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.
581 species · HoyaShowing 361–384
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 | Hoya oblanceolataName author: Hook.f.Accepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya oblongacutifoliaName author: CostantinAccepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya obovataName author: Decne.Accepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya obscuraName author: Elmer ex C.M.BurtonAccepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya obtusifoliaName author: WightAccepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya occultataName author: S.Rahayu & RoddaAccepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya odetteaeName author: Kloppenb.Accepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya odorataName author: Schltr.Accepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya ofuensisName author: Kloppenb.Accepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya oleoidesName author: Schltr.Accepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya oliganthaName author: Schltr.Accepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya olosegaensisName author: Kloppenb.Accepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya omloriiName author: (Livsh. & Meve) L.Wanntorp & MeveAccepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya onychoidesName author: P.I.Forst., Liddle & I.M.LiddleAccepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya oreogenaName author: KerrAccepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya oreostemmaName author: Schltr.Accepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya orientalisName author: P.T.LiAccepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya ormocensisName author: Kloppenb.Accepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya ottolanderiName author: Koord.Accepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya ovalifoliaName author: Wight & Arn.Accepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya oxycoccoidesName author: S.MooreAccepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya pachyphyllaName author: K.Schum. & Lauterb.Accepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya pachypusName author: S.MooreAccepted species | ApocynaceaeHoya genus | No guide yet |
| No photo yet | Hoya palawanensisName author: Kloppenb.Accepted species | ApocynaceaeHoya 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 980 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.