There are 167 trees that start with the letter R, from Radig to Rustyspine Beech. Below you will find them listed alphabetically along with some general information about each. Click the toggle view buttons in the top right corner to switch between the card and the table view.
For each item you will find the following information
Order: The subclass the trees belongs to
Habitat: The places or type of weather the trees lives in
Scientific name: The designation that scientists use to catalog the species
Name: Radig
Order: Fagales
Habitat: Temperate forests in Europe
Scientific name: Fagus radigii
Name: Radius
Order: Rosales
Habitat: Tropical and subtropical forests in Central and South America
Scientific name: Ampelocera hottlei
Name: Raetia
Order: Fagales
Habitat: Mountainous regions of Europe
Scientific name: Fagus raetia
Name: Raiatea
Order: Myrtales
Habitat: Tropical forests in the Pacific
Scientific name: Metrosideros raiateensis
Name: Rainea
Order: Pinales
Habitat: Mountainous regions of Mexico
Scientific name: Abies rainei
Name: Rambutan
Order: Sapindales
Habitat: Tropical rainforests in Southeast Asia
Scientific name: Nephelium lappaceum
Name: Ramie
Order: Rosales
Habitat: Subtropical and tropical regions in Asia
Scientific name: Boehmeria nivea
Name: Ramshorn
Order: Fagales
Habitat: Temperate forests in Europe
Scientific name: Fagus ramshorni
Name: Ramtil
Order: Sapindales
Habitat: Tropical and subtropical regions worldwide
Scientific name: Dodonaea viscosa
Name: Ranai
Order: Rosales
Habitat: Tropical forests in the Pacific
Scientific name: Ficus ranai
Name: Rangoon
Order: Sapindales
Habitat: Tropical forests in Southeast Asia
Scientific name: Gluta usitata
Name: Ransaga
Order: Fagales
Habitat: Temperate forests in Europe
Scientific name: Fagus ransaga
Name: Rasberry
Order: Rosales
Habitat: Temperate regions in the Northern Hemisphere
Scientific name: Rubus idaeus
Name: Ratamba
Order: Rosales
Habitat: Tropical forests in Asia
Scientific name: Glochidion ratamba
Name: Ratan
Order: Arecales
Habitat: Tropical and subtropical forests in Asia
Scientific name: Calamus rotang
Name: Rattan
Order: Arecales
Habitat: Tropical and subtropical forests in Asia
Scientific name: Calamus spp.
Name: Red Alder
Order: Fagales
Habitat: Temperate rainforests in western North America
Scientific name: Alnus rubra
Name: Red Ash
Order: Lamiales
Habitat: Eastern and central North America
Scientific name: Fraxinus pennsylvanica
Name: Red Bay
Order: Laurales
Habitat: Coastal regions of eastern North America
Scientific name: Persea borbonia
Name: Red Beech
Order: Fagales
Habitat: Temperate forests in New Zealand
Scientific name: Nothofagus fusca
Name: Red Birch
Order: Betulales
Habitat: Eastern North America
Scientific name: Betula lenta
Name: Red Box
Order: Myrtales
Habitat: Southeastern Australia
Scientific name: Eucalyptus polyanthemos
Name: Red Buckeye
Order: Sapindales
Habitat: Southeastern United States
Scientific name: Aesculus pavia
Name: Red Cedar
Order: Pinales
Habitat: Eastern and central North America
Scientific name: Juniperus virginiana
Name: Red Cherry
Order: Rosales
Habitat: Eastern North America
Scientific name: Prunus serotina
Name: Red Copalillo
Order: Sapindales
Habitat: Central America and the Caribbean
Scientific name: Bursera simaruba
Name: Red Cumaru
Order: Fabales
Habitat: Amazon rainforest in South America
Scientific name: Dipteryx odorata
Name: Red Elder
Order: Dipsacales
Habitat: Temperate regions of the Northern Hemisphere
Scientific name: Sambucus racemosa
Name: Red Elm
Order: Urticales
Habitat: Eastern and central North America
Scientific name: Ulmus rubra
Name: Red Fir
Order: Pinales
Habitat: Western North America
Scientific name: Abies magnifica
Name: Red Flame Tree
Order: Fabales
Habitat: Native to Madagascar, naturalized in tropical regions
Scientific name: Delonix regia
Name: Red Gum
Order: Myrtales
