'
- Rhododendron impeditum 'Moorheim'
- Rhododendron japonicum
- Rhododendron kaempferi 'Lachsrosa'
- Rhododendron kaempferi 'Orange Beauty'
- Rhododendron keiskei 'Patty Bee'
- Rhododendron keiskei Princess Anne'
- Rhododendron lanatum
- Rhododendron luteum
- Rhododendron luteum 'Berryrose'
- Rhododendron luteum 'Coccinea Speciosa'
- Rhododendron luteum 'Dante Gabriel Rosetti'
- Rhododendron luteum 'Daviesii'
- Rhododendron luteum 'Golden Eagle'
- Rhododendron luteum 'Homebush'
- Rhododendron luteum 'Möwe'
- Rhododendron luteum 'Narcissiflora'
- Rhododendron luteum 'Parkfeuer'
- Rhododendron luteum 'Persil'
- Rhododendron luteum 'Royal Command'
- Rhododendron luteum 'Wedding Bouquet'
- Rhododendron makinoi
- Rhododendron makinoi 'Rosa Perle'
- Rhododendron micranthum 'Bloombux'
- Rhododendron minus
- Rhododendron mixtum 'Sonnenköpfchen'
- Rhododendron mollis
- Rhododendron mollis 'Koster's Brilliant Red'
- Rhododendron mollis 'Polly Claessens'
- Rhododendron mollis 'Pompadour'
- Rhododendron mollis 'Prinses Juliana'
- Rhododendron mollis 'Professor Amundsen'
- Rhododendron mollis 'Prominent'
- Rhododendron mollis 'Robert Koch'
- Rhododendron mollis 'Snowdrift'
- Rhododendron mollis 'T. J. Seidel'
- Rhododendron mollis x sinensis
- Rhododendron mucronatum
- Rhododendron mucronulatum
- Rhododendron occidentale
- Rhododendron occidentale 'Irene Koster'
- Rhododendron orbiculare
- Rhododendron oreodoxa
- Rhododendron oreodoxa var. fargesii
- Rhododendron polycladum
- Rhododendron ponticum
- Rhododendron ponticum 'Picotee'
- Rhododendron racemosum
- Rhododendron repens 'Baden Baden'
- Rhododendron repens 'Carmen'
- Rhododendron repens 'Elisabeth Hobbie'
- Rhododendron repens 'Scarlet Wonder'
- Rhododendron rex 'Grünspan'
- Rhododendron rubiginosum
- Rhododendron russatum 'Gletschernacht'
- Rhododendron schlippenbachii
- Rhododendron sect. Vireya
- Rhododendron sichotense
- Rhododendron simsii
- Rhododendron simsii 'Ambrosianum'
- Rhododendron simsii 'Bunte Scherrer'
- Rhododendron simsii 'Concinna'
- Rhododendron simsii 'Doberlug'
- Rhododendron simsii 'Feuerzauber'
- Rhododendron simsii 'Georg Struppek'
- Rhododendron simsii 'Gerhard Nicolai'
- Rhododendron simsii 'Gloria'
- Rhododendron simsii 'Janique'
- Rhododendron simsii 'Leopold Astrid'
- Rhododendron simsii 'Mevrouw Gerard Kint'
- Rhododendron simsii 'Nancy Mary'
- Rhododendron simsii 'Nanny'
- Rhododendron simsii 'Panfilia'
- Rhododendron simsii 'Paul Schäme'
- Rhododendron simsii 'Reinhold Ambrosius'
- Rhododendron simsii 'Rosafolia'
- Rhododendron simsii 'Sachsenstern'
- Rhododendron simsii 'Taggi'
- Rhododendron smirnowii
- Rhododendron tomentosum
- Rhododendron viscosum 'Karminduft'
- Rhododendron viscosum 'Sommerduft'
- Rhododendron wallichii
- Rhododendron wardii var. puralbum
- Rhododendron williamsianum 'Lissabon'
- Rhododendron williamsianum 'Vater Böhlje'
