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.
49 species · AlnusShowing 1–24
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 | Alnus acuminataName author: KunthAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus alnobetulaName author: (Ehrh.) K.KochAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus betulifoliaName author: G.Y.Li, Z.H.Chen & D.D.MaAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus cordataName author: (Loisel.) DubyAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus cremastogyneName author: BurkillAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus djavanshiriiName author: H.ZareAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus dolichocarpaName author: H.Zare, Amini & AssadiAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus ellipticaName author: Req.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus fallacinaName author: CallierAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus faurieiName author: H.Lév. & VaniotAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus ferdinandi-coburgiiName author: C.K.Schneid.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus firmaName author: Siebold & Zucc.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus formosanaName author: (Burkill) MakinoAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus glutinosaName author: (L.) Gaertn.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus glutipesName author: (Jarm. ex Czerpek) Vorosch.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus hakkodensisName author: HayashiAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus henryiName author: C.K.Schneid.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus hirsutaName author: (Spach) Rupr.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus incanaName author: (L.) MoenchAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus japonicaName author: (Thunb.) Steud.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus jorullensisName author: KunthAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus lanataName author: Duthie ex BeanAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus lusitanicaName author: Vít, Douda & MandákAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus maireiName author: H.Lév.Accepted species | BetulaceaeAlnus 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.