Habitat: Southeastern Australia
Scientific name: Eucalyptus camaldulensis
Name: Red Ironbark
Order: Myrtales
Habitat: Southeastern Australia
Scientific name: Eucalyptus sideroxylon
Name: Red Jacaranda
Order: Lamiales
Habitat: Tropical regions of South America
Scientific name: Jacaranda cuspidifolia
Name: Red Julibrissin
Order: Fabales
Habitat: Native to East Asia, naturalized in North America
Scientific name: Albizia julibrissin
Name: Red Kidney Bean
Order: Fabales
Habitat: Native to the Americas, widely cultivated
Scientific name: Phaseolus vulgaris
Name: Red Lacquer Tree
Order: Sapindales
Habitat: East Asia
Scientific name: Toxicodendron vernicifluum
Name: Red Lapacho
Order: Bignoniaceae
Habitat: Tropical regions of South America
Scientific name: Handroanthus impetiginosus
Name: Red Limba
Order: Malvales
Habitat: West and Central Africa
Scientific name: Terminalia superba
Name: Red Maple
Order: Sapindales
Habitat: Eastern North America
Scientific name: Acer rubrum
Name: Red Oak
Order: Fagales
Habitat: Eastern North America
Scientific name: Quercus rubra
Name: Red Pine
Order: Pinales
Habitat: Northeastern North America
Scientific name: Pinus resinosa
Name: Red Safflower
Order: Asterales
Habitat: Native to the Mediterranean region, cultivated worldwide
Scientific name: Carthamus tinctorius
Name: Red Sandalwood
Order: Fabales
Habitat: South India
Scientific name: Pterocarpus santalinus
Name: Red Sarcocephalus
Order: Gentianales
Habitat: Tropical Africa
Scientific name: Sarcocephalus latifolius
Name: Red Spruce
Order: Pinales
Habitat: Northeastern North America
Scientific name: Picea rubens
Name: Red Stopper
Order: Myrtales
Habitat: Southeastern United States and the Caribbean
Scientific name: Eugenia foetida
Name: Red Stringy Bark
Order: Myrtales
Habitat: Southeastern Australia
Scientific name: Eucalyptus macrorhyncha
Name: Red Sundari
Order: Myrtales
Habitat: Mangrove forests of Asia
Scientific name: Heritiera fomes
Name: Red Tamarind
Order: Fabales
Habitat: Tropical regions of South America
Scientific name: Dialium guianense
Name: Red Tide Tree
Order: Sapindales
Habitat: Native to Peru, naturalized in many regions
Scientific name: Schinus molle
Name: Red Tulip Tree
Order: Magnoliaceae
Habitat: Eastern North America
Scientific name: Liriodendron tulipifera
Name: Red Wax Myrtle
Order: Myricales
Habitat: Southeastern United States
Scientific name: Morella cerifera
Name: Red Wilson
Order: Rhamnales
Habitat: Caribbean region
Scientific name: Colubrina rubra
Name: Redberry
Order: Rosales
Habitat: Western North America
Scientific name: Rhamnus crocea
Name: Redberry Juniper
Order: Pinales
Habitat: Southwestern United States and northern Mexico
Scientific name: Juniperus coahuilensis
Name: Redcedar
Order: Pinales
Habitat: Eastern and central North America
Scientific name: Juniperus virginiana
Name: Redcurrent
Order: Saxifragales
Habitat: Northern Europe and Siberia
Scientific name: Ribes rubrum
Name: Redfruit Fig
Order: Rosales
Habitat: Southeast Asia
Scientific name: Ficus drupacea
Name: Redneck Hickory
Order: Juglandales
Habitat: Southeastern United States
Scientific name: Carya carolinae-septentrionalis
Name: Redragon Bererry
Order: Cornales
Habitat: East Asia
Scientific name: Cornus kousa
Name: Redshank
Order: Polygonales
Habitat: Widespread throughout the Northern Hemisphere
Scientific name: Polygonum persicaria
Name: Redthroat Croton
Order: Malpighiales
Habitat: Central America
Scientific name: Croton sanguifluus
Name: Redwood
Order: Pinales
Habitat: Coastal regions of western North America
Scientific name: Sequoia sempervirens
Name: Reeve's Bamboo
Order: Poales
Habitat: East Asia
Scientific name: Pleioblastus pygmaeus
Name: Regelia
Order: Myrtales
Habitat: Southwestern Australia
Scientific name: Regelia ciliata
Name: Rehder's Beech
Order: Fagales
Habitat: Central China
Scientific name: Fagus rehderiana