- Rhododendron x arendsii
- Rhododendron x obtusum
- Rhododendron x obtusum 'Amoenum'
- Rhododendron x obtusum 'Anne Frank'
- Rhododendron x obtusum 'Beethoven'
- Rhododendron x obtusum 'Canzonetta'
- Rhododendron x obtusum 'Hino-Crimson'
- Rhododendron x obtusum 'Hinomayo'
- Rhododendron x obtusum 'Kermesina Rosé'
- Rhododendron x obtusum 'Kermesina'
- Rhododendron x obtusum 'Königstein'
- Rhododendron x obtusum 'Ledikanense'
- Rhododendron x obtusum 'Mother's Day'
- Rhododendron x obtusum 'Negligé'
- Rhododendron x obtusum 'Palestrina'
- Rhododendron x obtusum 'Petticoat'
- Rhododendron x obtusum 'Pinky Jane'
- Rhododendron x obtusum 'Popzi'
- Rhododendron x obtusum 'Rotstein'
- Rhododendron x obtusum 'Sandy's Fire'
- Rhododendron x obtusum 'Schneeglanz'
- Rhododendron x praecox
- Rhododendron yunnanense
- Rhodohypoxis baurii
- Rhodophiala berteroana
- Rhodotypos scandens
- Rhus diversiloba
- Rhus glabra
- Rhus hirta
- Rhus hirta 'Dissectum'
- Rhus hirta 'Tiger Eyes'
- Rhus toxicodendron
- Rhus typhina
- Rhus typhina 'Dissectum'
- Rhus typhina 'Tiger Eyes'
- Rhynchostylis gigantea 'Spots'
- Rhynchostylis retusa
- Rhytidophyllum exsertum
- Ribes alpinum
- Ribes aureum
- Ribes cereum var. inebrians
- Ribes divaricatum
- Ribes manshuricum
- Ribes multiflorum
- Ribes nigrum
- Ribes nigrum 'Ben Finlay'
- Ribes nigrum 'Ben Tron'
- Ribes nigrum 'Intercontinental'
- Ribes nigrum 'Ojebyn'
- Ribes nigrum 'Ometa'
- Ribes nigrum 'Titania'
- Ribes nigrum 'Tsema'
- Ribes odoratum
- Ribes odoratum 'Crandall'
- Ribes rubrum
- Ribes rubrum 'Heinemanns Rote Spätlese'
- Ribes rubrum 'Herosta'
- Ribes rubrum 'Primus'
- Ribes rubrum 'Rolan'
- Ribes rubrum 'Rosa Sport'
- Ribes rubrum 'Rote Versailler'
- Ribes rubrum 'Rote Vierländer'
- Ribes rubrum 'Rotet'
- Ribes rubrum 'Utrecht'
- Ribes rubrum 'Weiße Holländische'
- Ribes rubrum 'Weiße Versailler'
- Ribes rubrum 'Weiße von Jüterbog'
- Ribes rubrum 'Werdavia'
- Ribes rubrum 'Zitavia'
- Ribes sanguineum
- Ribes sanguineum 'Atrorubens'
- Ribes sanguineum 'Brianjou'
- Ribes sanguineum 'King Edward VII'
- Ribes sanguineum 'Pulborough Scarlet'
- Ribes uva-crispa
- Ribes uva-crispa 'Gelbe Triumph'
- Ribes uva-crispa 'Gelbe Triumphbeere'
- Ribes uva-crispa 'Invicta'
- Ribes uva-crispa 'Mucurines'
- Ribes uva-crispa 'Pax'
- Ribes uva-crispa 'Redeva'
- Ribes uva-crispa 'Remarka'
- Ribes uva-crispa 'Rixanta'
- Ribes x bethmontii
- Ribes x gordonianum
- Ribes x koehneanum
- Ribes x nidigrolaria 'Josta'
- Ricinus communis
- Ricinus communis 'Carmencita'
- Robinia hispida 'Macrophylla'
- Robinia kelseyi
- Robinia pseudoacacia
- Robinia pseudoacacia 'Myrtifolia'
- Robinia pseudoacacia 'Tortuosa'
- Robinia pseudoacacia 'Twisty Baby'
- Robinia pseudoacacia 'Umbraculifera'
- Robinia pseudoacacia 'Unifoliola'
- Robinia x margaretta 'Casque Rouge'
- Robinia x slavinii 'Casque Rouge'
- Rodgersia aesculifolia
