| Scientific Name | Common Name | Image |
|---|---|---|
| Acanthaceae | Acanthus Family |  (c) Sorrie, Bruce A. - CC-BY |
| Achatocarpaceae | Snake-eyes Family | |
| Acoraceae | Calamus Family |  (c) Fleming, Gary P. |
| Actinidiaceae | Kiwi-fruit Family |  (c) Fleming, Gary P. |
| Agavaceae | Agave Family |  (c) Cressler, Alan M. |
| Aizoaceae | Fig-marigold Family |  (c) Martín-Bravo, Santiago - CC-BY |
| Alismataceae | Water-plantain Family |  (c) Cressler, Alan M. |
| Alliaceae | Onion Family |  (c) Bradley, Keith |
| Alstroemeriaceae | Peruvian-lily Family | |
| Altingiaceae | Sweet-gum Family |  (c) Bradley, Keith |
| Amaranthaceae | Amaranth Family |  (c) Fleming, Gary P. |
| Amaryllidaceae | Amaryllis Family |  (c) Cressler, Alan M. |
| Anacardiaceae | Cashew Family |  (c) Fleming, Gary P. |
| Anemiaceae | Pineland Fern Family |  (c) Cressler, Alan M. |
| Annonaceae | Custard-apple Family |  (c) Bradley, Keith |
| Apiaceae | Carrot Family |  (c) Fleming, Gary P. |
| Apocynaceae | Dogbane Family |  (c) Bradley, Keith |
| Apodanthaceae |  (c) Berger, Matt - CC-BY | |
| Aquifoliaceae | Holly Family |  (c) Bradley, Keith |
| Araceae | Arum Family |  (c) Cressler, Alan M. |
| Araliaceae | Ginseng Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Araucariaceae | Norfolk Island Pine Family |  (c) alexbarnard - CC-BY |
| Arecaceae | Palm Family |  (c) Ward, Scott G |
| Aristolochiaceae | Birthwort Family |  (c) Cressler, Alan M. |
| Asparagaceae | Asparagus Family |  (c) Bradley, Keith |
| Asphodelaceae | Asphodel Family | |
| Aspleniaceae | Spleenwort Family |  (c) Cressler, Alan M. |
| Asteraceae | Aster Family |  (c) Fleming, Gary P. |
| Athyriaceae | Lady Fern Family |  (c) Cressler, Alan M. |
| Balsaminaceae | Touch-me-not Family |  (c) Cressler, Alan M. |
| Basellaceae | Madeira-vine Family |  (c) Peden, David - CC0 |
| Bataceae | Batis Family |  (c) Sorrie, Bruce A. - CC-BY |
| Begoniaceae | Begonia Family |  (c) Gibson, Clint - CC-BY-NC, permission granted to NCBG |
| Berberidaceae | Barberry Family |  (c) Ward, Scott G |
| Betulaceae | Birch Family |  (c) Bradley, Keith |
| Bignoniaceae | Bignonia Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Blechnaceae | Deer Fern Family |  (c) Cressler, Alan M. |
| Boraginaceae | Borage Family |  (c) Fleming, Gary P. |
| Brassicaceae | Mustard Family |  (c) Fleming, Gary P. |
| Bromeliaceae | Bromeliad or Pineapple Family |  (c) Campos, Aidan |
| Burmanniaceae | Burmannia Family |  (c) Sorrie, Bruce A. - CC-BY |
| Burseraceae | Frankincense Family |  (c) Cressler, Alan M. |
| Butomaceae |  (c) Nesterova, Svetlana - CC-BY-NC, permission granted to NCBG | |
| Buxaceae | Boxwood Family |  (c) Fleming, Gary P. |
| Cabombaceae | Water-shield Family |  (c) Bradley, Keith |
| Cactaceae | Cactus Family |  (c) Hill, Sonnia |
| Calophyllaceae | Calophyllum Family |  (c) Bradley, Keith |
| Calycanthaceae | Sweet-shrub Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Calyceraceae | Calycera Family |  (c) Svenning, Jens-Christian - CC-BY |