Name: Rehderodendron
Order: Ericales
Habitat: Southeast Asia
Scientific name: Rehderodendron macrocarpum
Name: Reina Mora
Order: Sapindales
Habitat: Central America and Mexico
Scientific name: Persea americana
Name: Relic Beech
Order: Fagales
Habitat: Tasmania
Scientific name: Nothofagus gunnii
Name: Rembang
Order: Malpighiales
Habitat: Southeast Asia
Scientific name: Baccaurea racemosa
Name: Renealmia
Order: Zingiberales
Habitat: Amazon basin
Scientific name: Renealmia amazonensis
Name: Resin Birch
Order: Betulales
Habitat: Eastern North America
Scientific name: Betula lenta
Name: Resin Tree
Order: Sapindales
Habitat: East Asia
Scientific name: Toxicodendron vernicifluum
Name: Retama
Order: Fabales
Habitat: Mediterranean region
Scientific name: Retama sphaerocarpa
Name: Retusa
Order: Brassicales
Habitat: Mediterranean region
Scientific name: Sinapis retusa
Name: Rhabanus
Order: Laurales
Habitat: Southeast Asia
Scientific name: Litsea rhabanus
Name: Rhatany
Order: Polygalales
Habitat: Tropical America
Scientific name: Krameria triandra
Name: Rhopalocarpus
Order: Malvales
Habitat: Madagascar
Scientific name: Rhopalocarpus lucidum
Name: Rhotia
Order: Sapindales
Habitat: Southeast Asia
Scientific name: Nephelium rhoitanum
Name: Ribbon Gum
Order: Myrtales
Habitat: Southeastern Australia
Scientific name: Eucalyptus viminalis
Name: Ribbon Tree
Order: Sapindales
Habitat: New Zealand
Scientific name: Plagianthus regius
Name: Rice Bean
Order: Fabales
Habitat: Asia
Scientific name: Vigna umbellata
Name: Rice Paper Plant
Order: Araliaceae
Habitat: East Asia
Scientific name: Tetrapanax papyrifer
Name: Riceflower Tree
Order: Myristioaceae
Habitat: Southeast Asia
Scientific name: Horsfieldia iryaghedhi
Name: Ricinus
Order: Malpighiales
Habitat: Native to Africa, widely cultivated
Scientific name: Ricinus communis
Name: Ridgetop Pine
Order: Pinales
Habitat: Appalachian Mountains of eastern North America
Scientific name: Pinus pungens
Name: Rimu
Order: Podocarpales
Habitat: New Zealand
Scientific name: Dacrydium cupressinum
Name: Rinchocarpon
Order: Fagales
Habitat: Southeast Asia
Scientific name: Lithocarpus rinchocarpon
Name: Ring Acacia
Order: Fabales
Habitat: Australia
Scientific name: Acacia aulacocarpa
Name: Ring-Fruited Elm
Order: Urticales
Habitat: Southeastern United States
Scientific name: Ulmus crassifolia
Name: Ringwood
Order: Fagales
Habitat: Himalayas
Scientific name: Quercus semecarpifolia
Name: Rio Madre de Dios
Order: Laurales
Habitat: Amazon Basin in South America
Scientific name: Ocotea floribunda
Name: Riodaphne
Order: Laurales
Habitat: Mexico
Scientific name: Riodaphne mexicana
Name: Rirukwa
Order: Brassicales
Habitat: Tanzania
Scientific name: Thladiantha rirukowaensis
Name: Riry
Order: Laurales
Habitat: Madagascar
Scientific name: Ocotea riryensis
Name: River Birch
Order: Betulales
Habitat: Eastern North America
Scientific name: Betula nigra
Name: River Gum
Order: Myrtales
Habitat: Southeastern Australia
Scientific name: Eucalyptus camaldulensis
Name: River Heath
Order: Ericales
Habitat: Australia
Scientific name: Epacris riparia
Name: River She-Oak
Order: Casuarinales
Habitat: Eastern Australia
Scientific name: Casuarina cunninghamiana
Name: Riverclub Palm
Order: Arecales
Habitat: New Guinea
Scientific name: Hydriastele microcarpa
Name: Riverflat Hickory
Order: Juglandales
Habitat: Eastern North America
Scientific name: Carya cordiformis
Name: Robinia
Order: Fabales
Habitat: Eastern North America
Scientific name: Robinia pseudoacacia
Name: Rock Elm
Order: Urticales
Habitat: Northeastern North America
Scientific name: Ulmus thomasii
Name: Rock Fig
Order: Rosales
Habitat: Southeast Asia
Scientific name: Ficus petrophila
Name: Rock Maple
Order: Sapindales
Habitat: Eastern North America
Scientific name: Acer saccharum
Name: Rock Rose
Order: Malvales
Habitat: Mediterranean region
Scientific name: Cistus spp.
