All (in this database) Plants list (Scientific names): Part R

A AN AT B BU C CH CR D E F G H I J K L LL M MN N O P PI Q R S SL T U V W X Y Z

Racemaria (Convallariaceae), see Maianthemum
racemiflora L. (Cyrilla)
racemiger Bailey (Rubus)
racemosa (L.) (Smilacina)
racemosa (Walt.) (Tofieldia)
racemosa L. (Aralia)
racemosa (Greene) ( Solidagosimplex ssp. randii)
racemosa L. (Sambucus)
racemosa (Baphia)
racemosa (Kellogg) (Phacelia)
racemosa Nutt. (Cimicifuga)
racemosa Ruiz & Pavon (Polylepis)
racemosa Dougl. ex Benth. (Pedicularis)
racemosa Roxb. (Symplocos)
racemosa Lam. (Prunus), see Prunus padus
racemosa Lam., see Prunus padus
racemosa Michx. (Symphoricarpos), see Symphoricarpos albus var. laevigatus
racemosum (L.) (Muscari)
racemosum Guill. & Perr. (Combretum)
racemosum L., see Smilacina racemosa
racemosus L. (Bromus)
racemosus Pursh (Astragalus)
racemosus (Symphoricarpos), see Symphoricarpos albus var. laevigatus
Racomitrium Brid. (Grimmiaceae)
raddiana (Acacia)
radians M. Bieb. (Bifora)
radiata (Thrinax)
radiata Dewey ( Carexrosea)
radiata DC. ( Bidenscernua)
radiata Thuill. (Bidens)
radiata DC. ( Centaureanigra)
radiata L., 1753 (Hyoseris)
radiata (L.) (Valerianella)
radiata (Pinus)
radiata × tripartita (Bidens)
radiatum Gray. (Geum peckii var. ), see Geum peckii
radiatus Loisel. (Anacyclus)
radiatus (Bidens cernuus var. ), see Bidens cernua f. radiata
radiatus (Bidens), see Bidens radiata
radiatus (Patasites), see Petasites laevigatus
radicale P. Beauv., see Amblystegium saxatile
radicans Schkuhr (Scirpus)
radicans L. (Rhus)
radicans (T. F. Forst.) ( Calthapalustris)
radicans Swartz, 1806 (Trichomanes)
radicans Swartz (Vandenboscia), see Trichomanes radicans
radicata (L.) (Hypochaeris)
radicata (Hypochoeris), see Hypochaeris radicata
radicata L. (Hypochoeris), see Hypochaeris radicata
radicosa (Mitt.) (Lescuraea)
radicosa Mitt. (Pseudoleskea), see Lescuraea radicosa
radicosus A. Nels. (Penstemon)
radiola (L.) (Millegrana)
Radiola Roth. (Linaceae), see Millegrana
radiola DC. (Raphanus sativus f. ), see Raphanus sativus var. sativus
Radula Dum. (Radulaceae)
radula Ait. (Aster)
radula Nutt. (Solidago)
Radulaceae (Jungermanniales)
radulinus Gray (Aster)
raeana (Boott) ( Carexvesicaria)
Raeana (Carex vesicaria var. ), see Carex vesicaria var. raeana
raeana Britton, not. Boott (Carex), see Carex grahami
rafaelensis M.E. Jones (Astragalus)
rafaelensis Atwood (Phacelia)
Rafflesia R. Br., 1821 (Cytinaceae)
Rafflesiaceae (Magnoliopsida), see Cytinaceae
rafflesiana Jack (Nepenthes)
rafinesquei Engelm. (Opuntia), see Opuntia humifusa var. humifusa
rafinesquii Greene (Viola)
Rafinesquii (Viola), see Viola rafinesquii
?raii Bab. (Polygonum)
Raii (Polygonum), see Polygonum raii
rainierensis Pennell & Warren (Pedicularis)
rainierensis (Rosa), see Rosa nutkana var. hispida
ramalana Trimen (Spenceria)
ramannii Warnst. (Pohlia)
ramannii Warnst. (Webera), see Pohlia ramannii
Ramischia (Pyrolaceae), see Pyrola
ramosa (Boott) ( Carexdiandra)
ramosa Porter & Britton ( Solidagojuncea)
ramosa Hegetschw. (Gentiana)
ramosa L. (Orobanche)
ramosa Ell. (Polygala)
ramosa Asch. (Plantago), see Plantago arenaria
ramosa Parish (Opuntia basilaris var. ), see Opuntia basilaris var. basilaris
ramosior (L.) (Rotala)
ramosissima Rochel (Myosotis)
ramosissima Engelm. (Opuntia)
ramosissima Sm. (Campanula)
ramosissima (Pers.) ( Centauriumpulchellum)
ramosissima Dougl. ex Lehm. (Phacelia)
ramosissima Torr. (Coleogyne)
ramosissima Bentham (Celsia)
ramosissima Ledeb. (Tamarix)
ramosissima Pers. (Erythraea pulchellum f. ), see Centaurium pulchellum f. ramosissima
ramosissima Pers. (Erythraea), see Centaurium pulchellum
ramosissimum A. Nelson (Lepidium)
ramosissimum Nutt. (Peraphyllum)
ramosissimum Desf. (Equisetum)
ramosum L. (Anthericum)
ramosum (Sparganium), see Sparganium erectum
ramosum Ascherson, 1865 (Botrychium), see Botrychium matricariifolium
ramosum Huds. (Sparganium), see Sparganium erectum
ramosus Hudson (Bromus)
ramosus (Walt.) (Erigeron)
ramotissinum Michx. (Polygonum)
ramsayi (Licuala)
ramulosa (Lithophragma tenella var. ), see Lithophragma bulbifera
ramulosum Lindb. (Racomitrium), see Racomitrium microcarpon
ramulosus (Ranunculus), see Ranunculus gelidus
ranarius (Nees ex Songeon & E. P. Perrier) ( Juncusbufonius)
randii (Porter) ( Solidagosimplex)
randii Robinson (Euphrasia)
Randii (Euphrasia), see Euphrasia randii
Randii (Rubus), see Rubus canadensis
Randii (Solidago), see Solidago simplex ssp. randii var. randii
randii Bailey (Rubus argutus var. ), see Rubus canadensis
randii Bailey, see Rubus canadensis
ranunculacea (Nutt.) (Phacelia)
Ranunculaceae Juss. (Magnoliopsida)
ranunculoides L. (Hydrocotyle)
ranunculoides L. (Anemone)
ranunculoides L. (Anemonoides), see Anemone ranunculoides
