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 25–48
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 mandshuricaName author: (Callier) Hand.-Mazz.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus maritimaName author: (Marshall) Muhl. ex Nutt.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus matsumuraeName author: CallierAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus maximowicziiName author: CallierAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus nepalensisName author: D.DonAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus nitidaName author: (Spach) Endl.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus oblongifoliaName author: Torr.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus orientalisName author: Decne.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus paniculataName author: NakaiAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus pendulaName author: Matsum.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus pubescensName author: TauschAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus rhombifoliaName author: Nutt.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus rohlenaeName author: Vít, Douda & MandákAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus rubraName author: Bong.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus serrulataName author: (Aiton) Willd.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus serrulatoidesName author: CallierAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus sieboldianaName author: Matsum.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus subcordataName author: C.A.Mey.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus trabeculosaName author: Hand.-Mazz.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus vermicularisName author: NakaiAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus × hanedaeName author: SuyinataAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus × hosoiiName author: Mizush.Accepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus × mayriiName author: CallierAccepted species | BetulaceaeAlnus genus | No guide yet |
| No photo yet | Alnus × peculiarisName author: HiyamaAccepted 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.