Try the calculator
A WIDER WORLD OF FLOWERS

The botanical directory

From familiar garden flowers to species you have yet to meet. Explore the flowering plant tree through accepted scientific names, botanical families, and synonyms.

Accepted species
347,476
Synonym names
710,971
Botanical families
430
Genera
13,895

Find a flower. Follow its family.

Search scientific names or try a familiar florist name, like rose or peony.

Scientific names and synonyms are searchable from two characters. Familiar florist names link to their broader genus; common names are not available for every species.

14,256 species in RubiaceaeShowing 11,497–11,520

Clear filters

Photos show the identified species; cultivars and commercial forms can vary. Related genus guides cover other plants in the same group. Name authors credit the botanists behind a scientific name; “L.” stands for Carl Linnaeus. Swipe across the table to see family and guide links.

Flowering species, botanical families, photographs, and available florist guides
PhotoSpeciesFamily & genusFlower guides
No photo yetRhadinopus papuanusName author: S.MooreAccepted speciesRubiaceaeRhadinopus genusNo guide yet
No photo yetRhaphidura lowiiName author: (Ridl.) Bremek.Accepted speciesRubiaceaeRhaphidura genusNo guide yet
No photo yetRhodopentas busseiName author: (K.Krause) Kårehed & B.BremerAccepted speciesRubiaceaeRhodopentas genusNo guide yet
No photo yetRhodopentas parvifoliaName author: (Hiern) Kårehed & B.BremerAccepted speciesRubiaceaeRhodopentas genusNo guide yet
No photo yetRichardia arenicolaName author: (Britton & P.Wilson) W.H.Lewis & R.L.Oliv.Accepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia boliviensisName author: W.H.Lewis & R.L.Oliv.Accepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia brasiliensisName author: GomesAccepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia ciliataName author: (Britton & P.Wilson) W.H.Lewis & R.L.Oliv.Accepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia coldenioidesName author: RusbyAccepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia cruciataName author: RusbyAccepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia gandaraeName author: Rzed.Accepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia grandifloraName author: (Cham. & Schltdl.) Steud.Accepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia humistrataName author: (Cham. & Schltdl.) Steud.Accepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia lomensisName author: (K.Krause) Standl.Accepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia muricataName author: (Griseb.) B.L.Rob.Accepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia pectidifoliaName author: (Urb.) BorhidiAccepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia pedicellataName author: (K.Schum.) KuntzeAccepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia scabraName author: Carl Linnaeus (L.)Accepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia schumanniiName author: W.H.Lewis & R.L.Oliv.Accepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia stellarisName author: (Cham. & Schltdl.) Steud.Accepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRichardia tricoccaName author: (Torr. & A.Gray) Standl.Accepted speciesRubiaceaeRichardia genusNo guide yet
No photo yetRidsdalea albaName author: K.Khamm.Accepted speciesRubiaceaeRidsdalea genusNo guide yet
No photo yetRidsdalea anisophylloidesName author: (Wernham) J.T.PereiraAccepted speciesRubiaceaeRidsdalea genusNo guide yet
No photo yetRidsdalea attopevensisName author: (Pit.) J.T.PereiraAccepted speciesRubiaceaeRidsdalea genusNo guide yet
THE SOURCE & THE SCOPE

A living reference.
A documented starting point.

Taxonomy changes as plants are studied. This directory preserves the accepted names and synonym relationships in a specific World Flora Online release, so you can trace every entry to its source.

View the June 2026 source dataset

What is included?

All 347,476 accepted species classified under Angiosperms in this snapshot, plus 710,971 names treated as synonyms of those species. Flowering trees, grasses, and other less familiar flowering plants belong here too.

Is this every flower that has ever existed?

No complete list of every historical or undiscovered species exists. This collection excludes unresolved names, subspecies and varieties as separate records, non-flowering plants, and most cultivated forms. It is not a complete fossil or cultivar register.

Can I order these flowers?

A botanical record does not establish cut-flower availability or suitability for an arrangement. Our 1230 florist guides cover commercial flowers, specialty garden cuts, and foliage, with design notes, photos, and calculator links. Calculator selection uses that florist collection; other ingredients can be entered as custom items.

Taxonomy: World Flora Online Consortium · CC0 public domain · Published June 21, 2026. Photographs and editorial florist guides have separate credits.