Ranunculus L. (Ranunculaceae)
rapa L. (Brassica)
?rapa Dumort ( Betavulgaris)
?rapa L. (napus f. ), see Brassica napus ssp. rapifera
Rapatea (Rapateaceae)
Rapateaceae (Liliopsida)
raphanistrum L. (Raphanus)
Raphanus L. (Brassicaceae)
Raphia (Arecaceae)
Raphiolepis (Rosaceae), see Rhaphiolepis
rapifera Metzg. ( Brassicanapus)
Rapistrum Crantz (Brassicaceae)
rappii Bailey (Rubus), see Rubus allegheniensis var. allegheniensis
rapunculoides L. (Campanula)
rapunculus L. (Campanula)
rariflora (Wahlenb.) (Carex)
rariflorum Fr. (Thalictrum), see Thalictrum simplex ssp. boreale
rariflorus (Hartm.) ( Juncusalpinoarticulatus)
Raspalia (Bruniaceae)
Ratibida Rafin. (Asteraceae)
rattanii Gray (Astragalus)
rattanii Gray (Phacelia)
rattanii (Howell) ( Ranunculusoccidentalis)
rattanii Gray (Collinsia)
rattanii Gray (Mimulus)
rattanii Gray (Penstemon)
Ravenala (Strelitziaceae)
Ravenea (Arecaceae)
ravenelii Scribn. & Merr. (Panicum)
Ravenelii (Panicum), see Panicum ravenelii
ravenii Barneby (Astragalus)
ravenii R.C. Jackson (Haplopappus), see Machaeranthera gracilis
ravus (Rubus), see Rubus frondisentis
ravus Bailey (Rubus), see Rubus frondisentis
raynalii (Schuyler) ( Schoenoplectuserectus)
raynalii Schuyler (Scirpus), see Schoenoplectus erectus ssp. raynalii
Raystonea (Arecaceae)
razoumovianum Helm. & Fisch., 1825 (Hedysarum)
Reboulia Raddi (Aytoniaceae)
recedens Greene ex Rydb., see Astragalus praelongus var. praelongus
reclinata (Phoenix)
reclinatum (L.) ( Ribesuva-crispa)
reclinatus L`Hérit (Ceanothus)
reclinatus (Astragalus), see Astragalus diversifolius
recognitum (Hedw.) (Thuidium)
reconditus Nels. & Macbr. (Ranunculus)
recta L. (Clematis)
recta L. (Potentilla)
recta auct. (Carex), see Carex halophila
× rectifolius Benn. (Potamogeton)
rectrirostra Gaudin. ( Carexflava)
recurvans Blanchard (Rubus)
recurvata (Hedw.) (Seligeria)
recurvata Dudley ( Najasmarina)
recurvatum (Lindb. & H. Arn.) (Hypnum)
recurvatum Beck (Trillium)
recurvatus Poir. (Ranunculus)
recurvicaulis Blanchard (Rubus)
recurvifolia Dicks. (Ephemerella), see Ephemerum recurvifolium
recurvifolium (Dicks.) (Ephemerum)
recurvirostre (Hedw.) (Bryoerythrophyllum)
recurvirostre Hedw. (Gymnostomum)
recurvirostre Hedw. (Eucladium), see Gymnostomum recurvirostre
recurvirostre Hedw. (Hymenostylium), see Gymnostomum recurvirostre
recurvirostris Hedw. (Barbula), see Bryoerythrophyllum recurvirostre
recurvum P. Beauv. (Sphagnum)
recurvus Greene (Astragalus)
recutita (Matricaria), see Matricaria chamomilla
recutita L. (Chamomilla), see Matricaria chamomilla
recutita L. (Matricaria), see Matricaria chamomilla
redactus Pennell & Keck ( Penstemoneriantherus)
?redfieldii Porter (Solidago virgaurea var. ), see Solidago simplex ssp. randii var. randii
rediviva L. (Lunaria)
rediviva Pursh (Lewisia)
redowskiana Bailey, not C. A. Mey. (Carex), see Carex gynocrates
redowskii (Hornem.) (Lappula)
redowskii auct. (Lappula), see Lappula marginata
reducta Bailey ( Carextribuloides)
redundans (Rubus), see Rubus invisus
redundans Bailey (Rubus), see Rubus invisus
Reevesia (Sterculiaceae)
reflexa (Brid.) (Barbula)
reflexa Raf. (Tradescantia)
reflexa Hornem. (Salvia)
reflexa Greene ( Potentillaglandulosa)
reflexa Gardn., see Prunus reflexa
reflexilobum H. Lindb. (Taraxacum)
reflexum (Starke) (Brachythecium)
reflexum (Bicknell) ( Asarumcanadense)
reflexum (Norrl.) (Pilosella)
reflexum Nels. ( Trifoliumlongipes)
reflexum L. (Trifolium)
reflexum (Sedum), see Sedum rupestre
reflexum L. (Sedum), see Sedum rupestre
reflexum Norrl. (Hieracium), see Pilosella reflexum
reflexus Torr. & Gray (Astragalus)
refracta Klatt (Freesia)
refracta (Muhl.) (Eragrostis)
refracta DC. (Roemeria)
refracta Muhl. (Poa), see Eragrostis refracta
regalis S.F. Gray (Consolida)
regalis L, 1753 (Osmunda)
regia (Raystonea)
regia L. (Juglans)
regia (L.) (Cystopteris)
regionalis Bailey (Rubus)
× rehderi Trel. (Quercus)
?× reichardtii Kern. (Salix), see Salix caprea × cinerea
reichenbachiana Jordan ex Boreau (Viola)
reifschneiderae Edwin (Mimulus), see Mimulus nanus ssp. nanus
relicta Jalas ( Violarupestris)
relicta Erlanson (suffulta var. ), see Rosa arkansana var. suffulta
religiosum (L.) (Cochlospermum)
reliquum Freeman (Trillium)
remota L. (Carex)
remota (Fors.) (Glyceria)
remota Forselles (Poa)
remota (Greene) (Sphaeralcea)
remota Greene (Euthamia), see Solidago tenuifolia var. tenuifolia
remota Greene, see Solidago tenuifolia var. tenuifolia
remotella Kihlm. ( Euphrasiaofficinalis)
remotifolium (Hook.) (Cirsium)
remotijugum H. Lindb. (Taraxacum)
remotiuscula (Komarov) ( Dryopterisfragrans)
remotiusculum Komarov, 1911 (Nephrodium fragrans v. ), see Dryopteris fragrans v. remotiuscula
remotum Schrank (Lolium)
remotus (M.E. Jones) (Astragalus)