| Campanulaceae | Bellflower Family |  (c) Bradley, Keith |
| Canellaceae | Canella Family | |
| Cannabaceae | Hops Family |  (c) Bradley, Keith |
| Cannaceae | Canna Family |  (c) Bradley, Keith |
| Capparaceae | Caper Family |  (c) Ward, Scott G - CC-BY |
| Caprifoliaceae | Honeysuckle Family |  (c) Fleming, Gary P. |
| Caricaceae | Papaya Family |  (c) Campos, Aidan |
| Caryophyllaceae | Pink Family |  (c) Bradley, Keith |
| Casuarinaceae | Casuarina Family |  (c) Benotsch, Matt - CC-BY |
| Celastraceae | Bittersweet Family |  (c) Ward, Scott G |
| Cephalotaxaceae | Plum-yew Family | |
| Ceratophyllaceae | Hornwort Family |  (c) Niernberger, Trix - CC0 |
| Cercidiphyllaceae | Katsura Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Cervantesiaceae | Buffalo Nut Family |  (c) Bradley, Keith |
| Chenopodiaceae | Goosefoot Family |  (c) Fleming, Gary P. |
| Chionographidaceae | Fairy-wand Family |  (c) Bradley, Keith |
| Chrysobalanaceae | Coco-plum Family |  (c) Campos, Aidan |
| Cistaceae | Rockrose Family |  (c) Bradley, Keith |
| Cleomaceae | Cleome Family |  (c) Bradley, Keith |
| Clethraceae | Clethra Family |  (c) Sorrie, Bruce A. - CC-BY |
| Clusiaceae | Mangosteen Family | |
| Cochlospermaceae | Cochlospermum Family |  (c) González, Francisco Martínez - CC-BY-SA |
| Colchicaceae | Meadow-saffron Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Comandraceae | Comandra Family |  (c) Sorrie, Bruce A. - CC-BY |
| Combretaceae | Combretum Family |  (c) Ward, Scott G |
| Commelinaceae | Spiderwort Family |  (c) Sorrie, Bruce A. - CC-BY |
| Convolvulaceae | Morning Glory Family |  (c) Bradley, Keith |
| Cordiaceae | Geiger-tree Family |  (c) Campos, Aidan |
| Cornaceae | Dogwood Family |  (c) Fleming, Gary P. |
| Costaceae | Costus Family |  (c) Irvine, Thomas - CC-BY |
| Crassulaceae | Stonecrop Family |  (c) Fleming, Gary P. |
| Cucurbitaceae | Gourd Family |  (c) Tasney, Greg - CC-BY-SA |
| Cupressaceae | Cypress Family |  (c) Bradley, Keith |
| Cyatheaceae | Scaly Tree Fern Family | |
| Cycadaceae | Cycad Family, Sago-palm Family |  (c) Matt - CC-BY-NC, permission granted to NCBG |
| Cymodoceaceae | Manatee-grass Family |  (c) Horn, Jay |
| Cyperaceae | Sedge Family |  (c) Fleming, Gary P. |
| Cyrillaceae | Titi Family |  (c) Ward, Scott G |
| Cystopteridaceae | Brittle Fern Family |  (c) Danielson, Erik |
| Davalliaceae | Hare's-foot Fern |  (c) Chen, Jacy - CC-BY |
| Dennstaedtiaceae | Bracken Family |  (c) Fleming, Gary P. |
| Diapensiaceae | Diapensia Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Diervillaceae | Bush-honeysuckle Family |  (c) Ward, Scott G |
| Dioscoreaceae | Yam Family |  (c) Bradley, Keith |
| Diplaziopsidaceae | Glade Fern Family |  (c) Sorrie, Bruce A. - CC-BY |
| Dipsacaceae | Teasel Family |  (c) Fleming, Gary P. |
| Droseraceae | Sundew Family |  (c) Fleming, Gary P. |
| Dryopteridaceae | Wood-fern Family |  (c) Sorrie, Bruce A. - CC-BY |
| Ebenaceae | Ebony Family |  (c) Fleming, Gary P. |
| Ehretiaceae | Ehretia Family |  (c) Bradley, Keith |
