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 7,345–7,368
Clear filtersPhotos 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.
| Photo | Species | Family & genus | Flower guides |
|---|---|---|---|
| No photo yet | Oldenlandia violaceaName author: K.Schum.Accepted species | RubiaceaeOldenlandia genus | No guide yet |
| No photo yet | Oldenlandia viscidaName author: (Bedd.) KuntzeAccepted species | RubiaceaeOldenlandia genus | No guide yet |
| No photo yet | Oldenlandia wauensisName author: Schweinf. ex HiernAccepted species | RubiaceaeOldenlandia genus | No guide yet |
| No photo yet | Oldenlandia wiedemanniiName author: K.Schum.Accepted species | RubiaceaeOldenlandia genus | No guide yet |
| No photo yet | Oldenlandia willdenowianaName author: Schult. & Schult.f.Accepted species | RubiaceaeOldenlandia genus | No guide yet |
| No photo yet | Oldenlandia xanthochroaName author: (Hance) KuntzeAccepted species | RubiaceaeOldenlandia genus | No guide yet |
| No photo yet | Oldenlandia yunnanensisName author: (H.Lév.) ChunAccepted species | RubiaceaeOldenlandia genus | No guide yet |
| No photo yet | Oldenlandiopsis callitrichoidesName author: (Griseb.) Terrell & W.H.LewisAccepted species | RubiaceaeOldenlandiopsis genus | No guide yet |
| No photo yet | Oligocodon cunliffeaeName author: (Wernham) KeayAccepted species | RubiaceaeOligocodon genus | No guide yet |
| No photo yet | Omiltemia guerrerensisName author: Lozada-Pérez & J.RojasAccepted species | RubiaceaeOmiltemia genus | No guide yet |
| No photo yet | Omiltemia longipesName author: Standl.Accepted species | RubiaceaeOmiltemia genus | No guide yet |
| No photo yet | Omiltemia parvifoliaName author: Borhidi & K.VelascoAccepted species | RubiaceaeOmiltemia genus | No guide yet |
| No photo yet | Opercularia acolytanthaName author: DielsAccepted species | RubiaceaeOpercularia genus | No guide yet |
| No photo yet | Opercularia apicifloraName author: Labill. ex Juss.Accepted species | RubiaceaeOpercularia genus | No guide yet |
| No photo yet | Opercularia asperaName author: Gaertn.Accepted species | RubiaceaeOpercularia genus | No guide yet |
| No photo yet | Opercularia diphyllaName author: Gaertn.Accepted species | RubiaceaeOpercularia genus | No guide yet |
| No photo yet | Opercularia echinocephalaName author: Benth.Accepted species | RubiaceaeOpercularia genus | No guide yet |
| No photo yet | Opercularia hirsutaName author: F.Muell. ex Benth.Accepted species | RubiaceaeOpercularia genus | No guide yet |
| No photo yet | Opercularia hispidaName author: Spreng.Accepted species | RubiaceaeOpercularia genus | No guide yet |
| No photo yet | Opercularia hispidulaName author: Endl.Accepted species | RubiaceaeOpercularia genus | No guide yet |
| No photo yet | Opercularia loganioidesName author: KeigheryAccepted species | RubiaceaeOpercularia genus | No guide yet |
| No photo yet | Opercularia nubicolaName author: A.S.MarkeyAccepted species | RubiaceaeOpercularia genus | No guide yet |
| No photo yet | Opercularia ovataName author: Hook.f.Accepted species | RubiaceaeOpercularia genus | No guide yet |
| No photo yet | Opercularia scabridaName author: Schltdl.Accepted species | RubiaceaeOpercularia genus | No guide yet |
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 datasetWhat 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.