remulcus (Gray) ( Astragalustephrodes)
renifolia Gray (Viola)
reniforme Nutt. (Ribes), see Ribes cereum var. cereum
reniformis Muhl. (Cacalia)
reniformis Engelm. ex Benth. (Mimulus), see Mimulus glabratus var. jamesii
reniformis Muhl. (Mesadenia), see Cacalia reniformis
renneri H. Scholz (Oenothera)
repandatum Funck, see Tetrodontium brownianum
repandum L. (Erysimum)
repandum Rollins (Thelypodium)
?repandum Funck (borwnianum var. ), see Tetrodontium brownianum
repens (Brid.) (Platygyrium)
repens (Serenoa)
repens Michx. (Juncus)
repens (L.) (Goodyera)
repens (Laest.) ( Agrostisgigantea)
repens (L.) (Elymus)
repens R. Br. (Lepturus)
repens (Boenn.) ( Zannichelliapalustris)
repens (L.) (Acroptilon)
repens L. (Centaurea)
repens (Lindl.) (Mahonia)
repens Bello (Opuntia)
repens Forst (Dichondra)
repens L. (Ononis)
repens L. (Trifolium)
repens (Boerhaavia)
repens Thunb. (Oxalis)
repens L. (Ranunculus)
repens (Coprosma)
repens L. (Mitchella)
repens L. (Salix)
repens (L.) (Linaria)
?repens L. (Jussiaea)
repens (Agropyron), see Elymus repens
repens (Boerhavia), see Boerhaavia repens
repens (Convolvulus sepium var. ), see Calystegia sepium ssp. angulata
repens (Epipactis), see Goodyera repens
repens (Triticum), see Elymus repens
repens Brid. (Entodon), see Platygyrium repens
repens Brid. (Isopterygium), see Herzogiella seligeri
repens L. (Agropyron), see Elymus repens
repens L. (Amoria), see Trifolium repens
repens L. (Convolvulus), see Calystegia sepium ssp. angulata
repens L. (Elytrigia), see Elymus repens
repens L. (Epipactis), see Goodyera repens
repens L. (Triticum), see Elymus repens
repens L. (sepium var. ), see Calystegia sepium ssp. angulata
repens Lindl. (Berberis), see Mahonia repens
repens Nutt. (Juniperus), see Juniperus horizontalis
repens of auth., not L.? (Jussiaea), see Jussiaea diffusa
repens repens × rosmarifolia (Salix), see Salix repens repens × rosmarinifolia
repens repens × rosmarinifolia (Salix)
repens × vulgaris (Linaria)
repletum (Dahlst.) ( Taraxacumofficinale)
reptabundus Rurpr. (Ranunculus)
reptabundus × sceleratus (Ranunculus)
reptans (L.) (Lepidozia)
reptans (Lam.) (Draba)
reptans L. (Ajuga)
reptans L. (Polemonium)
reptans L. (Ranunculus)
reptans L. (Potentilla)
?reptans Laest., see Puccinellia reptans
reptans (Atropis), see Puccinellia reptans
reptans Nees. (Eragrostis), see Eragrostis hypnoides
reravus (Rubus), see Rubus racemiger
reravus Bailey (Rubus), see Rubus racemiger
Reseda L. (Resedaceae)
Resedaceae (Magnoliopsida)
resedifolia Less., see Senecio resedifolius
resedifolius Less. (Senecio)
residuum Norrl. ( Hieraciumschmidtii)
residuus Jepson (Astragalus filipes var. ), see Astragalus filipes
resiliens Kunze, 1844 (Asplenium)
resinosa Ait. (Pinus)
resinosum Torr. (Eupatorium)
resinosum Pursh. (Ribes), see Ribes glandulosum
Resnova (Hyacinthaceae), see Scilla
Restionaceae (Liliopsida)
resupinata B. D. Greene (Utricularia)
resupinata L. (Amoria), see Trifolium resupinatum
resupinatum L. (Trifolium)
?resupinatum Tayl. (cupressiforme ssp. ), see Hypnum cupressiforme
?resupinatum Tayl. (cupressiforme var. ), see Hypnum cupressiforme
reticulata L. (Annona)
reticulata Jacq. (Aristolochia)
reticulata Greene (Wyethia)
reticulata (Orobanche)
reticulata Blanco (Citrus)
reticulata L. (Salix)
reticulata Humb. & Bonpl. (Quercus), see Quercus rugosa
reticulatum Don. (Allium)
reticulatum Lindeb. (Hieracium)
reticulatus L. (Hyoscyamus)
retorsa Suksd. (Amsinckia)
retroflexa Muhl. (Carex)
retroflexa (Vahl.) (Dinebra)
retroflexa auct. (Puccinella), see Puccinellia distans ssp. borealis
retroflexum H. Lindb. (Taraxacum)
retroflexus L. (Amaranthus)
retrofracta (Grah.) ( Arabisholboellii)
retrorsa Schwein. (Carex)
retrorsa (Benth.) (Agoseris)
retrorsa (Heller) ( Mirabilisbigelovii)
retrorsum J.T. Howell (Nama)
retusa (Hoya)
retusa (Crotalaria)
retusus Fern. ( Lathyruspalustris)
reuteri Boiss. (Fumaria)
Reuteri Wettst. p.p. (Euphrasia), see Euphrasia officinalis var. pilifera
revalense H. Lindb. (Taraxacum)
reventiformis (Rydb.) (Astragalus)
reventus Gray (Astragalus)
reverchonii Gray (lotiflorus var. ), see Astragalus lotiflorus
revoluta Steyermark (Grindelia)
revoluta Suksdorf (Anaphalis margaritacea var. ), see Anaphalis margaritacea
revolutum (Mitt.) (Hypnum)
revolutum Smith (Erythronium)
revolutum (Erythornium), see Erythronium revolutum
revolutum Jepson (Nama hispidum var. ), see Nama hispidum
revolvens (Sw.) (Drepanocladus)
rhabarbarum L. (Rheum)
Rhabdoweisia B.S.G. (Dicranaceae)
Rhacomitrium Lor. (Grimmiaceae), see Racomitrium
Rhamnaceae Juss. (Magnoliopsida)
rhamnifolia Pallas (Salix)
rhamnoides L. (Hippophae)
rhamnoides (Hippophaes), see Hippophae rhamnoides
Rhamnus L. (Rhamnaceae)
Rhamphocarya (Juglandaceae), see Carya
Rhaphiolepis Lindl., 1820 (Rosaceae)
