Species within the Rubiaceae family:
- Aparine hispida Syn. for: Galium aparine
- Aparine vulgaris Syn. for: Galium aparine
- Belicea hoffimannioides Syn. for: Morinda citrifolia
- Bigelovia setidens Syn. for: Spermacoce setidens
- Borreria alata Syn. for: Spermacoce alata
- Borreria bartlingiana Syn. for: Spermacoce alata
- Borreria capitata Syn. for: Spermacoce capitata
- Borreria eradii Syn. for: Spermacoce alata
- Borreria fockeana Syn. for: Spermacoce alata
- Borreria latifolia Syn. for: Spermacoce alata
- Borreria leucadea Syn. for: Spermacoce stachydea
- Borreria penicillata Syn. for: Spermacoce alata
- Borreria perrottetii Syn. for: Spermacoce alata
- Borreria platyphylla Syn. for: Spermacoce alata
- Borreria scabrida Syn. for: Spermacoce alata
- Borreria setidens Syn. for: Spermacoce setidens
- Borreria sideritis Syn. for: Spermacoce alata
- Borreria splitgerheri Syn. for: Spermacoce alata
- Borreria stachydea Syn. for: Spermacoce stachydea
- Borreria tetraptera Syn. for: Spermacoce alata
- Cephaelis diversifolia Syn. for: Geophila repens
- Cephalina esculenta Syn. for: Sarcocephalus latifolius
- Chassalia curviflora
- Chassalia kolly
- Chassalia lurida Syn. for: Chassalia curviflora
- Chassalia sanguiana Syn. for: Chassalia curviflora
- Chassalia tetrandra Syn. for: Chassalia curviflora
- Chomelia angolensis Syn. for: Crossopteryx febrifuga
- Chomelia buchananii Syn. for: Crossopteryx febrifuga
- Chomelia mossambicensis Syn. for: Crossopteryx febrifuga
- Coccocypselum lanceolatum
- Coffea arabica
- Coffea bourbonica Syn. for: Coffea arabica
- Coffea bukobensis Syn. for: Coffea canephora
- Coffea canephora
- Coffea laurentii Syn. for: Coffea canephora
- Coffea maclaudii Syn. for: Coffea canephora
- Coffea moka Syn. for: Coffea arabica
- Coffea robusta Syn. for: Coffea canephora
- Coffea ugandae Syn. for: Coffea canephora
- Coffea vulgaris Syn. for: Coffea arabica
- Coffea welwitschii Syn. for: Coffea canephora
- Crossopteryx africana Syn. for: Crossopteryx febrifuga
- Crossopteryx febrifuga
- Crossopteryx kotschyana Syn. for: Crossopteryx febrifuga
- Crucianella maritima
- Crucianella purpurea Syn. for: Galium aparine
- Cruciata ciliata Syn. for: Cruciata laevipes
- Cruciata hirsuta Syn. for: Cruciata laevipes
- Cruciata laevipes
- Diodia teres Syn. for: Hexasepalum teres
- Diodia vaginalis
- Duperrea pavettifolia
- Gaertnera morindoides Syn. for: Morinda morindoides
- Galion aparinum Syn. for: Galium aparine
- Galium adhaerens Syn. for: Galium aparine
- Galium agreste Syn. for: Galium aparine
- Galium aparine
- Galium asperum Syn. for: Galium aparine
- Galium australe Syn. for: Galium aparine
- Galium capillipes Syn. for: Galium sylvaticum
- Galium charoides Syn. for: Galium aparine
- Galium chilense Syn. for: Galium aparine
- Galium chonosense Syn. for: Galium aparine
- Galium cruciata Syn. for: Cruciata laevipes
- Galium hispidum Syn. for: Galium aparine
- Galium horridum Syn. for: Galium aparine
- Galium intermedium Syn. for: Galium aparine
- Galium lappaceum Syn. for: Galium aparine
- Galium luteocruciatum Syn. for: Cruciata laevipes
- Galium nitidum Syn. for: Galium sylvaticum
- Galium odoratum
- Galium polymorphum Syn. for: Galium sylvaticum
- Galium sylvaticum
- Galium vaillantii Syn. for: Galium aparine
- Galium valantia Syn. for: Cruciata laevipes
- Galium verum
- Gardenia jasminoides
- Gardenia ternifolia
- Gardenia volkensii ssp. spathulifolia
- Gentiana scandens Syn. for: Paederia foetida
- Geophila repens
- Guagnebina ignita Syn. for: Manettia cordifolia
- Hedyotis capitellata
- Hedyotis costata
- Hexasepalum teres
- Isertia spiciformis
- Ixora bandhuca Syn. for: Ixora coccinea
- Ixora brachypoda
- Ixora coccinea
- Ixora eekhautii Syn. for: Ixora coccinea
- Ixora finlaysoniana
- Ixora fraseri Syn. for: Ixora coccinea
- Ixora grandiflora Syn. for: Ixora coccinea
- Ixora lutea Syn. for: Ixora coccinea
- Ixora montana Syn. for: Ixora coccinea
- Ixora morsei Syn. for: Ixora coccinea
- Ixora obovata Syn. for: Ixora coccinea
- Ixora pavettifolia Syn. for: Duperrea pavettifolia
- Ixora propinqua Syn. for: Ixora coccinea
- Ixora purpurea Syn. for: Ixora coccinea
- Ixora radiata Syn. for: Ixora brachypoda
- Ixora rhodesiaca Syn. for: Ixora brachypoda
- Ixora thomeana Syn. for: Ixora coccinea
- Lasianthus attenuatus
- Lasianthus balansae Syn. for: Lasianthus micranthus
- Lasianthus bordenii Syn. for: Lasianthus attenuatus
- Lasianthus micranthus
- Lasianthus microstachys Syn. for: Lasianthus micranthus
