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.
3,281 species · HieraciumShowing 1,921–1,944
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 | Hieracium obtusifronsName author: FolinAccepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium obtusissimumName author: Almq. ex OmangAccepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium obtusiusName author: Hyl.Accepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium obtusoserratumName author: OmangAccepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium obtusulumName author: Stenstr. ex Dahlst.Accepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium obversiformeName author: Johanss.Accepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium obversumName author: (Johanss.) Johanss.Accepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium ocenicumName author: MateoAccepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium ochanskienseName author: (Zahn) Üksip ex SchljakovAccepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium ochrochlorumName author: Johanss. & Sam.Accepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium ochthophilumName author: P.D.SellAccepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium ocriophyllumName author: Johanss. & Sam.Accepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium odontophyllumName author: Freyn & Sint.Accepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium oenophyllumName author: P.D.SellAccepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium oestmaniiName author: T.TylerAccepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium offerdalenseName author: Johanss.Accepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium offulgensName author: Johanss. & Sam.Accepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium ohlseniiName author: Hyl.Accepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium oinopolepisName author: (Malme ex Dahlst.) Dahlst.Accepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium oioenseName author: (Dahlst.) ÜksipAccepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium oistophyllumName author: PugsleyAccepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium olafiiName author: Ósk.Accepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium oleaginicolorName author: (Zahn) ZahnAccepted species | AsteraceaeHieracium genus | No guide yet |
| No photo yet | Hieracium oleosumName author: (Dahlst. ex Zahn) Dahlst.Accepted species | AsteraceaeHieracium 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.