Rhapidophyllum (Arecaceae)
Rhapis (Arecaceae)
?rhaponticum L. (Rheum)
rhaptocarpa Schwaegr. (Encalypta)
rhenana Lorb. (Riccia)
rhenana Boreau (Centaurea)
Rheum L. (Polygonaceae)
rhexifolia Rydb. (Castilleja)
Rhinanthus L. (Scrophulariaceae)
rhipidophylla Gand. (Crataegus)
Rhizakenia (Hydrocharitaceae), see Limnobium
rhizina Blytt ex Lindblom (Carex), see Carex pediformis ssp. rhizodes
rhizodes (Blytt) ( Carexpediformis)
Rhizomnium (Broth.) T. Kop. (Mniaceae)
Rhizophoraceae R. Br. (Magnoliopsida)
rhizophorae Planch. & Triana (Pelliciera)
rhizophylla L., 1753 (Asplenium), see Camptosorus rhizophyllus
rhizophyllus (L.) (Camptosorus)
rhodantha (Gray) (Rhodiola)
rhodantha (Arabis), see Arabis holboellii var. retrofracta
rhodantha K. Schum. (Opuntia), see Opuntia erinacea var. utahensis
rhodanthum Gray (Sedum), see Rhodiola rhodantha
rhodinsulanus Bailey (Rubus), see Rubus plicatifolius
Rhodiola L. (Crassulaceae)
rhodiola DC. (Sedum), see Rhodiola rosea
Rhodobryum (Schimp.) Limpr. (Bryaceae)
Rhodochiton Zucc. (Scrophulariaceae)
Rhododendron L. (Ericaceae)
Rhodolaena (Sarcolaenaceae)
Rhodophora Neck., 1790 (Rosaceae), see Rosa
rhodophyllus Rydb. (Rubus), see Rubus argutus
Rhodopsis Reichb., 1841 (Rosaceae), see Rosa
rhodosperma Dcne. (Plantago)
Rhodotypos Sieb. & Zucc., 1835 (Rosaceae)
Rhodotypus Endl., 1842 (Rosaceae), see Rhodotypos
rhoeadifolia (Bieb.) ( Crepisfoetida)
rhoeas L. (Papaver)
Rhoeo Hance ex Walp. (Commelinaceae), see Tradescantia
rhoifolia (Pterocarya)
Rhoiptelea (Rhoipteleaceae)
Rhoipteleaceae (Magnoliopsida)
rhombifolia Nutt. (Alnus)
rhombifolia L. (Sida)
rhombifolia (Sarg.) ( Crataegusmacracantha)
rhombipetala Nutt. (Oenothera)
rhomboidea Greene (Saxifraga)
Rhopaloblaste (Arecaceae)
Rhopalocarpus (Sphaerosepalaceae)
Rhopalostylis (Arecaceae)
Rhus (Anacardiaceae)
Rhyncharrhena F. Muell. (Asclepiadaceae)
rhynchophysa Fischer, C.A. Meyer & Avé-Lall. (Carex)
Rhynchospora Vahl (Cyperaceae)
Rhynchostegiella (B.S.G.) Limpr. (Brachytheciaceae)
Rhynchostegium B.S.G. (Brachytheciaceae)
Rhytidiaceae (Bryales)
Rhytidiadelphus (Limpr.) Warnst. (Rhytidiaceae)
Rhytidium (Sull.) Kindb. (Rhytidiaceae)
Ribes L. (Grossulariaceae)
ribes Bailey (Rubus), see Rubus setosus
Riccardia S. Gray (Aneuraceae)
Riccia L. (Ricciaceae)
Ricciaceae (Marchantiales)
Ricciocarpos Corda (Ricciaceae)
ricei Bailey (Rubus), see Rubus aboriginum
richardsiana Brenan (Medusandra)
richardsoni R. Br. (Carex)
Richardsoni (Carex), see Carex richardsoni
richardsonii (Mitt.) (Calliergon)
richardsonii Schrad. (Agropyron)
richardsonii (Benn.) (Potamogeton)
richardsonii (Hook) (Hymenoxys)
richardsonii (Sweet) (Descurainia)
richardsonii Fisch. & Trautv. (Geranium)
richardsonii ( Salixlanata)
richardsonii R. Br. (Heuchera)
richardsonii Dougl. (Penstemon)
Richardsonii (Agropyron), see Agropyron richardsonii
Richardsonii (Potamogeton), see Potamogeton richardsonii
richardsonii (Festuca), see Festuca rubra ssp. arctica
richardsonii Hooker (Festuca), see Festuca rubra ssp. arctica
richardsonii Sheldon (Astragalus), see Astragalus australis
richardsonii Sheldon (aboriginorum var. ), see Astragalus australis
richii Fernald ( Carexhormathodes)
Richii (Carex hormathodes var. ), see Carex hormathodes var. richii
× richteri Baenitz (Quercus), see Quercus coccinea var. coccinea
Ricinus L. (Euphorbiaceae)
rickardii Welsh, F. Beck & K. Caplow ( Astragalusconjunctus)
riddelii Frank ex Riddell (Solidago)
Riddelii (Solidago), see Solidago riddelii
riddellii Frank ex Riddell, see Solidago riddelii
riddellii House (Stachys), see Stachys nuttallii
ridiuscula Anders. ( Salixhumilis)
ridiuscula Porter (Solidago), see Solidago speciosa var. angustata
riederianus Fisch. (Trollius)
riens Greene (Mimulus cardinalis var. ), see Mimulus cardinalis
rigens Hartm. (Poa), see Poa alpigena
rigens auct. (Poa), see Poa arctica
rigida (Pursh) ( Sagittariaheterophylla)
rigida Bailey ( Carexgrisea)
rigida (L.) (Desmazeria)
rigida Boiss. ex Heldr. (Anthemis)
rigida (Nutt.) (Artemisia)
rigida L. (Solidago)
rigida Nutt. ex Benth. (Stachys)
rigida Mill. (Pinus)
rigida (Carex), see Carex bigelowii
rigida (Phlox), see Phlox caespitosa
rigida Gooden. (Carex), see Carex bigelowii
rigidior (L.) (Oxypolis)
rigidula Hedw. (Barbula), see Didymodon rigidulus
rigidula Hedw. (Dicranella), see Anisothecium rigidulum
rigidulum (Hedw.) (Anisothecium)
rigidulus Hedw. (Didymodon)
rigidulus Gray ( Asteroblongifolius)
rigidum Gaudin (Lolium)
rigidum Pursh. (Linum)
?rigidum Hn. (coll.) (Hieracium)
rigidum L., see Solidago rigida
rigidum Peck (Ribes divaricatum var. ), see Ribes divaricatum var. divaricatum
rigidum Sw. (Aspidium), see Dryopteris villarsii
rigidus Roth (Bromus)
rigidus (Cass.) (Helianthus)
rigidus White (Lathyrus)
