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.
88 species · RubiaShowing 49–72
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 | Rubia maymanensisName author: Ehrend. & Schönb.-Tem.Accepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia membranaceaName author: DielsAccepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia occidensName author: Capelo, M.Seq. & H.Schaef.Accepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia oncotrichaName author: Hand.-Mazz.Accepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia oppositifoliaName author: Griff.Accepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia ovatifoliaName author: Z.Ying ZhangAccepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia pallidaName author: DielsAccepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia paucifloraName author: Boiss.Accepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia pavloviiName author: Bajtenov & Myrz.Accepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia peregrinaName author: Carl Linnaeus (L.)Accepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia petiolarisName author: DC.Accepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia philippinensisName author: ElmerAccepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia pianmaensisName author: R.Li & H.LiAccepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia podanthaName author: DielsAccepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia polyphlebiaName author: H.S.LoAccepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia pseudogaliumName author: Ehrend.Accepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia pterygocaulisName author: H.S.LoAccepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia rechingeriName author: Ehrend.Accepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia regeliiName author: Pojark.Accepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia rezniczenkoanaName author: Litv.Accepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia rigidifoliaName author: Pojark.Accepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia rotundifoliaName author: Banks & Sol.Accepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia salicifoliaName author: H.S.LoAccepted species | RubiaceaeRubia genus | No guide yet |
| No photo yet | Rubia schugnanicaName author: B.Fedtsch. ex Pojark.Accepted species | RubiaceaeRubia 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.