- Lasianthus octonervius Syn. for: Lasianthus micranthus
- Lasianthus seikomontanus Syn. for: Lasianthus micranthus
- Litosanthes micrantha Syn. for: Lasianthus micranthus
- Lygistum ignitum Syn. for: Manettia cordifolia
- Lygistum micans Syn. for: Manettia cordifolia
- Manettia attenuata Syn. for: Manettia cordifolia
- Manettia boliviana Syn. for: Manettia cordifolia
- Manettia cordifolia
- Manettia glabra Syn. for: Manettia cordifolia
- Manettia grandiflora Syn. for: Manettia cordifolia
- Manettia ignita Syn. for: Manettia cordifolia
- Manettia leianthiflora Syn. for: Manettia cordifolia
- Manettia micans Syn. for: Manettia cordifolia
- Manettia paranensis Syn. for: Manettia cordifolia
- Manettia stipulosa Syn. for: Manettia cordifolia
- Mephitidia balansae Syn. for: Lasianthus micranthus
- Mephitidia microstachys Syn. for: Lasianthus micranthus
- Metadina trichotoma
- Morinda angustifolia
- Morinda citrifolia
- Morinda confusa Syn. for: Morinda morindoides
- Morinda lucida
- Morinda morindoides
- Morinda squarrosa Syn. for: Morinda angustifolia
- Mussaenda elegans
- Mussaenda erythrophylla
- Mussaenda fulgens Syn. for: Mussaenda erythrophylla
- Mussaenda hispida Syn. for: Mussaenda elegans
- Mussaenda macrophylla
- Mussaenda pavettifolia Syn. for: Duperrea pavettifolia
- Mussaenda philippica
- Mussaenda splendida Syn. for: Mussaenda erythrophylla
- Mycetia gracilis
- Mycetia hirta
- Mycetia longiflora
- Nauclea esculenta Syn. for: Sarcocephalus latifolius
- Nauclea latifolia Syn. for: Sarcocephalus latifolius
- Nauclea sambucina Syn. for: Sarcocephalus latifolius
- Nonatelia micrantha Syn. for: Lasianthus micranthus
- Oldenlandia corymbosa
- Oldenlandia paridifolia
- Ophiorrhiza macrantha
- Paederia foetida
- Pavetta bandhuca Syn. for: Ixora coccinea
- Pavetta coccinea Syn. for: Ixora coccinea
- Pavetta hongkongensis
- Pavetta incarnata Syn. for: Ixora coccinea
- Pavetta rubra Syn. for: Ixora coccinea
- Pentanisia prunelloides
- Plethyrsis glauca Syn. for: Richardia scabra
- Psychotria calocarpa
- Psychotria curviflora Syn. for: Chassalia curviflora
- Psychotria henryi
- Psychotria hoffmannseggiana
- Psychotria lurida Syn. for: Chassalia curviflora
- Psychotria tetrandra Syn. for: Chassalia curviflora
- Psychotria yunnanensis
- Richardia adscendens Syn. for: Richardia brasiliensis
- Richardia brasiliensis
- Richardia divergens Syn. for: Richardia grandiflora
- Richardia emetica Syn. for: Richardia brasiliensis
- Richardia grandiflora
- Richardia rosea Syn. for: Richardia brasiliensis
- Richardia scabra
- Richardia sericea Syn. for: Richardia brasiliensis
- Richardia villosa Syn. for: Richardia brasiliensis
- Richardsonia adscendens Syn. for: Richardia brasiliensis
- Richardsonia brasiliensis Syn. for: Richardia brasiliensis
- Richardsonia emetica Syn. for: Richardia brasiliensis
- Richardsonia rosea Syn. for: Richardia brasiliensis
- Richardsonia sericea Syn. for: Richardia brasiliensis
- Rondeletia africana Syn. for: Crossopteryx febrifuga
- Rondeletia febrifuga Syn. for: Crossopteryx febrifuga
- Rondeletia tinctoria Syn. for: Wendlandia tinctoria
- Rubia anglica Syn. for: Rubia peregrina
- Rubia angustifolia Syn. for: Rubia peregrina
- Rubia aparine Syn. for: Galium aparine
- Rubia cruciata Syn. for: Cruciata laevipes
- Rubia peregrina
- Sarcocephalus esculentus Syn. for: Sarcocephalus latifolius
- Sarcocephalus latifolius
- Spermacoce alata
- Spermacoce ascendens Syn. for: Richardia brasiliensis
- Spermacoce aspera Syn. for: Spermacoce alata
- Spermacoce bartlingiana Syn. for: Spermacoce alata
- Spermacoce caerulescens Syn. for: Spermacoce alata
- Spermacoce capitata
- Spermacoce hexandra Syn. for: Richardia brasiliensis
- Spermacoce latifolia Syn. for: Spermacoce alata
- Spermacoce leucadea Syn. for: Spermacoce stachydea
- Spermacoce phyllocephala Syn. for: Spermacoce stachydea
- Spermacoce ruelliae
- Spermacoce setidens
- Spermacoce stachydea
- Tardavel latifolia Syn. for: Spermacoce alata
- Tarenna angolensis Syn. for: Crossopteryx febrifuga
- Tarenna mossambicensis Syn. for: Crossopteryx febrifuga
- Uragoga curviflora Syn. for: Chassalia curviflora
- Uragoga picta Syn. for: Psychotria calocarpa
- Valantia ciliata Syn. for: Cruciata laevipes
- Valantia crucialis Syn. for: Cruciata laevipes
- Valantia cruciata Syn. for: Cruciata laevipes
- Vanessa cordifolia Syn. for: Manettia cordifolia
- Wendlandia tinctoria
- Zwaardekronia lurida Syn. for: Chassalia curviflora