rigidus (Benth.) (Lotus)
?rigidus Desf. (Helianthus), see Helianthus scaberrimus
rigidus (Sericocarpus), see Aster curtus
rimosa Bast. (Valerianella)
ringens Vahl (Aristolochia)
ringens L. (Mimulus)
Rinorea (Violaceae)
riograndensis Iltis ( Polanisiadodecandra)
riparia (H. Lindb.) (Dicranella)
riparia Curtis (Carex)
× riparia Laughlin (Quercus)
riparia C. Wright ( Passifloraciliata)
riparia (Raf.) ( Verbenaurticifolia)
riparia Engelmann, 1846 (Isoetes)
riparia H. Lindb. (Kiaeria blyttii var. ), see Dicranella riparia
riparia Michx. (Vitis), see Vitis vulpina
riparia Tayl. (Jungermannia), see Jungermannia atrovirens
riparia × rostrata (Carex)
riparioides (Hedw.) (Rhynchostegium)
riparium (Hedw.) (Leptodictyum)
riparium Ängstr. (Sphagnum)
?riparium Hüb. (cupulatum var. ), see Orthotrichum cupulatum
riparium Hedw. (Amblystegium), see Leptodictyum riparium
riparium Mitt. (Mnium), see Mnium marginatum
riparius Barneby (Astragalus)
?ripensis (Carex rigida var. ), see Carex aquatilis × bigelowii
?ripensis Laest. (Carex rigida var. ), see Carex aquatilis × bigelowii
ripleyi Barneby (Astragalus)
ristalitius (Acridocarpus)
ritchiana (Nannorrhops)
ritro L. (Echinops)
rivale Wats. (Trillium)
rivale L. (Geum)
rivale × urbanum (Geum)
rivalis Nutt. (Potentilla)
rivalis Eastw. (Rosa), see Rosa pisocarpa
rivalis Eastw. (pisocarpa var. ), see Rosa pisocarpa
riviniana Reichenb. (Viola)
riviniana × rupestris (Viola)
rivulare B.S.G. (Brachythecium)
rivulare (Brid.) ( Schistidiumalpicola)
rivulare Broth. (Hygrohypnum), see Hygrohypnum alpestre
rivularis (Schrad.) ( Chiloscyphuspolyanthos)
rivularis (Ravenea)
rivularis Dougl. (Lupinus)
rivularis (Dougl.) (Iliamna)
rivularis (Astilbe)
rivularis L. (Saxifraga)
rivularis Brid. (Grimmia alpicola var. ), see Schistidium alpicola var. rivulare
rivularis C. C. Gmel. (Montia), see Montia fontana
rivularis Heller (rigida ssp. ), see Stachys rigida var. rigida
rivularis Nees (Madotheca), see Porella cordaena
rivularis Nutt. (Mimulus), see Mimulus guttatus
rivularis Suksdorf (Symphoricarpos), see Symphoricarpos albus var. laevigatus
rivularis auct. (Cardamine), see Cardamine pratensis ssp. polemonioides
rixosus Bailey (Rubus), see Rubus severus
roanensis Porter (Solidago)
roanensis Ashe (Crataegus)
robbinsiana Oakes (Potentilla)
Robbinsiana (Potentilla), see Potentilla robbinsiana
robbinsiana Sarg. (Crataegus), see Crataegus silvicola var. beckwithae
robbinsii Oakes (Eleocharis)
robbinsii Oakes (Potamogeton)
robbinsii (Oakes) (Astragalus)
× robbinsii Trel. (Quercus)
robbinsii Constance ( Phaceliastrictiflora)
Robbinsii (Astragalus), see Astragalus robbinsii
Robbinsii (Eleocharis), see Eleocharis robbinsii
Robbinsii (Potamogeton), see Potamogeton robbinsii
Robbinsii (Senecio), see Senecio schweinitzianus
robbinsii Oakes ex Rusby (Senecio), see Senecio schweinitzianus
Robertiana (Dryopteris), see Gymnocarpium robertianum
robertiana Hoffm. (Currania), see Gymnocarpium robertianum
robertiana Hoffm. (Dryopteris), see Gymnocarpium robertianum
robertiana Hoffm. (Lastrea), see Gymnocarpium robertianum
robertiana Hoffm. (Phegopteris), see Gymnocarpium robertianum
robertianum L. (Geranium)
robertianum (Hoffmann, 1795) (Gymnocarpium)
Robertianum (Geranium), see Geranium robertianum
robertianum Hoffmann, 1795 (Polypodium), see Gymnocarpium robertianum
Robinia L. (Fabaceae)
robinsonii Fernald ( Carexretrorsa)
robur L. (Quercus)
robusta (Washingtonia)
robusta Pollard ( Cassiachamaecrista)
robusta Gaertn. (Shorea)
robusta C.H. Muller (Quercus)
robusta (J.F. Macbr.) (Phacelia)
robusta A. Cunn. (Grevillea)
robusta (Pancher & Sebert) (Strasburgeria)
robusta Engelmann, 1867 (Isoetes echinospora var. ), see Isoetes muricata
robusta Nutt. p.p. (Grindelia), see Grindelia camporum var. camporum
robustior Blytt ex Andersson ( Carexcanescens)
robustior (Hook.) ( Astragaluslaxmannii)
robustum Schnitz. (Lacistema)
robustum (Rupr.) (Botrychium)
robustum B.S.G. (Dicranum), see Dicranum drummondii
robustum Braun, 1844 (Equisetum), see Equisetum hyemale v. elatum
robustum Eaton, 1931 (Lycopodium inundatum v. ), see Lycopodiella × copelandi
robustum Warnst., see Sphagnum russowii
robustus (Pursh) (Schoenoplectus)
robustus (Engelm.) (Juncus)
robustus Scribn. & J. G. Sm. (Elymus)
robustus (Scirpus), see Schoenoplectus robustus
robustus Pursh (Scirpus), see Schoenoplectus robustus
Rochea DC. (Crassulaceae), see Crassula
rockii Kükenth. (Scirpus), see Schoenoplectus juncoides
roderickii Shevock & Allen ( Erythroniumcitrinum)
rodiaei Schk. (Nectandra)
roebelenii (Phoenix)
Roemeria Medicus (Papaveraceae)
roemerianus Scheele (Juncus)
Roemerianus (Juncus), see Juncus roemerianus
roeseanum B.S.G. (Plagiothecium), see Plagiothecium cavifolium
roeseanum B.S.G. (sylvaticum var. ), see Plagiothecium cavifolium
