Families (As per The Plant List)

 
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

R

Ranunculaceae - 9 ( Clematis gouriana, Clematis roylei, Clematis smilacifolia, Clematis wightiana, Naravelia zeylanica, Ranunculus pensylvanicus, Ranunculus sceleratus, Thalictrum foliolosum, Thalictrum javanicum)

Rhamnaceae - 25 ( Gouania leptostachya, Helinus lanceolatus, Maesopsis eminii, Rhamnus nepalensis, Rhamnus virgata, Sageretia filiformis, Scutia circumscissa, Scutia myrtina, Scutia myrtina var. emarginata, Ventilago denticulata, Ventilago gamblei, Ventilago goughii, Ventilago madraspatana, Ziziphus abyssinica, Ziziphus funiculosa, Ziziphus glaberrima, Ziziphus glabrata, Ziziphus horrida, Ziziphus incurva, Ziziphus mauritiana var. fruticosa, Ziziphus mauritiana var. mauritiana, Ziziphus nummularia, Ziziphus oenoplia, Ziziphus rugosa, Ziziphus xylopyrus)

Rhizophoraceae - 2 ( Carallia brachiata, Carallia lucida)

Rosaceae - 11 ( Eriobotrya japonica, Prunus cerasoides, Prunus ceylanica, Prunus jenkinsii, Prunus persica, Prunus pygeoides, Pyrus communis, Rosa clinophylla, Rubus ellipticus, Rubus gardnerianus, Rubus niveus)

Rubiaceae - 141 ( Anthocephalus chinensis, Argostemma sarmentosum, Argostemma verticillatum, Benkara malabarica, Borreria ocymoides, Borreria pusilla, Borreria stricta, Canthium dicoccum var. dicoccum, Canthium dicoccum var. umbellatum, Canthium glabrum, Canthium parviflorum, Canthium rheedei, Catunaregam tomentosa, Catunaregam torulosa, Chassalia ophioxyloides, Cinchona officinalis, Cinchona succirubra, Coffea arabica, Coffea bengalensis, Dentella repens, Dentella repens var. serpyllifolia, Diplospora singularis, Fagerlindia fasciculata, Galium asperifolium, Gardenia gummifera, Gardenia jasminoides, Gardenia latifolia, Gardenia resinifera, Gardenia turgida, Geophila repens, Guettarda speciosa, Haldina cordifolia, Hamelia patens, Hedyotis affinis, Hedyotis aspera, Hedyotis auricularia, Hedyotis biflora, Hedyotis brachiata, Hedyotis caerulea, Hedyotis corymbosa, Hedyotis diffusa, Hedyotis gracilis, Hedyotis herbacea, Hedyotis nitida, Hedyotis ovatifolia, Hedyotis pinifolia, Hedyotis puberula, Hedyotis pumila, Hedyotis swertioides, Hedyotis trinervia, Hedyotis verticillata, Hedyotis vestita, Hymenodictyon obovatum, Hymenodictyon orixense, Hyptianthera stricta, Ixora arborea, Ixora brachiata, Ixora coccinea, Ixora finlaysoniana, Ixora nigricans, Ixora notoniana, Ixora polyantha, Ixora undulata, Knoxia mollis, Knoxia roxburghii, Knoxia wightiana, Lasianthus truncatus, Meyna laxiflora, Meyna spinosa, Meyna spinosa var. pubescens, Mitracarpus villosus, Mitragyna parvifolia, Morinda angustifolia, Morinda citrifolia, Morinda pubescens, Morinda pubescens var. stenophylla, Morinda tinctoria, Morinda umbellata, Mussaenda hirsutissima, Mussaenda incana, Mussaenda roxburghii, Mussaenda tomentosa, Neanotis calycina, Neanotis indica var. deltoidea, Neanotis montholonii, Neanotis tubulosa, Neolamarckia cadamba, Neonauclea purpurea, Oldenlandia stricta, Ophiorrhiza chandrasekharanii, Ophiorrhiza fasciculata, Ophiorrhiza hirsutula, Ophiorrhiza mungos, Ophiorrhiza rugosa var. prostata, Ophiorrhiza trichocarpos, Oxyceros rugulosus, Paederia foetida, Pavetta breviflora, Pavetta crassicaulis, Pavetta hispidula, Pavetta indica, Pavetta indica var. montana, Pavetta madrassica, Pavetta tomentosa, Psilanthus wightianus, Psychotria adenophylla, Psychotria congesta, Psychotria denticulata, Psychotria elongata, Psychotria flavida, Psychotria monticola, Psychotria octosulcata, Psychotria subintegra, Psydrax ficiformis, Randia brandisii, Randia candolleana, Randia longispina, Randia rugulosa var. speciosa, Randia spinosa, Randia uliginosa, Richardia scabra, Rondeletia odorata, Rubia cordifolia, Spermacoce articularis, Spermacoce assurgens, Spermacoce hispida, Spermacoce latifolia, Spermacoce ramanii, Spermadictyon suaveolens, Tarenna asiatica, Thecagonum pteritum, Uncaria sessilifructus, Wendlandia angustifolia, Wendlandia bicuspidata, Wendlandia coriacea, Wendlandia gamblei, Wendlandia glabrata, Wendlandia heynei, Wendlandia thyrsoidea, Wendlandia tinctoria subsp. orientalis, Wendlandia tinctoria subsp. tinctoria)

Rutaceae - 40 ( Acronychia pedunculata, Aegle marmelos, Atalantia monophylla, Atalantia racemosa, Chloroxylon swietenia, Citrus aurantiifolia, Citrus aurantium, Citrus grandis, Citrus limon, Citrus medica, Citrus reticulata, Citrus sinensis, Clausena anisata, Clausena austroindica, Clausena excavata, Clausena heptaphylla, Euodia lunu-akenda, Glycosmis mauritiana, Glycosmis pentaphylla, Limonia acidissima, Micromelum integerrimum, Micromelum minutum, Micromelum pubescens, Murraya koenigii, Murraya paniculata, Naringi alata, Naringi crenulata, Pamburus missionis, Paramignya beddomei, Paramignya monophylla, Paramignya scandens, Pleiospermium alatum, Tetradium glabrifolium, Toddalia asiatica, Toddalia asiatica var. floribunda, Toddalia asiatica var. gracilis, Zanthoxylum armatum, Zanthoxylum ovalifolium, Zanthoxylum rhetsa, Zanthoxylum tetraspermum)