Name: Rodelar
Order: Malvales
Habitat: Southeast Asia
Scientific name: Pterospermum rodgelianum
Name: Rodgera
Order: Saxifragales
Habitat: East Asia
Scientific name: Rodgersia aesculifolia
Name: Rodrigane
Order: Laurales
Habitat: Brazil
Scientific name: Cryptocarya rodriganei
Name: Rohira
Order: Celastrales
Habitat: Southwestern North America
Scientific name: Simmondsia chinensis
Name: Rokumbo
Order: Laurales
Habitat: Japan
Scientific name: Machilus rokumbo
Name: Rolli
Order: Laurales
Habitat: Colombia
Scientific name: Ocotea rollii
Name: Romanoff
Order: Fabales
Habitat: Southeast Asia
Scientific name: Millettia sericea
Name: Romelea
Order: Rosales
Habitat: New Caledonia
Scientific name: Ficus romelea
Name: Romickja
Order: Laurales
Habitat: Central America and Mexico
Scientific name: Persea americana
Name: Rondonia
Order: Rosales
Habitat: Brazil
Scientific name: Ficus rondoniensis
Name: Rong Pine
Order: Pinales
Habitat: China
Scientific name: Pinus armandii
Name: Rosa
Order: Rosales
Habitat: Widespread in temperate regions of the Northern Hemisphere
Scientific name: Rosa spp.
Name: Rosado
Order: Malvales
Habitat: South America
Scientific name: Ceiba speciosa
Name: Rosario
Order: Rosales
Habitat: Philippines
Scientific name: Ficus rosario
Name: Rose Apple
Order: Myrtales
Habitat: Native to Southeast Asia, widely cultivated
Scientific name: Syzygium jambos
Name: Rose Gum
Order: Myrtales
Habitat: Coastal eastern Australia
Scientific name: Eucalyptus grandis
Name: Rose Tree
Order: Rosales
Habitat: Asia
Scientific name: Helicteres isora
Name: Rose of Sharon
Order: Malvales
Habitat: Native to Asia, widely cultivated
Scientific name: Hibiscus syriacus
Name: Rosea
Order: Celastrales
Habitat: Asia
Scientific name: Celastrus roseus
Name: Roseapple
Order: Myrtales
Habitat: Southeast Asia
Scientific name: Syzygium jambos
Name: Rosemary
Order: Lamiales
Habitat: Mediterranean region
Scientific name: Rosmarinus officinalis
Name: Rosewood
Order: Fabales
Habitat: Tropical regions worldwide
Scientific name: Dalbergia spp.
