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.

387 species with guidesShowing 169192

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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. Swipe across the table to see family and guide links.

Flowering species, botanical families, photographs, and available florist guides
PhotoSpeciesFamily & genusFlower guides
Christmas Rose — botanical reference

Photo Credit: Robert Hundsdorfer · CC BY-SA 2.0 de

Helleborus nigerL.Accepted speciesRanunculaceaeHelleborus genusChristmas Rose guide
Related genus guideHellebore
Crimson Flag Lily — botanical reference

Photo Credit: JJ Harrison ( https://www.jjharrison.com.au/ ) · CC BY-SA 3.0

Hesperantha coccinea(Backh. & Harv.) Goldblatt & J.C.ManningAccepted speciesIridaceaeHesperantha genusCrimson Flag Lily guide
Clusters of pink, 4-petaled flowers.

Photo Credit: James St. John · CC BY 2.0

Hesperis matronalisL.Accepted speciesBrassicaceaeHesperis genusDame's Rocket guide
Tuft of scalloped, variegated leaves emerging between rocks.

Photo Credit: Behnke Nurseries, Inc. · CC BY 4.0

Heuchera americanaL.Accepted speciesSaxifragaceaeHeuchera genusAmerican Alumroot guide
Hosta plantaginea

Photo Credit: Marcia Boyle · CC BY 4.0

Hosta plantaginea(Lam.) Asch.Accepted speciesAsparagaceaeHosta genusFragrant Plantain Lily guide
Blue Flowers

Photo Credit: Peter Mansfeld · CC BY 3.0

Hyacinthoides hispanica(Mill.) Rothm.Accepted speciesAsparagaceaeHyacinthoides genusSpanish Bluebell guide
Hyacinth — botanical reference

Photo Credit: Plantman · CC BY-SA 4.0

Hyacinthus orientalisL.Accepted speciesAsparagaceaeHyacinthus genusHyacinth guide
'Lady in Blue' flowers

Photo Credit: Wouter Hagens · CC BY-SA 3.0

Hydrangea febrifuga(Lour.) Y.De Smet & GranadosAccepted speciesHydrangeaceaeHydrangea genusBlue Evergreen Hydrangea guide
Schizophragma hydrangeoides flower and bracts summer

Photo Credit: Kathleen Moore · CC BY 2.0

Hydrangea hydrangeoides(Siebold & Zucc.) Bernd SchulzAccepted speciesHydrangeaceaeHydrangea genusJapanese Hydrangea Vine guide
Hydrangea — botanical reference

Photo Credit: belvedere04 · CC BY 4.0

Hydrangea macrophylla(Thunb.) Ser.Accepted speciesHydrangeaceaeHydrangea genusHydrangea guide
Flat-topped, lace-cap cluster of white flowers.

Photo Credit: Ann Hamze · CC BY 4.0

Hydrangea petiolarisSiebold & Zucc.Accepted speciesHydrangeaceaeHydrangea genusClimbing Hydrangea guide
flower and leaves, spring, Warren County, NC

Photo Credit: Cathy Dewitt · CC BY 4.0

Hydrangea quercifoliaW.BartramAccepted speciesHydrangeaceaeHydrangea genusOakleaf Hydrangea guide
Sedum — botanical reference

Photo Credit: André Karwath aka Aka · CC BY-SA 2.5

Hylotelephium spectabile(Boreau) H.OhbaAccepted speciesCrassulaceaeHylotelephium genusSedum guide
Related genus guideOrpine
Flowers

Photo Credit: Daniel J. Layton · CC BY-SA 3.0

Hylotelephium telephium(L.) H.OhbaAccepted speciesCrassulaceaeHylotelephium genusOrpine guide
Related genus guideSedum
Hypericum kalmianum

Photo Credit: Superior National Forest · CC BY 2.0

Hypericum kalmianumL.Accepted speciesHypericaceaeHypericum genusKalm's St. John's Wort guide
Form of the shrub with yellow flowers

Photo Credit: Cathy Dewitt · CC BY 4.0

Hypericum olympicumL.Accepted speciesHypericaceaeHypericum genusOlympic St. John's Wort guide
No photo yetHypericum × inodorumMill.Accepted speciesHypericaceaeHypericum genusHypericum guide
Hyssop — botanical reference

Photo Credit: User:Topjabot · Public domain

Hyssopus officinalisL.Accepted speciesLamiaceaeHyssopus genusHyssop guide
Omphalodes linifolia

Photo Credit: Yoko Nekonomania · CC BY 2.0

Iberodes linifolia(L.) M.Serrano, R.Carbajal & S.OrtizAccepted speciesBoraginaceaeIberodes genusVenus's Navelwort guide
Holly — botanical reference

Photo Credit: Jürgen Howaldt · CC BY-SA 2.0 de

Ilex aquifoliumL.Accepted speciesAquifoliaceaeIlex genusHolly guide
Related genus guideWinterberry
Winterberry — botanical reference

Photo Credit: User:SB_Johnny · CC BY-SA 3.0

Ilex verticillata(L.) A.GrayAccepted speciesAquifoliaceaeIlex genusWinterberry guide
Related genus guideHolly
Flowers

Photo Credit: David J. Stang · CC BY-SA 4.0

Ionactis linariifolia(L.) GreeneAccepted speciesAsteraceaeIonactis genusStiff Aster guide
Flowers

Photo Credit: Yercaud-elango · CC BY-SA 4.0

Iris domestica(L.) Goldblatt & Mabb.Accepted speciesIridaceaeIris genusBlackberry Lily guide
Iris ensata 'Anytus' flower in summer in Moore County

Photo Credit: Susan Strine · CC BY 2.0

Iris ensataThunb.Accepted speciesIridaceaeIris genusJapanese Water Iris guide
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 480 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.