roezlii Regel (Penstemon)
× rolfsii Small (Quercus)
Rollandii Vict. & Rousseaeu (Lathyrus), see Lathyrus venosus var. intonsus
rollandii Fern. (Scirpus), see Trichophorum pumilum
rollandii Fern. (pumilum ssp. ), see Trichophorum pumilum
rollandii Fern. (pumilum var. ), see Trichophorum pumilum
rollandii Fern. (pumilus ssp. ), see Trichophorum pumilum
rollandii Fern. (pumilus var. ), see Trichophorum pumilum
rollandii Fern., see Trichophorum pumilum
rollinsii Math. & Const. (Lomatium)
?romanum (L.) (Erodium)
Romanzoffia Cham. (Hydrophyllaceae)
romanzoffiana Cham. (Spiranthes)
romanzoffiana (Sprinathes), see Spiranthes romanzoffiana
romanzofficianum (Arecastrum)
romanzovii Cham. ex Spreng. (Pedicularis), see Pedicularis chamissonis
Rondonanthus (Eriocaulaceae), see Paepalanthus
roribaccus (Bailey) (Rubus)
Roridulaceae (Magnoliopsida), see Byblidaceae
Rorippa Scop. (Brassicaceae)
Rosa L., 1753 (Rosaceae)
rosa Bailey (Rubus)
rosacea (Munz & Johnston) ( Sphaeralceaambigua)
rosacea Moench (Saxifraga)
Rosaceae Juss. (Magnoliopsida)
rosaefolius Sm. (Rubus)
rosagnetis (Rubus), see Rubus deamii
rosagnetis Bailey (Rubus), see Rubus deamii
× rosalba Dippel (Spiraea)
rosarius Bailey (Rubus)
roscidus Burgess (Aster), see Aster macrophyllus
rosea Vent. (Tradescantia)
rosea Schkuhr (Carex)
rosea Ruiz & Pav. (Lapageria)
rosea Nels. & Macbr. (Balsamorhiza)
rosea Nutt. (Coreopsis)
rosea L. (Atriplex)
rosea L. (Rhodiola)
rosea L. (Alcea)
rosea Lindb. fil. ( Epilobiumangustifolium)
rosea Hn. ( Oxalisacetosella)
rosea Neum. ( Trientaliseuropaea)
rosea Hook. (Viviania)
rosea (Althaea), see Alcea rosea
rosea L. (Althaea), see Alcea rosea
rosea L. (Sedum), see Rhodiola rosea
roseana Hend. (Angelica)
roseata (Rydb.) ( Spiraeadouglasii)
rosei (Sabal)
Rosendahlii (Rubus), see Rubus plicatifolius
rosendahlii Bailey (Rubus), see Rubus plicatifolius
roseum (Hedw.) (Rhodobryum)
roseum L. (Allium)
roseum Lindb. (Chrysanthemum)
roseum (Hooker) (Helipterum)
roseum Schreber (Epilobium)
roseum Wats (Calyptridium)
roseum (Sedum), see Rhodiola rosea
roseum Neum. (intybus f. ), see Cichorium intybus
roseus Michx. (Streptopus)
roseus (Desf.) ( Asternovae-angliae)
roseus (Calochortus maweanus var. ), see Calochortus tolmiei
rosmarifolia Thunb. (Grubbia)
rosmarinifolia L. (Salix)
rosmarinifolium Hänke (Epilobium), see Epilobium dodonaei
Rosmarinus (Lamiaceae)
rossbergianus Blanchard (Rubus)
Rossbergianus (Rubus), see Rubus rossbergianus
rossica (Boshnyakia)
rossica Nasarov (Salix), see Salix viminalis
rossii (R. Br. ex Richards) (Minuartia)
rossii (R. Br.) (Acomastylis)
rossii (R. Br.) (Geum)
rossii (Arenaria rossii var. ), see Minuartia rossii var. rossii
rossii (Arenaria), see Minuartia rossii
rossii R. Br. (Geum), see Acomastylis rossii
rossii R. Br. (Sieversia), see Acomastylis rossii
rossii R. Br. ex Richards (Arenaria), see Minuartia rossii
rostani Reuter (Gentiana)
Rostani (Gentiana), see Gentiana rostani
rostellata Torr. (Eleocharis)
rostellata Wallr. (Agrimonia)
?rostellata (Ruppia maritima ssp. ), see Ruppia maritima
?rostellata Koch (Ruppia maritima ssp. ), see Ruppia maritima
rostkoviana Hayne (Euphrasia)
Rostokowiana (Euphrasia), see Euphrasia officinalis f. fennica
rostrata Stokes (Carex)
rostrata Shuttlw. (Cuscuta)
rostrata Schlechtend. (Eucalyptus)
rostrata Richards (Salix)
rostrata Pursh. (Viola)
rostrata × rotundata (Carex)
rostrata × vesicaria (Carex)
rostratum (Schrad.) (Plagiomnium)
rostratum Wolf (Erythronium)
rostratum Dunal. (Solanum)
rostratum (Trifolium), see Trifolium variegatum
rostratum Muhl. (Panicum), see Panicum anceps
rostratum Schrad. (Mnium), see Plagiomnium rostratum
Rotala L. (Lythraceae)
rotata (L.) (Pleurogyne)
rothii Web. & Mohr (Andreaea)
rothrockii Gray (Nama)
rothrockii Gray (Stachys)
rotunda (Aristolochia)
rotundata Wahlenb. (Carex)
rotundata Sarg. (Crataegus), see Crataegus jackii
rotundifolia (Livistona)
rotundifolia Banks (Orchis)
rotundifolia M. & K. ( Potamogetonperfoliatus)
rotundifolia (Asclepias)
rotundifolia Spach ( Betulanana)
rotundifolia L. (Campanula)
rotundifolia L. (Drosera)
rotundifolia Torr. ex S. Wats. (Phacelia)
rotundifolia (L.) (Mentha)
rotundifolia L. (Pyrola)
rotundifolia (Huth) ( Calthabiflora)
rotundifolia Moench. (Crataegus)
rotundifolia Michx. (Viola)
rotundifolia Michx. (Vitis)
rotundifolia Willd. (Salvinia)
?rotundifolia Dum.-Cours. (Amelanchier)
?rotundifolia Trautv. (Salix)
?rotundifolia L. (Malva), see Malva pusilla
?rotundifolia Roem. (Amelanchier), see Amelanchier spicata
rotundifolia (Malva), see Malva pusilla
rotundifolia (Pirola), see Pyrola rotundifolia
rotundifolia Banks (Habenaria), see Orchis rotundifolia
rotundifolia Michx., see Ribes rotundifolium
rotundifolia Roem. (Amelanchier), see Amelanchier spicata