Name: Rosmarinifolia
Order: Oleales
Habitat: Mediterranean region
Scientific name: Phillyrea rosmarinifolia
Name: Rostreghera
Order: Laurales
Habitat: Southeast Asia
Scientific name: Litsea rostrata
Name: Rotable Mahogany
Order: Sapindales
Habitat: Central and South America
Scientific name: Swietenia macrophylla
Name: Rotengle
Order: Sapindales
Habitat: Europe
Scientific name: Acer pseudoplatanus
Name: Rouloniah
Order: Laurales
Habitat: Southeast Asia
Scientific name: Litsea roulonii
Name: Round Leaf Barberry
Order: Berberidales
Habitat: South America
Scientific name: Berberis rotundifolia
Name: Round Leaf Caper
Order: Capparales
Habitat: Africa
Scientific name: Capparis rotundifolia
Name: Round Leaf Fig
Order: Rosales
Habitat: Southeast Asia
Scientific name: Ficus drupacea
Name: Round Leaf Mulberry
Order: Urticales
Habitat: Asia
Scientific name: Morus rotundiloba
Name: Round Leaf Oak
Order: Fagales
Habitat: Eastern North America
Scientific name: Quercus imbricaria
Name: Round Leaf Petrea
Order: Verbenales
Habitat: Tropical America
Scientific name: Petrea volubilis
Name: Round Leaf Rhamnus
Order: Rhamnales
Habitat: Asia
Scientific name: Rhamnus rotundifolia
Name: Roundberry
Order: Cornales
Habitat: Eastern North America
Scientific name: Cornus amomum
Name: Roundleaf Serviceberry
Order: Rosales
Habitat: Eastern North America
Scientific name: Amelanchier sanguinea
Name: Roundwood
Order: Proteales
Habitat: Eastern Australia
Scientific name: Macadamia tetraphylla
Name: Roxburgh Rubber
Order: Sapindales
Habitat: Amazon basin of South America
Scientific name: Hevea brasiliensis
Name: Royal Flowering Dahoon
Order: Aquifoliales
Habitat: Southeastern United States
Scientific name: Ilex opaca
Name: Royal Palm
Order: Arecales
Habitat: Caribbean
Scientific name: Roystonea regia
Name: Royerella
Order: Rosales
Habitat: Brazil
Scientific name: Ficus royerellae
Name: Rubber Tree
Order: Euphorbiaceae
Habitat: Amazon basin of South America
Scientific name: Hevea brasiliensis
Name: Ruber
Order: Fabales
Habitat: Native to Asia, widely cultivated
Scientific name: Pongamia pinnata
Name: Rubineae
Order: Laurales
Habitat: Brazil
Scientific name: Cryptocarya rubinea
Name: Rubra
Order: Rosales
Habitat: Asia
Scientific name: Prunus rubra
Name: Rubus
Order: Rosales
Habitat: Widespread in temperate regions of the Northern Hemisphere
Scientific name: Rubus spp.
Name: Ruepelia
Order: Rosales
Habitat: Africa
Scientific name: Ficus ruepellianum
Name: Ruka
Order: Laurales
Habitat: Brazil
Scientific name: Ocotea rukae
Name: Rum Cherry
Order: Rosales
Habitat: Eastern North America
Scientific name: Prunus serotina
Name: Rumphella
Order: Rosales
Habitat: Southeast Asia
Scientific name: Ficus ribes
Name: Rungsi
Order: Laurales
Habitat: Thailand
Scientific name: Cinnamomum rungreuangii
Name: Ruprechtia
Order: Polygonales
Habitat: South America
Scientific name: Ruprechtia spp.
Name: Ruscus
Order: Asparagales
Habitat: Europe
Scientific name: Ruscus aculeatus
Name: Rush Bamboo
Order: Poales
Habitat: China
Scientific name: Borinda pauciflora
Name: Russet Buffaloberry
Order: Eleagnales
Habitat: Northern North America
Scientific name: Shepherdia canadensis
Name: Rust Elm
Order: Urticales
Habitat: Eastern North America
Scientific name: Ulmus rubra
Name: Rusty Beech
Order: Fagales
Habitat: Chile
Scientific name: Nothofagus alessandrii
Name: Rusty Blackhaw
Order: Dipsacales
Habitat: Southeastern United States
Scientific name: Viburnum rufidulum
Name: Rustyleaf Fig
Order: Rosales
Habitat: Southeast Asia
Scientific name: Ficus ferruginea
Name: Rustyspine Beech
Order: Fagales
Habitat: Eastern Australia
Scientific name: Nothofagus moorei
| Name | Order | Habitat | Scientific name |
|---|---|---|---|
| Radig | Fagales | Temperate forests in Europe | Fagus radigii |
| Radius | Rosales | Tropical and subtropical forests in Central and South America | Ampelocera hottlei |
| Raetia | Fagales | Mountainous regions of Europe | Fagus raetia |
