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.
2,240 species in CactaceaeShowing 2,209–2,232
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 | × Haagespostoa climaxanthaName author: (Werderm.) G.D.RowleyAccepted species | Cactaceae× Haagespostoa genus | No guide yet |
| No photo yet | × Haagespostoa villigeraName author: (Rauh & Backeb.) OstolazaAccepted species | Cactaceae× Haagespostoa genus | No guide yet |
| No photo yet | × Harrisinopsis jusbertiiName author: (K.Schum.) P.V.HeathAccepted species | Cactaceae× Harrisinopsis genus | No guide yet |
| No photo yet | × Heliochia hybridaName author: (Van Geel) P.V.HeathAccepted species | Cactaceae× Heliochia genus | No guide yet |
| No photo yet | × Heliochia jenkinsoniiName author: (McIntosh) P.V.HeathAccepted species | Cactaceae× Heliochia genus | No guide yet |
| No photo yet | × Heliochia vandesiiName author: G.D.RowleyAccepted species | Cactaceae× Heliochia genus | No guide yet |
| No photo yet | × Heliorhipsalis macdougalliiName author: DoweldAccepted species | Cactaceae× Heliorhipsalis genus | No guide yet |
| No photo yet | × Helioselenius fulgidusName author: (Hook.f.) HoevelAccepted species | Cactaceae× Helioselenius genus | No guide yet |
| No photo yet | × Helioselenius maynardaeName author: (Paxton) G.D.RowleyAccepted species | Cactaceae× Helioselenius genus | No guide yet |
| No photo yet | × Heliphyllum amaranthinumName author: (Regel) DoweldAccepted species | Cactaceae× Heliphyllum genus | No guide yet |
| No photo yet | × Heliphyllum charltoniiName author: G.D.RowleyAccepted species | Cactaceae× Heliphyllum genus | No guide yet |
| No photo yet | × Heliphyllum splendensName author: (Regel) DoweldAccepted species | Cactaceae× Heliphyllum genus | No guide yet |
| No photo yet | × Isillocactus glassiiName author: (P.V.Heath) M.H.J.van der MeerAccepted species | Cactaceae× Isillocactus genus | No guide yet |
| No photo yet | × Myrtgerocactus lindsayiName author: MoranAccepted species | Cactaceae× Myrtgerocactus genus | No guide yet |
| No photo yet | × Opulea acaulisName author: (Ekman & Werderm.) Y.Encarn. & MajureAccepted species | Cactaceae× Opulea genus | No guide yet |
| No photo yet | × Opulea bahamanaName author: (Britton & Rose) M.H.J.van der MeerAccepted species | Cactaceae× Opulea genus | No guide yet |
| No photo yet | × Opulea lucayanaName author: (Britton) M.H.J.van der MeerAccepted species | Cactaceae× Opulea genus | No guide yet |
| No photo yet | × Opulea urbanianaName author: (Werderm.) Y.Encarn. & MajureAccepted species | Cactaceae× Opulea genus | No guide yet |
| No photo yet | × Pachebergia apicicostataName author: S.Arias & TerrazasAccepted species | Cactaceae× Pachebergia genus | No guide yet |
| No photo yet | × Pacherocactus orcuttiiName author: (K.Brandegee) G.D.RowleyAccepted species | Cactaceae× Pacherocactus genus | No guide yet |
| No photo yet | × Phyllocereus cinnabarinusName author: (Eichlam) KnebelAccepted species | Cactaceae× Phyllocereus genus | No guide yet |
| No photo yet | × Polascontria huajuapensisName author: Y.Cruz & S.VázquezAccepted species | Cactaceae× Polascontria genus | No guide yet |
| No photo yet | × Rathbunillocactus glassiiName author: P.V.HeathAccepted species | Cactaceae× Rathbunillocactus genus | No guide yet |
| No photo yet | × Seleliocereus colvilliiName author: (Sweet) P.V.HeathAccepted species | Cactaceae× Seleliocereus 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.