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.
1,190 species · RhododendronShowing 793–816
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 | Rhododendron rimicolaName author: X.L.Tian, Y.P.Ma & J.NielsenAccepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron riparioidesName author: (Cullen) CubeyAccepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron ripenseName author: MakinoAccepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron ripleyiName author: Merr.Accepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron ririeiName author: Hemsl. & E.H.WilsonAccepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron rivulareName author: Hand.-Mazz.Accepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron robinsoniiName author: Ridl.Accepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron roseatumName author: Hutch.Accepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron roseiflorumName author: P.F.StevensAccepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron rosendahliiName author: SleumerAccepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron rothschildiiName author: DavidianAccepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron rouseiName author: Argent & MadulidAccepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron roxieanumName author: ForrestAccepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron roxieoidesName author: D.F.Chamb.Accepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron rubellumName author: SleumerAccepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron rubiginosumName author: Franch.Accepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron rubineiflorumName author: CravenAccepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron rubrobracteatumName author: SleumerAccepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron rubropilosumName author: HayataAccepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron rufescensName author: Franch.Accepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron rufohirtumName author: Hand.-Mazz.Accepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron rufosquamosumName author: Hutch.Accepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron rufumName author: BatalinAccepted species | EricaceaeRhododendron genus | No guide yet |
| No photo yet | Rhododendron rugosumName author: H.Low ex Hook.f.Accepted species | EricaceaeRhododendron 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.