| Raiatea | Myrtales | Tropical forests in the Pacific | Metrosideros raiateensis |
| Rainea | Pinales | Mountainous regions of Mexico | Abies rainei |
| Rambutan | Sapindales | Tropical rainforests in Southeast Asia | Nephelium lappaceum |
| Ramie | Rosales | Subtropical and tropical regions in Asia | Boehmeria nivea |
| Ramshorn | Fagales | Temperate forests in Europe | Fagus ramshorni |
| Ramtil | Sapindales | Tropical and subtropical regions worldwide | Dodonaea viscosa |
| Ranai | Rosales | Tropical forests in the Pacific | Ficus ranai |
| Rangoon | Sapindales | Tropical forests in Southeast Asia | Gluta usitata |
| Ransaga | Fagales | Temperate forests in Europe | Fagus ransaga |
| Rasberry | Rosales | Temperate regions in the Northern Hemisphere | Rubus idaeus |
| Ratamba | Rosales | Tropical forests in Asia | Glochidion ratamba |
| Ratan | Arecales | Tropical and subtropical forests in Asia | Calamus rotang |
| Rattan | Arecales | Tropical and subtropical forests in Asia | Calamus spp. |
| Red Alder | Fagales | Temperate rainforests in western North America | Alnus rubra |
| Red Ash | Lamiales | Eastern and central North America | Fraxinus pennsylvanica |
| Red Bay | Laurales | Coastal regions of eastern North America | Persea borbonia |
| Red Beech | Fagales | Temperate forests in New Zealand | Nothofagus fusca |
| Red Birch | Betulales | Eastern North America | Betula lenta |
| Red Box | Myrtales | Southeastern Australia | Eucalyptus polyanthemos |
| Red Buckeye | Sapindales | Southeastern United States | Aesculus pavia |
| Red Cedar | Pinales | Eastern and central North America | Juniperus virginiana |
| Red Cherry | Rosales | Eastern North America | Prunus serotina |
| Red Copalillo | Sapindales | Central America and the Caribbean | Bursera simaruba |
| Red Cumaru | Fabales | Amazon rainforest in South America | Dipteryx odorata |
| Red Elder | Dipsacales | Temperate regions of the Northern Hemisphere | Sambucus racemosa |
| Red Elm | Urticales | Eastern and central North America | Ulmus rubra |
| Red Fir | Pinales | Western North America | Abies magnifica |
| Red Flame Tree | Fabales | Native to Madagascar, naturalized in tropical regions | Delonix regia |
| Red Gum | Myrtales | Southeastern Australia | Eucalyptus camaldulensis |
| Red Ironbark | Myrtales | Southeastern Australia | Eucalyptus sideroxylon |
| Red Jacaranda | Lamiales | Tropical regions of South America | Jacaranda cuspidifolia |
| Red Julibrissin | Fabales | Native to East Asia, naturalized in North America | Albizia julibrissin |
| Red Kidney Bean | Fabales | Native to the Americas, widely cultivated | Phaseolus vulgaris |
| Red Lacquer Tree | Sapindales | East Asia | Toxicodendron vernicifluum |
| Red Lapacho | Bignoniaceae | Tropical regions of South America | Handroanthus impetiginosus |
| Red Limba | Malvales | West and Central Africa | Terminalia superba |
| Red Maple | Sapindales | Eastern North America | Acer rubrum |
| Red Oak | Fagales | Eastern North America | Quercus rubra |
| Red Pine | Pinales | Northeastern North America | Pinus resinosa |
| Red Safflower | Asterales | Native to the Mediterranean region, cultivated worldwide | Carthamus tinctorius |
| Red Sandalwood | Fabales | South India | Pterocarpus santalinus |
| Red Sarcocephalus | Gentianales | Tropical Africa | Sarcocephalus latifolius |
| Red Spruce | Pinales | Northeastern North America | Picea rubens |
| Red Stopper | Myrtales | Southeastern United States and the Caribbean | Eugenia foetida |
| Red Stringy Bark | Myrtales | Southeastern Australia | Eucalyptus macrorhyncha |
| Red Sundari | Myrtales | Mangrove forests of Asia | Heritiera fomes |
| Red Tamarind | Fabales | Tropical regions of South America | Dialium guianense |
| Red Tide Tree | Sapindales | Native to Peru, naturalized in many regions | Schinus molle |
| Red Tulip Tree | Magnoliaceae | Eastern North America | Liriodendron tulipifera |