| Elaeagnaceae | Oleaster Family |  (c) Sorrie, Bruce A. - CC-BY |
| Elatinaceae | Waterwort Family |  (c) Keesling, Jim - CC-BY-NC, permission granted to NCBG |
| Ephedraceae | Ephedra Family |  (c) Kieschnick, Sam - CC-BY |
| Equisetaceae | Horsetail Family |  (c) Danielson, Erik |
| Ericaceae | Heath Family |  (c) Bradley, Keith |
| Eriocaulaceae | Pipewort Family |  (c) Sorrie, Bruce A. - CC-BY |
| Erythroxylaceae | ||
| Eucommiaceae | Gutta-percha Tree Family |  (c) Marcum, Paul |
| Euphorbiaceae | Spurge Family |  (c) Bradley, Keith |
| Fabaceae | Legume Family |  (c) Fleming, Gary P. |
| Fagaceae | Beech Family |  (c) Bradley, Keith |
| Frankeniaceae | Frankenia Family |  (c) Stephens, William - CC-BY |
| Fumariaceae | Fumitory Family |  (c) Ward, Scott G |
| Garryaceae | Garrya Family |  (c) Danielson, Erik |
| Gelsemiaceae | Jessamine Family |  (c) Sorrie, Bruce A. - CC-BY |
| Gentianaceae | Gentian Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Geraniaceae | Geranium Family |  (c) Fleming, Gary P. |
| Ginkgoaceae | Ginkgo Family | |
| Gisekiaceae | Gisekia Family | |
| Gleicheniaceae | Forking-fern Family |  (c) Cressler, Alan M. |
| Goodeniaceae | Goodenia Family |  (c) Bradley, Keith |
| Grossulariaceae | Currant Family |  (c) Fleming, Gary P. |
| Haemodoraceae | Bloodwort Family |  (c) Sorrie, Bruce A. - CC-BY |
| Haloragaceae | Water-milfoil Family |  (c) Fleming, Gary P. |
| Hamamelidaceae | Witch-hazel Family |  (c) Cressler, Alan M. |
| Heliconiaceae | Heliconia Family |  (c) Struwe, Lena - CC-BY-SA |
| Heliotropiaceae | Heliotrope Family |  (c) Bradley, Keith |
| Heloniadaceae | Swamp-pink Family |  (c) Ward, Scott G |
| Hemerocallidaceae | Day-lily Family |  (c) Sorrie, Bruce A. - CC-BY |
| Huperziaceae | Firmoss Family |  (c) Bradley, Keith |
| Hyacinthaceae | Hyacinth Family |  (c) Hosper, Andre - CC-BY |
| Hydrangeaceae | Hydrangea Family |  (c) Bridges, Edwin |
| Hydrastidaceae | Goldenseal Family |  (c) Ward, Scott G |
| Hydrocharitaceae | Frog's-bit Family |  (c) Fleming, Gary P. |
| Hydroleaceae | Hydrolea Family |  (c) Cressler, Alan M. |
| Hydrophyllaceae | Waterleaf Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Hymenophyllaceae | Filmy Fern Family |  (c) Cressler, Alan M. |
| Hypecoaceae |  (c) Hernandez, Nico - CC-BY | |
| Hypericaceae | St. John's-wort Family |  (c) Bradley, Keith |
| Hypoxidaceae | Stargrass Family |  (c) Bradley, Keith |
| Illiciaceae | Star-anise Family | |
| Iridaceae | Iris Family |  (c) Sorrie, Bruce A. - CC-BY |
| Isoetaceae | Quillwort Family, Merlin's-grass Family | |
| Iteaceae | Sweetspire Family |  (c) Fleming, Gary P. |
| Juglandaceae | Walnut Family |  (c) Bradley, Keith |
| Juncaceae | Rush Family |  (c) Fleming, Gary P. |
| Juncaginaceae | Arrowgrass Family |  (c) Ward, Scott G |
| Koeberliniaceae | Allthorn Family | |
| Krameriaceae | Krameria Family |  (c) Cressler, Alan M. |
| Lamiaceae | Mint Family |  (c) Fleming, Gary P. |
| Lardizabalaceae | Lardizabala Family |  (c) Weakley, Alan |
