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 12,769–12,792
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 erosaName author: HarwoodAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce eryngioidesName author: (Cham. & Schltdl.) KuntzeAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce erythrosepalaName author: HarwoodAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce eveniaName author: (Standl.) GovaertsAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce everistianaName author: FosbergAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce exasperataName author: Urb.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce exilisName author: (L.O.Williams) C.D.Adams ex W.C.Burger & C.M.TaylorAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce fabiformisName author: HarwoodAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce felis-insulaeName author: (Correll) R.A.HowardAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce filifoliaName author: (Schumach. & Thonn.) J.-P.Lebrun & StorkAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce filiformisName author: HiernAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce filitubaName author: (K.Schum.) Verdc.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce flagelliformisName author: Poir.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce fruticosaName author: (Standl.) GovaertsAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce galeopsidisName author: DC.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce garuensisName author: (K.Krause) GovaertsAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce gibbaName author: HarwoodAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce gilliesiaeName author: (Specht) J.R.ClarksonAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce glabraName author: Michx.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce gracillimaName author: (DC.) DelpreteAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce graniticolaName author: HarwoodAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce guimaraesensisName author: (E.L.Cabral & Bacigalupo) M.H.J.van der MeerAccepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce hepperianaName author: Verdc.Accepted species | RubiaceaeSpermacoce genus | No guide yet |
| No photo yet | Spermacoce heteromorphaName author: DesseinAccepted 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.