| Red Wax Myrtle | Myricales | Southeastern United States | Morella cerifera |
| Red Wilson | Rhamnales | Caribbean region | Colubrina rubra |
| Redberry | Rosales | Western North America | Rhamnus crocea |
| Redberry Juniper | Pinales | Southwestern United States and northern Mexico | Juniperus coahuilensis |
| Redcedar | Pinales | Eastern and central North America | Juniperus virginiana |
| Redcurrent | Saxifragales | Northern Europe and Siberia | Ribes rubrum |
| Redfruit Fig | Rosales | Southeast Asia | Ficus drupacea |
| Redneck Hickory | Juglandales | Southeastern United States | Carya carolinae-septentrionalis |
| Redragon Bererry | Cornales | East Asia | Cornus kousa |
| Redshank | Polygonales | Widespread throughout the Northern Hemisphere | Polygonum persicaria |
| Redthroat Croton | Malpighiales | Central America | Croton sanguifluus |
| Redwood | Pinales | Coastal regions of western North America | Sequoia sempervirens |
| Reeve's Bamboo | Poales | East Asia | Pleioblastus pygmaeus |
| Regelia | Myrtales | Southwestern Australia | Regelia ciliata |
| Rehder's Beech | Fagales | Central China | Fagus rehderiana |
| Rehderodendron | Ericales | Southeast Asia | Rehderodendron macrocarpum |
| Reina Mora | Sapindales | Central America and Mexico | Persea americana |
| Relic Beech | Fagales | Tasmania | Nothofagus gunnii |
| Rembang | Malpighiales | Southeast Asia | Baccaurea racemosa |
| Renealmia | Zingiberales | Amazon basin | Renealmia amazonensis |
| Resin Birch | Betulales | Eastern North America | Betula lenta |
| Resin Tree | Sapindales | East Asia | Toxicodendron vernicifluum |
| Retama | Fabales | Mediterranean region | Retama sphaerocarpa |
| Retusa | Brassicales | Mediterranean region | Sinapis retusa |
| Rhabanus | Laurales | Southeast Asia | Litsea rhabanus |
| Rhatany | Polygalales | Tropical America | Krameria triandra |
| Rhopalocarpus | Malvales | Madagascar | Rhopalocarpus lucidum |
| Rhotia | Sapindales | Southeast Asia | Nephelium rhoitanum |
| Ribbon Gum | Myrtales | Southeastern Australia | Eucalyptus viminalis |
| Ribbon Tree | Sapindales | New Zealand | Plagianthus regius |
| Rice Bean | Fabales | Asia | Vigna umbellata |
| Rice Paper Plant | Araliaceae | East Asia | Tetrapanax papyrifer |
| Riceflower Tree | Myristioaceae | Southeast Asia | Horsfieldia iryaghedhi |
| Ricinus | Malpighiales | Native to Africa, widely cultivated | Ricinus communis |
| Ridgetop Pine | Pinales | Appalachian Mountains of eastern North America | Pinus pungens |
| Rimu | Podocarpales | New Zealand | Dacrydium cupressinum |
| Rinchocarpon | Fagales | Southeast Asia | Lithocarpus rinchocarpon |
| Ring Acacia | Fabales | Australia | Acacia aulacocarpa |
| Ring-Fruited Elm | Urticales | Southeastern United States | Ulmus crassifolia |
| Ringwood | Fagales | Himalayas | Quercus semecarpifolia |
| Rio Madre de Dios | Laurales | Amazon Basin in South America | Ocotea floribunda |
| Riodaphne | Laurales | Mexico | Riodaphne mexicana |
| Rirukwa | Brassicales | Tanzania | Thladiantha rirukowaensis |
| Riry | Laurales | Madagascar | Ocotea riryensis |
| River Birch | Betulales | Eastern North America | Betula nigra |
| River Gum | Myrtales | Southeastern Australia | Eucalyptus camaldulensis |
| River Heath | Ericales | Australia | Epacris riparia |
| River She-Oak | Casuarinales | Eastern Australia | Casuarina cunninghamiana |
| Riverclub Palm | Arecales | New Guinea | Hydriastele microcarpa |
| Riverflat Hickory | Juglandales | Eastern North America | Carya cordiformis |
| Robinia | Fabales | Eastern North America | Robinia pseudoacacia |
| Rock Elm | Urticales | Northeastern North America | Ulmus thomasii |
| Rock Fig | Rosales | Southeast Asia | Ficus petrophila |
| Rock Maple | Sapindales | Eastern North America | Acer saccharum |
| Rock Rose | Malvales | Mediterranean region | Cistus spp. |
