Plant species are grouped by botanists into "families", based on various characteristics, usually flower structure. Families consist of plants that are closely related botanically.
Another way this website groups species is by "Group" - species that look alike somehow, but are not necessarily related to each other. In some cases, a Group of species may overlap a Family, in other cases, not.
Only families that have species on this site are listed.

List families by COMMON NAME OR by SCIENTIFIC NAME

Family Common Names

Family ()
Acanthus Family (Acanthaceae)
Agave Family (Agavaceae)
Aloe Family (Xanthorrhoeaceae)
Amaranth Family (Amaranthaceae)
Amaryllis Family (Amaryllidaceae)
Arrow-grass Family (Juncaginaceae)
Arum Family (Araceae)
Asparagus Family (Asparagaceae)
Barberry Family (Berberidaceae)
Bedstraw Family (Rubiaceae)
Bellflower Family (Campanulaceae)
Bignonia Family (Bignoniaceae)
Bindweed Family (Convolvulaceae)
Birthwort Family (Aristolochiaceae)
Bittersweet Family (Celastraceae)
Bladderwort Family (Lentibulariaceae)
Borage Family (Boraginaceae)
Broom-rape Family (Orobanchaceae)
Buckbean Family (Menyanthaceae)
Buckthorn Family (Rhamnaceae)
Bunch flower Family (Melanthiaceae)
Bur-reed Family (Sparganiaceae)
Bush Honeysuckle Family (Diervillaceae)
Buttercup Family (Ranunculaceae)
Cactus Family (Cactaceae)
Caper Family (Capparaceae)
Carpetweed Family (Molluginaceae)
Cashew Family (Anacardiaceae)
Catbrier Family (Smilacaceae)
Cattail Family (Typhaceae)
Cleome Family (Cleomaceae)
Colchicum Family (Colchicaceae)
Composite Family (Asteraceae)
Crowberry Family (Empetraceae)
Day-lily Family (Hemerocallidaceae)
Dogbane Family (Apocynaceae)
Dogwood Family (Cornaceae)
Duckweed Family (Lemnaceae)
Evening-primrose Family (Onagraceae)
False Mermaid Family (Limnanthaceae)
Figwort Family (Scrophulariaceae)
Flax Family (Linaceae)
Flowering-rush Family (Butomaceae)
Four-O'Clock Family (Nyctaginaceae)
Frog's-bit Family (Hydrocharitaceae)
Fumitory Family (Fumariaceae)
Gentian Family (Gentianaceae)
Geranium Family (Geraniaceae)
Ginseng Family (Araliaceae)
Goosefoot Family (Chenopodiaceae)
Gourd Family (Cucurbitaceae)
Grape Family (Vitaceae)
Grass-of-Parnassus Family (Parnassiaceae)
Heath Family (Ericaceae)
Hemp Family (Cannabaceae)
