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.
5,597 species in AcanthaceaeShowing 2,737–2,760
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 | Justicia oncodesName author: (Lindau) Wassh. & C.EzcurraAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia oppositifloraName author: R.Villanueva & J.R.I.WoodAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia oranensisName author: N.De Marco & Ter.RuizAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia orbicularisName author: (Lindau) V.A.W.GrahamAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia orchioidesName author: L.f.Accepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia oreadicaName author: Sartin & KameyamaAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia oreadumName author: S.MooreAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia oreophilaName author: C.B.ClarkeAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia oreopolaName author: LeonardAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia ornatopilaName author: EnsermuAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia ornithopodaName author: BenoistAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia orosiensisName author: DurkeeAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia otophoraName author: C.B.ClarkeAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia ovalisName author: Ridl.Accepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia oxapampensisName author: R.Villanueva & J.R.I.WoodAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia oxypagesName author: LeonardAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia pacificaName author: (Oerst.) Hemsl.Accepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia palaciosiiName author: Wassh.Accepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia pallidaName author: J.B.ImlayAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia palmeriName author: RoseAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia pampolystachysName author: LeonardAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia panamenseName author: DurkeeAccepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia panarensisName author: Wassh.Accepted species | AcanthaceaeJusticia genus | No guide yet |
| No photo yet | Justicia panduriformisName author: BenoistAccepted species | AcanthaceaeJusticia 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.