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A WIDER WORLD OF FLOWERS

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.

295 species · PenstemonShowing 1–24

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Photos 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.

Flowering species, botanical families, photographs, and available florist guides
PhotoSpeciesFamily & genusFlower guides
No photo yetPenstemon abietinusName author: PennellAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon absarokensisName author: EvertAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon acaulisName author: L.O.WilliamsAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon acuminatusName author: Douglas ex Lindl.Accepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon alamosensisName author: Pennell & NisbetAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon albertinusName author: GreeneAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon albidusName author: Nutt.Accepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon albifluvisName author: EnglandAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon albomarginatusName author: M.E.JonesAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon ambiguusName author: Torr.Accepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon ammophilusName author: N.H.Holmgren & L.M.SchultzAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon amphorellaeName author: Crosswh.Accepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon angelicusName author: (I.M.Johnst.) MoranAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon anguineusName author: Eastw.Accepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon angustifoliusName author: Nutt. ex PurshAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon arenariusName author: GreeneAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon arenicolaName author: A.NelsonAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon aridusName author: Rydb.Accepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon arkansanusName author: PennellAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon atropurpureusName author: (Sweet) G.DonAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon attenuatusName author: DouglasAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon atwoodiiName author: S.L.WelshAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon auriberbisName author: PennellAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
No photo yetPenstemon australisName author: SmallAccepted speciesPlantaginaceaePenstemon genus
Related genus guidesPenstemon Smooth Beardtongue
THE SOURCE & THE SCOPE

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 dataset

What 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.