- Rodgersia pinnata
- Rodgersia pinnata 'Bloody Mary'
- Rodgersia pinnata 'Crug Cardinal'
- Rodgersia pinnata 'Die Stolze'
- Rodgersia pinnata 'Maurice Mason'
- Rodgersia pinnata 'Rotlaub'
- Rodgersia podophylla
- Rodgersia purdomii
- Romneya coulteri
- Rondeletia odorata
- Rosa Absolutely Fabulous
- Rosa Aicha
- Rosa Alchymist
- Rosa Alexandre Girault
- Rosa American Pillar
- Rosa Angela
- Rosa Apfelblüte
- Rosa Apple Blossom
- Rosa Apricot Clementine
- Rosa Aquarell
- Rosa Ascot
- Rosa Aspirin
- Rosa Astrid Lindgren
- Rosa Augusta Luise
- Rosa Baronesse
- Rosa Ben Cant
- Rosa Berkley
- Rosa Berliner Luft
- Rosa Bernadette Chirac
- Rosa Betty Bland
- Rosa Bienenweide Rot
- Rosa Blush Rambler
- Rosa Blühwunder
- Rosa Bobby James
- Rosa Bonica
- Rosa Bonica 82
- Rosa Bonita
- Rosa Bright Eyes
- Rosa Brillant Korsar
- Rosa Bukavu
- Rosa Canary Bird
- Rosa Capitaine Basroger
- Rosa Ceské Prci Cest
- Rosa Charles Austin
- Rosa Charles de Mills
- Rosa Chevy Chase
- Rosa Chianti
- Rosa Chippendale
- Rosa Clair Matin
- Rosa Claus Groth
- Rosa Climbing Mme. Caroline Testout
- Rosa Climbing Orange Triumph
- Rosa Colette
- Rosa Comte de Chambord
- Rosa Concerto
- Rosa Constance Spry
- Rosa Crown Princess Margaret
- Rosa Crown Princess Margareta
- Rosa Cuvinia
- Rosa Danse des Sylphes
- Rosa Dentelle de Bruges
- Rosa Dentelle de Bruxelles
- Rosa Dentelle de Malines
- Rosa Diane de Poitiers
- Rosa Dolomiti
- Rosa Doris Tystermann
- Rosa Dortmund
- Rosa Dr. Eckener
- Rosa Duftzauber 84
- Rosa Eden Rose
- Rosa Eisvogel
- Rosa Excelsa
- Rosa F.J. Grootendorst
- Rosa Felicite et Perpetue
- Rosa Fenja
- Rosa Ferdinand Pichard
- Rosa Flammentanz
- Rosa Fragezeichen
- Rosa France Bleu
- Rosa Frau Astrid Späth
- Rosa Fritz Nobis
- Rosa Frühlingsduft
- Rosa Frühlingsgold
- Rosa Gartenspaß
- Rosa Gertrude Jekyll
- Rosa Giardina
- Rosa Gloria Dei
- Rosa Golden Chersonese
- Rosa Goldmarie
- Rosa Grace
- Rosa Gros Choux de Hollande
- Rosa Gruß an Heidelberg
- Rosa Heavenly Pink
- Rosa Heidi Klum
- Rosa Hermann Schmidt
- Rosa Herzogin Friederike
- Rosa Highdownensis
- Rosa Horace Vernet
- Rosa Hotel Royal
- Rosa Inspiration
- Rosa Jalitah
- Rosa Jazz
- Rosa Jean Girin
- Rosa Johann Strauss
- Rosa Johanna Röpke
- Rosa Jubilé du Prince de Monaco
- Rosa Jules Margottin
- Rosa Kew Rambler
- Rosa Kimono
- Rosa Köln am Rhein
- Rosa Königin von Dänemark
- Rosa La Fraicheur
- Rosa La Sevillana
- Rosa Laguna
- Rosa Lavender Dream
- Rosa Lavender Ice
- Rosa Lenkivi
- Rosa Leonardo da Vinci
- Rosa Little Miss Sunshine
- Rosa Louise Odier
- Rosa Lykkefund
- Rosa Magna Carta
- Rosa Maigold
- Rosa Manetti
- Rosa Manita
- Rosa Maria Lisa
- Rosa Mariatheresia
- Rosa Marie Curie
- Rosa Marie Liesa
- Rosa Mary Rose
- Rosa Matilda
- Rosa Mistress F.W. Flight
- Rosa Mme Boll
- Rosa Mme Knorr
- Rosa Mme. Isaac Pereine
- Rosa Mon Jardin et Ma Maison
- Rosa Morning Jewel
- Rosa Mountain Snow