| Lauraceae | Laurel Family |  (c) Bradley, Keith |
| Lentibulariaceae | Bladderwort Family |  (c) Fleming, Gary P. |
| Liliaceae | Lily Family |  (c) Bradley, Keith |
| Limnanthaceae | Meadow-foam Family |  (c) Smith, David |
| Linaceae | Flax Family |  (c) Gwaltney, John |
| Linderniaceae | False-pimpernel Family |  (c) Fleming, Gary P. |
| Lindsaeaceae | Necklace Fern Family |  (c) Bradley, Keith |
| Linnaeaceae | Twinflower Family |  (c) Danielson, Erik |
| Loasaceae | Loasa Family |  (c) Campos, Aidan |
| Loganiaceae | Strychnine Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Lomariopsidaceae | Fringed Fern Family |  (c) Bradley, Keith |
| Lycopodiaceae | Clubmoss Family |  (c) Bradley, Keith |
| Lygodiaceae | Climbing Fern Family |  (c) Bradley, Keith |
| Lythraceae | Loosestrife Family |  (c) Fleming, Gary P. |
| Magnoliaceae | Magnolia Family |  (c) Bradley, Keith |
| Malpighiaceae | Malpighia Family |  (c) Campos, Aidan |
| Malvaceae | Mallow Family |  (c) Bradley, Keith |
| Marantaceae | Arrowroot Family |  (c) Bradley, Keith |
| Marsileaceae | Water-clover Family |  (c) Cressler, Alan M. |
| Martyniaceae | Martynia Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Mayacaceae | Bogmoss Family |  (c) Griffith, Floyd A. |
| Mazaceae | Mazus Family |  (c) Fleming, Gary P. |
| Melanthiaceae | Bunchflower Family |  (c) Fleming, Gary P. |
| Melastomataceae | Melastome Family |  (c) Campos, Aidan |
| Meliaceae | Mahogany Family |  (c) Bradley, Keith |
| Menispermaceae | Moonseed Family |  (c) Fleming, Gary P. |
| Menyanthaceae | Buckbean Family |  (c) Ward, Scott G |
| Molluginaceae | Carpetweed Family |  (c) Bradley, Keith |
| Montiaceae | Montia Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Moraceae | Mulberry Family |  (c) Fleming, Gary P. |
| Moringaceae | Moringa Family |  (c) Corder, Brandon |
| Muntingiaceae | Muntingia Family |  (c) Bradley, Keith |
| Musaceae | Banana Family |  (c) Sagnik, Dutta Roy - CC-BY |
| Myricaceae | Bayberry Family |  (c) Fleming, Gary P. |
| Myrtaceae | Myrtle Family |  (c) Bradley, Keith |
| Namaceae | Fiddleleaf Family |  (c) tentoedsloth - CC-BY |
| Nartheciaceae | Bog-asphodel Family |  (c) Potterfield, Tom |
| Nelumbonaceae | Lotus-lily Family |  (c) Parkins, Grant Morrow |
| Nephrolepidaceae | Sword Fern Family |  (c) Bradley, Keith |
| Nitrariaceae | ||
| Nyctaginaceae | Four-o'clock Family |  (c) Bradley, Keith |
| Nymphaeaceae | Water-lily Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Nyssaceae | Tupelo Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Ochnaceae | Ochna Family |  (c) Wetterer, James K. - CC-BY-NC, permission granted to NCBG |
| Oleaceae | Olive Family |  (c) Cressler, Alan M. |
| Onagraceae | Evening-primrose Family |  (c) Fleming, Gary P. |
| Onocleaceae | Sensitive Fern Family |  (c) Bradley, Keith |
| Ophioglossaceae | Adder's-tongue Family |  (c) Fleming, Gary P. |
| Orchidaceae | Orchid Family |  (c) Bradley, Keith |
| Orobanchaceae | Lousewort Family |  (c) Sorrie, Bruce A. - CC-BY |