rotundifolium L. (Bupleurum)
rotundifolium (Smyrnium)
rotundifolium L. (Eupatorium)
rotundifolium L. (Geranium)
rotundifolium Michx. (Ribes)
rotundifolium Wahlenb. (Thalictrum minus var. ), see Thalictrum minus ssp. kemense
rotundior (Rubus), see Rubus wheeleri
rotundior Bailey, see Rubus wheeleri
rotundus Britton ( Senecioobovatus)
Roupala (Proteaceae)
rousseauiorum (Rosa), see Rosa blanda var. blanda
rousseauiorum Boivin (Rosa), see Rosa blanda var. blanda
rowleei (Rubus), see Rubus wheeleri
rowleei Bailey (Rubus), see Rubus wheeleri
Roxburghia (Roxburghiaceae), see Stemona
Roxburghiaceae (Liliopsida)
roxburghii (Capparis)
Royena L. (Ebenaceae)
roylei Walp. (Impatiens), see Impatiens glandulifera
Roystonea (Arecaceae)
ruaxes (Pays. & St John) ( Drabaventosa)
rubella (Nees) (Cephaloziella)
rubella Reuter (Capsella)
rubella (Wahlenb.) (Minuartia)
?× rubella Dipp. (Spiraea)
rubella (Arenaria), see Minuartia rubella
rubellum Wils. (Sphagnum)
rubellum Gilbert (Athyrium filix-femina v. michauxii f. ), see Athyrium filix-femina v. angustum
rubellum Gilbert, 1901 (Athyrium filix-femina v. ), see Athyrium filix-femina v. angustum
rubellus Moench. (Lycopus)
rubellus Gray (Mimulus)
rubellus B.S.G. (Didymodon), see Bryoerythrophyllum recurvirostre
rubens Mitt. (Bryum)
rubens L. (Bromus)
rubens Stephan ex Willd. (Pedicularis)
rubens Sarg. (Picea)
× rubens Schrank (Salix), see Salix alba × fragilis
ruber Mart. (Daemonorops)
ruber (L.) (Centranthus)
rubescens Salm-Dyck ex DC. (Opuntia)
rubescens Torr. (Heuchera)
rubescens (Epilobium), see Epilobium glandulosum var. glandulosum
rubescens Rydb. (Epilobium adenocaulon ssp. ), see Epilobium ciliatum
rubescens Rydb. (Epilobium), see Epilobium ciliatum
Rubia L., 1753 (Rubiaceae)
Rubiaceae Juss., 1789 (Magnoliopsida)
rubicunda Jepson ( Prunussubcordata)
rubicunda N. Reese ( Pediculariscontorta)
rubicundum (Dahlst.) (Taraxacum)
rubida Piper (Castilleja)
rubiginosa (Epipactis latifolia ssp. ), see Epipactis atrorubens
rubiginosa (Rosa), see Rosa eglanteria
rubiginosa Crantz. (latifolia ssp. ), see Epipactis atrorubens
rubiginosa L. (Rosa), see Rosa eglanteria
rubiginosa Popova (Aegilops cylindrica var. ), see Aegilops cylindrica
rubiginosus Beetle p.p. (Scirpus), see Schoenoplectus acutus var. occidentalis
rubiginosus Beetle, see Schoenoplectus acutus var. occidentalis
rubioides Andr. (Bauera)
rubra (L.) (Cephalanthera)
rubra (L.) (Festuca)
rubra L. (Asclepias)
rubra Bong. (Alnus)
rubra T. Ulvinen ( Betulapubescens ssp. pubescens)
rubra (L.) (Spergularia)
rubra Nels. (Salicornia)
rubra L. (Quercus)
rubra Gray ( Monardafistulosa)
rubra L. (Morus)
rubra L. (Passiflora)
rubra (L.) (Gilia)
rubra (Aiton) (Actaea)
rubra (Hill.) (Filipendula)
rubra Muhl. (Ulmus)
?rubra (Odontites), see Odontites vulgaris
?rubra (Odontitis), see Odontites vulgaris
?rubra Wahlenb. (Agrostis), see Agrostis mertensii
rubra Gil. (Odontites), see Odontites vulgaris
rubra Hill. (Ulmaria), see Filipendula rubra
rubra L. (Restuca), see Festuca rubra
rubra Michx. (Vitis), see Vitis palmata
rubra × shumardii (Quercus), see Quercus × riparia
rubra × velutina (Quercus), see Quercus × hawkinsiae
rubricaulis Klebahn (Oenothera)
rubricaulis Fourr. ex Rydb. (Drymocallis)
rubricaulis DC. (hirsutula ssp. ), see Grindelia hirsutula var. hirsutula
rubricaulis Schwein (Gentiana), see Gentiana linearis
rubricosus Fern. (Scirpus), see Scirpus cyperinus
rubricosus Fern. (cyperinus var. ), see Scirpus cyperinus
rubrifolia Engelm. ex Coult. (Opuntia), see Opuntia erinacea var. ursina
rubrifolia Vill. (Rosa), see Rosa glauca
rubripes (Rydb.) ( Potentillaconcinna)
rubrisetus (Rubus), see Rubus trivialis
rubrisetus Rydb. (Rubus), see Rubus trivialis
rubrotinctus Fernald (Scirpus)
rubrotinctus Fern. (Scirpus), see Scirpus microcarpus
rubrotinctus Fern. (microcarpus var. ), see Scirpus microcarpus
rubrum Hedw. (Splachnum)
rubrum L. (Acer)
rubrum L. (Chenopodium)
rubrum L. (Ribes)
rubrum Farw. (Erythronium americanum var. ), see Erythronium americanum ssp. harperi
rubrum Glarcke (Melandrium), see Silene dioica
rubrum Lindb. (Anisothecium), see Anisothecium varium
rubrum auct. (Ribes), see Ribes spicatum ssp. spicatum
rubrum × spicatum (Ribex), see Ribes × houghtoniatum
Rubus L., 1753 (Rosaceae)
Rudbeckia L. (Asteraceae)
ruderale L. (Lepidium)
ruderalis Sw. (Ballota nigra ssp. ), see Ballota nigra ssp. nigra
ruderalis Sw. (Ballota), see Ballota nigra ssp. nigra
rudgei Bailey ( Carexdebilis)
Rudgei (Carex debilis var. ), see Carex debilis var. rudgei
rudis Sauer (Amaranthus)
× rudkinii Britt. (Quercus)
× ruedtii Kneuck (Carex), see Carex flava × virdidula
rufa Small. (Oxalis), see Oxalis corniculata
Rufacer (Aceraceae), see Acer
rufescens (Brid.) (Orthothecium)