- Rosa Mozart
- Rosa Mrs. John Laing
- Rosa Music Hall
- Rosa Méli-Mélo
- Rosa Nathalie
- Rosa Nevada
- Rosa New Dawn
- Rosa Nordhausen
- Rosa Novalis
- Rosa Old Port
- Rosa Oso Happy Smoothie
- Rosa Panthère Rose
- Rosa Parade
- Rosa Parkdirektor Riggers
- Rosa Paul Ploton
- Rosa Paul's Himalayan Musk
- Rosa Paul's Scarlet Climber
- Rosa Penthouse
- Rosa Perle von Weißenstein
- Rosa Pierre de Ronsard
- Rosa Poseidon
- Rosa Postillion
- Rosa Prince Charles
- Rosa Raubritter
- Rosa Red Eden Rose
- Rosa Red Flare
- Rosa Rhapsody in Blue
- Rosa Rift
- Rosa Romanze
- Rosa Rosarium Uetersen
- Rosa Rose des Cisterciens
- Rosa Rose du Roi à Fleurs Pourpres
- Rosa Rosemarie Viaud
- Rosa Rosenfest
- Rosa Rosenprofessor Sieber
- Rosa Rugelda
- Rosa Réné Descartes
- Rosa Sahara
- Rosa Schloss Eutin
- Rosa Schneewittchen
- Rosa Schöne Koblenzerin
- Rosa Seagull
- Rosa Single Red
- Rosa Snow Ballet
- Rosa Snow Princess
- Rosa Sonia Meilove
- Rosa Sonnenuntergang
- Rosa Sorbet Fruité
- Rosa Stanwell Perpetual
- Rosa Super Dorothy
- Rosa Super Excelsa
- Rosa Suzy
- Rosa Sweet Lady
- Rosa Sweet Pretty
- Rosa Tapis Persan
- Rosa Tausendschön
- Rosa Tendence
- Rosa Tenor
- Rosa The Fairy
- Rosa The Prince's Trust
- Rosa Till Uhlenspiegel
- Rosa Tschaikowsky
- Rosa Ube Komachi
- Rosa Ulrich Brunner Fils
- Rosa Una
- Rosa Vanity
- Rosa Veilchenblau
- Rosa Venusta Pendula
- Rosa Weg der Sinne
- Rosa Winchester Cathedral
- Rosa Yellow Charles Austin
- Rosa Zephirine Drouhin
- Rosa acicularis
- Rosa agrestis
- Rosa arnoldii
- Rosa balsamica
- Rosa beggeriana
- Rosa canina
- Rosa carolina
- Rosa chinensis 'Viridiflora'
- Rosa corymbifera
- Rosa dumalis
- Rosa fargesii
- Rosa foetida
- Rosa foetida 'Muscosa'
- Rosa foetida 'Persian Yellow'
- Rosa gallica
- Rosa gallica 'Rosa Mundi'
- Rosa gallica 'Scharlachglut'
- Rosa giraldii
- Rosa glauca
- Rosa gymnocarpa
- Rosa helenae
- Rosa hemisphaerica
- Rosa henryi
- Rosa hugonis
- Rosa iberica
- Rosa kordesii
- Rosa laevigata
- Rosa maracandica
- Rosa moschata 'Ballerina'
- Rosa moschata 'Vanity'
- Rosa moschata x multiflora
- Rosa moyesii
- Rosa moyesii 'Eddie's Crimson'
- Rosa moyesii 'Geranium'
- Rosa moyesii 'Marguerite Hilling'
- Rosa multiflora
- Rosa multiflora 'Cathayensis'
- Rosa multiflora 'Plathyphylla'
- Rosa nitida
- Rosa nitidula
- Rosa nutkana
- Rosa omeiensis
- Rosa omeiensis var. pteracantha
- Rosa pendulina
- Rosa persica
- Rosa pisocarpa
- Rosa primula
- Rosa roxburghii
- Rosa rubiginosa
- Rosa rubiginosa 'Edith Bellenden'
- Rosa rugosa
- Rosa rugosa 'Angelia Eglantine'
- Rosa rugosa 'Atropurpurea'
- Rosa rugosa 'Conrad Ferdinand Meyer'
- Rosa rugosa 'F. J. Grootendorst'
- Rosa schrenkiana
- Rosa sericea 'Heather Muir'
- Rosa sertata
- Rosa setigera
- Rosa sicula
- Rosa soulieana
- Rosa spinosissima
- Rosa spinosissima 'Frühlingsduft'
- Rosa spinosissima var. altaica