| Osmundaceae | Royal Fern Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Oxalidaceae | Wood-sorrel Family |  (c) Fleming, Gary P. |
| Paeoniaceae | Peony Family |  (c) Rostron, Carter - CC-BY |
| Pandanaceae | Screw-pine Family |  (c) 葉子 - CC0 |
| Papaveraceae | Poppy Family |  (c) Ward, Scott G |
| Parnassiaceae | Grass-of-Parnassus Family |  (c) Fleming, Gary P. |
| Passifloraceae | Passionflower Family |  (c) Sorrie, Bruce A. - CC-BY |
| Paulowniaceae | Paulownia Family |  (c) Danielson, Erik |
| Pedaliaceae | Sesame Family |  (c) Wong, Michelle - CC-BY |
| Pentaphylacaceae | Pentaphylax or Sakaki Family |  (c) Wright, Janet - CC-BY-NC, permission granted to NCBG |
| Penthoraceae | Penthorum Family |  (c) Ward, Scott G |
| Petiveriaceae | Petiveria Family |  (c) Cressler, Alan M. |
| Philydraceae | Philydrum Family |  (c) Bradley, Keith |
| Phrymaceae | Lopseed Family |  (c) Fleming, Gary P. |
| Phyllanthaceae | Leaf-flower Family |  (c) Fleming, Gary P. |
| Phytolaccaceae | Pokeweed Family |  (c) Sorrie, Bruce A. - CC-BY |
| Picramniaceae | Bitterbush Family |  (c) Bradley, Keith |
| Pinaceae | Pine Family |  (c) Bradley, Keith |
| Piperaceae | Pepper Family |  (c) Bradley, Keith |
| Pittosporaceae | Pittosporum Family |  (c) Bradley, Keith |
| Plantaginaceae | Plantain Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Platanaceae | Plane-tree Family |  (c) Bradley, Keith |
| Plumbaginaceae | Leadwort Family |  (c) Fleming, Gary P. |
| Poaceae | Grass Family |  (c) Fleming, Gary P. |
| Podocarpaceae | Podocarp Family |  (c) Sørensen, René Boe - CC-BY |
| Podostemaceae | Riverweed Family |  (c) Cressler, Alan M. |
| Polemoniaceae | Jacob's-ladder Family |  (c) Fleming, Gary P. |
| Polygalaceae | Milkwort Family |  (c) Bradley, Keith |
| Polygonaceae | Smartweed Family |  (c) Fleming, Gary P. |
| Polypodiaceae | Polypody Family |  (c) Cressler, Alan M. |
| Pontederiaceae | Pickerelweed Family |  (c) Ward, Scott G |
| Portulacaceae | Purslane Family |  (c) Fleming, Gary P. |
| Potamogetonaceae | Pondweed Family |  (c) Bradley, Keith |
| Primulaceae | Primrose Family |  (c) Fleming, Gary P. |
| Proteaceae | Protea Family | |
| Psilotaceae | Whiskfern Family |  (c) Cressler, Alan M. |
| Pteridaceae | Maidenhair Fern Family |  (c) Cressler, Alan M. |
| Putranjivaceae | Guiana-plum Family |  (c) Hernández, Alexis López - CC-BY |
| Ranunculaceae | Buttercup Family |  (c) Fleming, Gary P. |
| Resedaceae | Mignonette Family |  (c) vadimrybakov69 - CC-BY-NC |
| Rhamnaceae | Buckthorn Family |  (c) Fleming, Gary P. |
| Rhizophoraceae | Red Mangrove Family |  (c) Cressler, Alan M. |
| Rosaceae | Rose Family |  (c) Fleming, Gary P. |
| Rubiaceae | Madder Family |  (c) Fleming, Gary P. |
| Ruscaceae | Ruscus Family |  (c) Fleming, Gary P. |
| Rutaceae | Citrus Family |  (c) Sorrie, Bruce A. - CC-BY |
| Salicaceae | Willow Family |  (c) Sorrie, Bruce A. - CC-BY |
| Salviniaceae | Floating Fern Family |  (c) Cressler, Alan M. |
| Santalaceae | Sandalwood Family |  (c) Sorrie, Bruce A. - CC-BY |