rufescens (With.) (Anisothecium)
rufescens (Loeske) ( Scapaniairrigua)
rufescens (Andersson) ( Eriophorumrusseolum)
rufescens (Cojoba)
rufescens (Hieracium), see Hieracium saxifragum
rufescens (Pithecllobium), see Cojoba rufescens
rufescens Fr. (Hieracium), see Hieracium saxifragum
rufescens Nees & Hornsch. (subsecundum var. ), see Sphagnum auriculatum var. auriculatum
rufescens Rehd. (Quercus prinoides var. ), see Quercus prinoides
rufescens Schrad. (Potamogeton), see Potamogeton alpinus
rufescens With. (Dicranella), see Anisothecium rufescens
rufida Engelm. (Opuntia)
rufidula (Small) ( Saxifragaoccidentalis)
?rufidula Michaux (ilvensis ssp. ), see Woodsia glabella
rufidulum Raf. (Viburnum)
rufispina (Engelm. & Bigelow ex Engelm.) ( Opuntiapolyacantha)
rufomicans Koehne, see Prunus rufomicans
rufula (Wooton & Standl.) (Prunus)
rufula Wooton & Standl. (Padus), see Prunus rufula
rufus (Huds.) (Blysmus)
rufus (Scirpus), see Blysmus rufus
rufus Huds. (Scirpus), see Blysmus rufus
rugelii (C. Müll.) (Anomodon)
rugelii Rendle (Trillium)
rugelii Dcne. (Plantago)
Rugelii (Plantago), see Plantago rugelii
× ruggii Tryon, 1940 (Osmunda), see Osmunda claytoniana × regalis
rugicum Laur. (Mnium), see Plagiomnium ellipticum
rugosa Mill (Solidago)
rugosa Née (Quercus)
rugosa Kearney ( Sphaeralceaambigua)
rugosa Thunb. ex Murray (Rosa)
rugosa (Alnus), see Alnus incana
rugosum (Hedw.) (Rhytidium)
rugosum (L.) (Rapistrum)
rugosum Funck, see Dicranum polysetum
rugosum Hedw. (Hylocomium), see Rhytidium rugosum
rugulosa (Greene) ( Violacanadensis)
?× rugulosa Ands. (Salix), see Salix aurita × myrtilloides
Rumex L. (Polygonaceae)
rumpha (Caryota)
runcinata Nutt. (Stephanomeria)
runcinata (James) (Crepis)
× runcinata (A. DC.) (Quercus)
Runyonia (Agavaceae), see Agave
rupestre Schwaegr. (Orthotrichum)
rupestre L. (Sedum)
rupestre L., 1753 (Lycopodium), see Selaginella rupestris
rupestris Hedw. (Andreaea)
rupestris (Hartm.) (Zygodon)
rupestris All. (Carex)
rupestris Raf. (Solidago)
rupestris L. (Silene)
rupestris (Umbilicus)
rupestris Greene (Phacelia)
rupestris (L.) (Drymocallis)
rupestris (Pallas) (Patrinia)
rupestris F.W. Schmidt (Viola)
rupestris Scheele (Vitis)
rupestris (L.) (Selaginella)
rupestris (Arabis), see Arabis hirsuta var. glabrata
rupestris (Potentilla), see Drymocallis rupestris
rupestris L. (Potentilla), see Drymocallis rupestris
rupestris R. Br. (Draba), see Draba norvegica
rupestris Waldst. & Kit. (Senecio), see Senecio squalidus
rupicola (Phoenix)
rupicola Fernald (Antennaria)
rupicola (Rydb.) (Cardamine)
rupicola (English) ( Lewisiacolumbiana)
rupicola Piper (Castilleja)
rupicola Coville & Grant (Mimulus)
rupicola (Piper) (Penstemon)
rupicola (Claytonia), see Montia parvifolia var. parvifolia
rupicolum (Jones) ( Sedumlanceolatum)
Ruppia L. (Potamogetonaceae)
Ruppiaceae (Liliopsida), see Potamogetonaceae
ruprechtii Jalas ( Sedumtelephium)
ruprechtii (Hylotelephium telephium ssp. ), see Sedum telephium ssp. ruprechtii
ruprechtii Jalas (Hylotelephium maximum ssp. ), see Sedum telephium ssp. ruprechtii
ruprechtii Jalas (Hylotelephium), see Sedum telephium ssp. ruprechtii
× ruprecthiana Borbás (Viola)
ruralis (Hedw.) (Tortula)
rurivagum (Jord. ex Boreau) ( Polygonumaviculare)
rusbyi Greene (Astragalus)
Ruscaceae (Liliopsida)
rusciforme B.S.G. (Rhynchostegium), see Rhynchostegium riparioides
russeolum Fries ex Hartm. (Eriophorum)
russeolum × scheuchzeri (Eriophorum), see Eriophorum russeolum ssp. rufescens
russica Endl. (Larix), see Larix sibirica
russowii Warnst. (Sphagnum)
russowii Klinge (Dactylorhiza), see Dactylorhiza traunsteineri
rustica Piper (Castilleja)
rustica L. (Nicotiana)
rusticana P. Gaertner, B. Meyer & Scherb. (Armoracia)
Ruta L. (Rutaceae)
rutabulum (Hedw.) (Brachythecium)
Rutaceae Juss. (Magnoliopsida)
ruta-muraria L., 1753 (Asplenium)
ruta-muraria × Camptosorus Braun, 1939 (Asplenium)
ruta-muraria × trichomanes (Asplenium)
rutheana (Limpr.) (Leiocolea)
rutheana Limpr. (Lophozia), see Leiocolea rutheana
ruthei Limpr. (Plagiothecium)
ruthenica M. Bieb. (Anthemis)
ruthenica (Willd.) ( Potentillanorvegica)
ruthenica Iljin (Salsola), see Salsola tragus
ruthenica Iljin (kali ssp. ), see Salsola tragus
ruthenicum (Willd.) ( Galiumverum)
ruthenicus (Fischer ex Woloszczak) (Chamaecytisus)
ruthii Ashe (Asarum)
rutila Nutt. (Opuntia), see Opuntia polyacantha var. rufispina
rutilans Brid. (Bryum)
rutilus Wolfgang (Potamogeton)
ruwenzorensis (Cassipourea)
ruyschiana L. (Dracocephalum)
rydbergi Small ex Rydb. (Rhus radicans var. ), see Rhus radicans
rydbergii A. Nels. (Penstemon)
rydbergii Greene (Rosa), see Rosa arkansana var. arkansana
rydbergii Small ex Rydb., see Rhus radicans

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Markku Savela