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 12,865–12,888
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 | Spermacoce octodonName author: (Hepper) HakkiAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce ocymifoliaName author: Willd.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce ocymoidesName author: Burm.f.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce oliganthaName author: Urb.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce omissaName author: J.R.ClarksonAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce oronocensisName author: Willd.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce osteniiName author: (Standl.) E.L.Cabral & FlorentínAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce ovalifoliaName author: (M.Martens & Galeotti) Hemsl.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce paganucciiName author: E.L.Cabral & BacigalupoAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce paoliiName author: (Chiov.) Verdc.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce papuanaName author: F.Muell.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce paraensisName author: (Bacigalupo & E.L.Cabral) DelpreteAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce paranaensisName author: (E.L.Cabral & Bacigalupo) DelpreteAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce parvicepsName author: (Ridl.) I.M.TurnerAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce paucifloraName author: Vell.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce paulistaName author: (E.L.Cabral & Bacigalupo) M.H.J.van der MeerAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce pazensisName author: (E.L.Cabral & Bacigalupo) M.H.J.van der MeerAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce perangustaName author: (S.Moore) DelpreteAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce perennisName author: Verdc.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce perpusillaName author: (Hook.f.) KuntzeAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce pessimaName author: HarwoodAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce petraeaName author: (Pires-O'Brien) GovaertsAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce phaeospermaName author: HarwoodAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce phalloidesName author: HarwoodAccepted species | RubiaceaeSpermacoce 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.