| Rodelar | Malvales | Southeast Asia | Pterospermum rodgelianum |
| Rodgera | Saxifragales | East Asia | Rodgersia aesculifolia |
| Rodrigane | Laurales | Brazil | Cryptocarya rodriganei |
| Rohira | Celastrales | Southwestern North America | Simmondsia chinensis |
| Rokumbo | Laurales | Japan | Machilus rokumbo |
| Rolli | Laurales | Colombia | Ocotea rollii |
| Romanoff | Fabales | Southeast Asia | Millettia sericea |
| Romelea | Rosales | New Caledonia | Ficus romelea |
| Romickja | Laurales | Central America and Mexico | Persea americana |
| Rondonia | Rosales | Brazil | Ficus rondoniensis |
| Rong Pine | Pinales | China | Pinus armandii |
| Rosa | Rosales | Widespread in temperate regions of the Northern Hemisphere | Rosa spp. |
| Rosado | Malvales | South America | Ceiba speciosa |
| Rosario | Rosales | Philippines | Ficus rosario |
| Rose Apple | Myrtales | Native to Southeast Asia, widely cultivated | Syzygium jambos |
| Rose Gum | Myrtales | Coastal eastern Australia | Eucalyptus grandis |
| Rose Tree | Rosales | Asia | Helicteres isora |
| Rose of Sharon | Malvales | Native to Asia, widely cultivated | Hibiscus syriacus |
| Rosea | Celastrales | Asia | Celastrus roseus |
| Roseapple | Myrtales | Southeast Asia | Syzygium jambos |
| Rosemary | Lamiales | Mediterranean region | Rosmarinus officinalis |
| Rosewood | Fabales | Tropical regions worldwide | Dalbergia spp. |
| Rosmarinifolia | Oleales | Mediterranean region | Phillyrea rosmarinifolia |
| Rostreghera | Laurales | Southeast Asia | Litsea rostrata |
| Rotable Mahogany | Sapindales | Central and South America | Swietenia macrophylla |
| Rotengle | Sapindales | Europe | Acer pseudoplatanus |
| Rouloniah | Laurales | Southeast Asia | Litsea roulonii |
| Round Leaf Barberry | Berberidales | South America | Berberis rotundifolia |
| Round Leaf Caper | Capparales | Africa | Capparis rotundifolia |
| Round Leaf Fig | Rosales | Southeast Asia | Ficus drupacea |
| Round Leaf Mulberry | Urticales | Asia | Morus rotundiloba |
| Round Leaf Oak | Fagales | Eastern North America | Quercus imbricaria |
| Round Leaf Petrea | Verbenales | Tropical America | Petrea volubilis |
| Round Leaf Rhamnus | Rhamnales | Asia | Rhamnus rotundifolia |
| Roundberry | Cornales | Eastern North America | Cornus amomum |
| Roundleaf Serviceberry | Rosales | Eastern North America | Amelanchier sanguinea |
| Roundwood | Proteales | Eastern Australia | Macadamia tetraphylla |
| Roxburgh Rubber | Sapindales | Amazon basin of South America | Hevea brasiliensis |
| Royal Flowering Dahoon | Aquifoliales | Southeastern United States | Ilex opaca |
| Royal Palm | Arecales | Caribbean | Roystonea regia |
| Royerella | Rosales | Brazil | Ficus royerellae |
| Rubber Tree | Euphorbiaceae | Amazon basin of South America | Hevea brasiliensis |
| Ruber | Fabales | Native to Asia, widely cultivated | Pongamia pinnata |
| Rubineae | Laurales | Brazil | Cryptocarya rubinea |
| Rubra | Rosales | Asia | Prunus rubra |
| Rubus | Rosales | Widespread in temperate regions of the Northern Hemisphere | Rubus spp. |
| Ruepelia | Rosales | Africa | Ficus ruepellianum |
| Ruka | Laurales | Brazil | Ocotea rukae |
| Rum Cherry | Rosales | Eastern North America | Prunus serotina |
| Rumphella | Rosales | Southeast Asia | Ficus ribes |
| Rungsi | Laurales | Thailand | Cinnamomum rungreuangii |
| Ruprechtia | Polygonales | South America | Ruprechtia spp. |
| Ruscus | Asparagales | Europe | Ruscus aculeatus |
| Rush Bamboo | Poales | China | Borinda pauciflora |
| Russet Buffaloberry | Eleagnales | Northern North America | Shepherdia canadensis |
| Rust Elm | Urticales | Eastern North America | Ulmus rubra |
| Rusty Beech | Fagales | Chile | Nothofagus alessandrii |
| Rusty Blackhaw | Dipsacales | Southeastern United States | Viburnum rufidulum |
| Rustyleaf Fig | Rosales | Southeast Asia | Ficus ferruginea |
| Rustyspine Beech | Fagales | Eastern Australia | Nothofagus moorei |