Honeysuckle Family (Caprifoliaceae)
Hornwort Family (Ceratophyllaceae)
Hyacinth Family (Hyacinthaceae)
Hypoxis Family (Hypoxidaceae)
Indian-pipe Family (Monotropaceae)
Iris Family (Iridaceae)
Leadwort Family (Plumbaginaceae)
Legume Family (Fabaceae)
Lily Family (Liliaceae)
Lily-of-the-Valley Family (Convallariaceae)
Lizard's-tail Family (Saururaceae)
Lobelia Family (Lobeliaceae)
Loosestrife Family (Lythraceae)
Lopseed Family (Phrymaceae)
Mallow Family (Malvaceae)
Meadow-beauty Family (Melastomataceae)
Mignonette Family (Resedaceae)
Milkweed Family (Asclepiadaceae)
Milkwort Family (Polygalaceae)
Mint Family (Lamiaceae)
Mistletoe Family (Viscaceae)
Montia Family (Montiaceae)
Moonseed Family (Menispermaceae)
Mustard Family (Brassicaceae)
Nettle Family (Urticaceae)
Nightshade Family (Solanaceae)
Onion Family (Alliaceae)
Orchid Family (Orchidaceae)
Parsley Family (Apiaceae)
Phlox Family (Polemoniaceae)
Pickerelweed Family (Pontederiaceae)
Pink Family (Caryophyllaceae)
Pipewort Family (Eriocaulaceae)
Pitcher-plant Family (Sarraceniaceae)
Plantain Family (Plantaginaceae)
Pokeweed Family (Phytolaccaceae)
Pondweed Family (Potamogetonaceae)
Poppy Family (Papaveraceae)
Primrose Family (Primulaceae)
Purslane Family (Portulacaceae)
Pyrola Family (Pyrolaceae)
Rock Rose Family (Cistaceae)
Rose Family (Rosaceae)
Sandalwood Family (Santalaceae)
Saxifrage Family (Saxifragaceae)
Scheuchzeria Family (Scheuchzeriaceae)
Smartweed Family (Polygonaceae)
Spiderwort Family (Commelinaceae)
Spurge Family (Euphorbiaceae)
St. Johnswort Family (Hypericaceae)
Stonecrop Family (Crassulaceae)
Sundew Family (Droseraceae)
Sweet-flag Family (Acoraceae)
Teasel Family (Dipsacaceae)
Theophrasta Family (Theophrastaceae)
Touch-me-not Family (Balsaminaceae)
Trillium Family (Trilliaceae)
Twinflower Family (Linnaeaceae)
Valerian Family (Valerianaceae)
Vervain Family (Verbenaceae)
Violet Family (Violaceae)
Water Milfoil Family (Haloragaceae)
Water Nymph Family (Najadaceae)
Water Starwort Family (Callitrichaceae)
Water-Lily Family (Nymphaeaceae)
Water-plantain Family (Alismataceae)
Water-shield Family (Cabombaceae)
Waterleaf Family (Hydrophyllaceae)
Wood-sorrel Family (Oxalidaceae)
Yam Family (Dioscoreaceae)
Yellow Loosestrife Family (Myrsinaceae)
Yellow-eyed Grass Family (Xyridaceae)