- Rosa sweginzowii
- Rosa villosa
- Rosa villosa 'Duplex'
- Rosa woodsii
- Rosa x alba 'Maxima'
- Rosa x barbierana
- Rosa x centifolia
- Rosa x centifolia 'Catherine de Wurttemberg'
- Rosa x centifolia 'Centifolia Alba'
- Rosa x centifolia 'Fantin-Latour'
- Rosa x centifolia 'Mme. William Paul'
- Rosa x centifolia 'Muscosa'
- Rosa x centifolia 'Parviflora'
- Rosa x centifolia 'Reime des Amateurs'
- Rosa x centifolia 'Rose de Meaux'
- Rosa x damascena 'Gloire de Guilan'
- Rosa x damascena 'Marie Louise'
- Rosa x damascena 'Mme Hardy'
- Rosa x damascena 'Rose de Resht'
- Rosa x dupontii
- Rosa x francofurtana
- Rosa x harisonii
- Rosa x harisonii 'Vorbergii'
- Rosa x odorata 'Niszr'
- Rosa x rubrosa 'Carmenetta'
- Rosa xanthina
- Rosa xanthina 'Hugonis'
- Roscoea cautleoides
- Roscoea cautleoides 'Jeffrey Thomas'
- Roscoea purpurea
- Roscoea scillifolia
- Rosmarinus officinalis
- Rosmarinus officinalis 'Foxtail'
- Rosmarinus officinalis 'Prostratus'
- Rossioglossum grande
- Roystonea oleracea
- Roystonea regia
- Rubia tinctoria
- Rubus Tummelberry
- Rubus biflorus
- Rubus cockburnianus
- Rubus fruticosus
- Rubus fruticosus 'Arapaho'
- Rubus fruticosus 'Asterina'
- Rubus fruticosus 'Baby Cakes'
- Rubus fruticosus 'Chester Thornless'
- Rubus fruticosus 'Hull Thornless'
- Rubus fruticosus 'Loch Ness'
- Rubus fruticosus 'Loch Tay'
- Rubus fruticosus 'Ollalie'
- Rubus fruticosus 'Tayberry'
- Rubus fruticosus 'Theodor Reimers'
- Rubus fruticosus 'Thornless Evergreen'
- Rubus idaeus
- Rubus idaeus 'Annamaria'
- Rubus idaeus 'Aroma Queen'
- Rubus idaeus 'Autumn Happy'
- Rubus idaeus 'Little Sweet Sister'
- Rubus idaeus 'Maravilla'
- Rubus idaeus 'Pokusa'
- Rubus idaeus 'Polka'
- Rubus idaeus 'Poranna Rosa'
- Rubus idaeus 'Ruby Beauty'
- Rubus idaeus 'Schönemann'
- Rubus idaeus 'Tulameen'
- Rubus idaeus 'Twotimer Gelbe Sugana'
- Rubus idaeus 'Twotimer Sugana'
- Rubus niveus
- Rubus odoratus
- Rubus phoenicolasius
- Rubus thibetanus 'Silver Fern'
- Rubus tricolor
- Rudbeckia fulgida
- Rudbeckia fulgida 'Goldsturm'
- Rudbeckia fulgida var. deamii
- Rudbeckia hirta
- Rudbeckia hirta 'Autumn Colours'
- Rudbeckia hirta 'Cappuccino'
- Rudbeckia hirta 'Cherry Brandy'
- Rudbeckia hirta 'Cordoba'
- Rudbeckia hirta 'Denver Daisy'
- Rudbeckia hirta 'Herbstwald'
- Rudbeckia hirta 'Indian Summer'
- Rudbeckia hirta 'Marmelade'
- Rudbeckia hirta 'Maya'
- Rudbeckia hirta 'Prairie Sun'
- Rudbeckia hirta 'Rustic Colour'
- Rudbeckia hirta 'Sonora'
- Rudbeckia hirta 'Tiger Eye'
- Rudbeckia hirta var. pulcherrima
- Rudbeckia laciniata 'Goldquelle'
- Rudbeckia nitida
- Rudbeckia nitida 'Juligold'
- Rudbeckia subtomentosa
- Rudbeckia subtomentosa 'Henry Eilers'
- Rudbeckia triloba
- Rudbeckia triloba 'Prairie Glow'
- Ruellia makoyana
- Ruellia portellae
- Rumex acetosa
- Rumex patientia
- Rumex sanguineus
- Ruscus aculeatus
- Russelia equisetiformis
- Ruta graveolens