| Sapindaceae | Soapberry Family |  (c) Ware, Richard & Teresa - CC-BY-NC, permission granted to NCBG |
| Sapotaceae | Sapodilla Family |  (c) Sorrie, Bruce A. - CC-BY |
| Sarraceniaceae | Pitcherplant Family |  (c) Ward, Scott G |
| Saururaceae | Lizard's-tail Family |  (c) Bradley, Keith |
| Saxifragaceae | Saxifrage Family |  (c) Cressler, Alan M. |
| Scheuchzeriaceae | Scheuchzeria Family |  (c) Ward, Scott G |
| Schisandraceae | Star-vine Family | |
| Schizaeaceae | Curly-grass Family |  (c) Danielson, Erik |
| Schoepfiaceae | Schoepfia Family |  (c) Bradley, Keith |
| Scrophulariaceae | Figwort Family |  (c) Fleming, Gary P. |
| Selaginellaceae | Spikemoss Family |  (c) Cressler, Alan M. |
| Simaroubaceae | Quassia Family |  (c) Sorrie, Bruce A. - CC-BY |
| Smilacaceae | Greenbriar Family |  (c) Bradley, Keith |
| Solanaceae | Nightshade Family |  (c) Fleming, Gary P. |
| Sphenocleaceae | Chickenspike Family |  (c) Diamond, Alvin - CC-BY-NC, permission granted to NCBG |
| Staphyleaceae | Bladdernut Family |  (c) Bradley, Keith |
| Stemonaceae | Stemona Family |  (c) Cressler, Alan M. |
| Styracaceae | Storax Family |  (c) Sorrie, Bruce A. - CC-BY |
| Surianaceae | Bay-cedar Family |  (c) Sorrie, Bruce A. - CC-BY |
| Symplocaceae | Sweetleaf Family |  (c) Bradley, Keith |
| Talinaceae | Fameflower Family |  (c) tentoedsloth - CC-BY |
| Tamaricaceae | Tamarisk Family |  (c) Kelly, CK - CC-BY |
| Taxaceae | Yew Family |  (c) Cressler, Alan M. |
| Tectariaceae | Halberd Fern Family |  (c) Bradley, Keith |
| Tetrachondraceae | Tetrachondra Family |  (c) Bradley, Keith |
| Theaceae | Tea Family |  (c) Horn, Jay |
| Thelypteridaceae | Marsh Fern Family |  (c) Bradley, Keith |
| Themidaceae | Brodiea Family |  (c) Campos, Aidan |
| Thesiaceae | Thesium Family |  (c) Shaw, Joey |
| Thymelaeaceae | Mezereum Family |  (c) Fleming, Gary P. |
| Tofieldiaceae | False-asphodel Family |  (c) Bradley, Keith |
| Trilliaceae | Trillium Family |  (c) Bradley, Keith |
| Tropaeolaceae | Nasturtium Family |  (c) Shaw, Joey |
| Turneraceae | Turnera Family |  (c) Bradley, Keith |
| Typhaceae | Cattail Family |  (c) Danielson, Erik |
| Ulmaceae | Elm Family |  (c) Bradley, Keith |
| Urticaceae | Nettle Family |  (c) Fleming, Gary P. |
| Valerianaceae | Valerian Family |  (c) Fleming, Gary P. |
| Verbenaceae | Verbena Family |  (c) Fleming, Gary P. |
| Viburnaceae | Viburnum Family |  (c) Fleming, Gary P. |
| Violaceae | Violet Family |  (c) Ward, Scott G |
| Viscaceae | Christmas Mistletoe Family |  (c) Campos, Aidan |
| Vitaceae | Grape Family |  (c) Fleming, Gary P. |
| Woodsiaceae | Woodsia Family |  (c) Cressler, Alan M. |
| Xerophyllaceae | Beargrass Family |  (c) Cressler, Alan M. |
| Ximeniaceae |  (c) Cressler, Alan M. | |
| Xyridaceae | Yellow-eyed Grass Family | |
| Zamiaceae | Zamia Family |  (c) Cressler, Alan M. |
| Zingiberaceae | Ginger Family |  (c) Bradley, Keith |
| Zosteraceae | Eelgrass Family |  (c) Chiasson, Lena Dietz - CC-BY-NC, permission granted to NCBG |
| Zygophyllaceae | Creosote-bush Family |  (c) Bradley, Keith |