Family Scientific Names

( Family)
Acanthaceae (Acanthus Family)
Acoraceae (Sweet-flag Family)
Agavaceae (Agave Family)
Alismataceae (Water-plantain Family)
Alliaceae (Onion Family)
Amaranthaceae (Amaranth Family)
Amaryllidaceae (Amaryllis Family)
Anacardiaceae (Cashew Family)
Apiaceae (Parsley Family)
Apocynaceae (Dogbane Family)
Araceae (Arum Family)
Araliaceae (Ginseng Family)
Aristolochiaceae (Birthwort Family)
Asclepiadaceae (Milkweed Family)
Asparagaceae (Asparagus Family)
Asteraceae (Composite Family)
Balsaminaceae (Touch-me-not Family)
Berberidaceae (Barberry Family)
Bignoniaceae (Bignonia Family)
Boraginaceae (Borage Family)
Brassicaceae (Mustard Family)
Butomaceae (Flowering-rush Family)
Cabombaceae (Water-shield Family)
Cactaceae (Cactus Family)
Callitrichaceae (Water Starwort Family)
Campanulaceae (Bellflower Family)
Cannabaceae (Hemp Family)
Capparaceae (Caper Family)
Caprifoliaceae (Honeysuckle Family)
Caryophyllaceae (Pink Family)
Celastraceae (Bittersweet Family)
Ceratophyllaceae (Hornwort Family)
Chenopodiaceae (Goosefoot Family)
Cistaceae (Rock Rose Family)
Cleomaceae (Cleome Family)
Colchicaceae (Colchicum Family)
Commelinaceae (Spiderwort Family)
Convallariaceae (Lily-of-the-Valley Family)
Convolvulaceae (Bindweed Family)
Cornaceae (Dogwood Family)
Crassulaceae (Stonecrop Family)
Cucurbitaceae (Gourd Family)
Diervillaceae (Bush Honeysuckle Family)
Dioscoreaceae (Yam Family)
Dipsacaceae (Teasel Family)
Droseraceae (Sundew Family)
Empetraceae (Crowberry Family)
Ericaceae (Heath Family)
Eriocaulaceae (Pipewort Family)
Euphorbiaceae (Spurge Family)
Fabaceae (Legume Family)
Fumariaceae (Fumitory Family)
Gentianaceae (Gentian Family)
Geraniaceae (Geranium Family)
Haloragaceae (Water Milfoil Family)
Hemerocallidaceae (Day-lily Family)
Hyacinthaceae (Hyacinth Family)
Hydrocharitaceae (Frog's-bit Family)
Hydrophyllaceae (Waterleaf Family)
Hypericaceae (St. Johnswort Family)
Hypoxidaceae (Hypoxis Family)
Iridaceae (Iris Family)
Juncaginaceae (Arrow-grass Family)
Lamiaceae (Mint Family)
Lemnaceae (Duckweed Family)
Lentibulariaceae (Bladderwort Family)
Liliaceae (Lily Family)
Limnanthaceae (False Mermaid Family)
Linaceae (Flax Family)
Linnaeaceae (Twinflower Family)
Lobeliaceae (Lobelia Family)
Lythraceae (Loosestrife Family)
Malvaceae (Mallow Family)
Melanthiaceae (Bunch flower Family)
Melastomataceae (Meadow-beauty Family)
Menispermaceae (Moonseed Family)
Menyanthaceae (Buckbean Family)
Molluginaceae (Carpetweed Family)
Monotropaceae (Indian-pipe Family)
Montiaceae (Montia Family)
Myrsinaceae (Yellow Loosestrife Family)
Najadaceae (Water Nymph Family)
Nyctaginaceae (Four-O'Clock Family)
Nymphaeaceae (Water-Lily Family)
Onagraceae (Evening-primrose Family)
Orchidaceae (Orchid Family)
Orobanchaceae (Broom-rape Family)
Oxalidaceae (Wood-sorrel Family)
Papaveraceae (Poppy Family)
Parnassiaceae (Grass-of-Parnassus Family)
Phrymaceae (Lopseed Family)
Phytolaccaceae (Pokeweed Family)
Plantaginaceae (Plantain Family)
Plumbaginaceae (Leadwort Family)
Polemoniaceae (Phlox Family)
Polygalaceae (Milkwort Family)
Polygonaceae (Smartweed Family)
Pontederiaceae (Pickerelweed Family)
Portulacaceae (Purslane Family)
Potamogetonaceae (Pondweed Family)
Primulaceae (Primrose Family)
Pyrolaceae (Pyrola Family)
Ranunculaceae (Buttercup Family)
Resedaceae (Mignonette Family)
Rhamnaceae (Buckthorn Family)
Rosaceae (Rose Family)
Rubiaceae (Bedstraw Family)
Santalaceae (Sandalwood Family)
Sarraceniaceae (Pitcher-plant Family)
Saururaceae (Lizard's-tail Family)
Saxifragaceae (Saxifrage Family)
Scheuchzeriaceae (Scheuchzeria Family)
Scrophulariaceae (Figwort Family)
Smilacaceae (Catbrier Family)
Solanaceae (Nightshade Family)
Sparganiaceae (Bur-reed Family)
Theophrastaceae (Theophrasta Family)
Trilliaceae (Trillium Family)
Typhaceae (Cattail Family)
Urticaceae (Nettle Family)
Valerianaceae (Valerian Family)
Verbenaceae (Vervain Family)
Violaceae (Violet Family)
Viscaceae (Mistletoe Family)
Vitaceae (Grape Family)
Xanthorrhoeaceae (Aloe Family)
Xyridaceae (Yellow-eyed Grass Family)