Families, genera and species in Maryland Source: USDA, NRCS. 2009. The PLANTS Database (http://plants.usda.gov, 24 June 2009). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

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Select a Family	Select a Genus	Species
Malvaceae Pinaceae Fabaceae Euphorbiaceae Aceraceae Asteraceae Amaranthaceae Lamiaceae Ranunculaceae Acoraceae Pteridaceae Fumariaceae Poaceae Apiaceae Hippocastanaceae Scrophulariaceae Rosaceae Caryophyllaceae Simaroubaceae Lardizabalaceae Liliaceae Alismataceae Brassicaceae Betulaceae Lythraceae Vitaceae Apocynaceae Primulaceae Boraginaceae Orchidaceae Araliaceae Papaveraceae Araceae Aristolochiaceae Asclepiadaceae Annonaceae Rubiaceae Aspleniaceae Saxifragaceae Dryopteridaceae Chenopodiaceae Azollaceae Gentianaceae Iridaceae Berberidaceae Rhamnaceae Bignoniaceae Urticaceae Nyctaginaceae Ophioglossaceae Cabombaceae Moraceae Buddlejaceae Cyperaceae Verbenaceae Commelinaceae Callitrichaceae Calycanthaceae Convolvulaceae Campanulaceae Cannabaceae Solanaceae Juglandaceae Fagaceae Celastraceae Ulmaceae Ceratophyllaceae Cupressaceae Ericaceae Onagraceae Pyrolaceae Oleaceae Cucurbitaceae Portulacaceae Capparaceae Clethraceae Santalaceae Myricaceae Orobanchaceae Cornaceae Anacardiaceae Crassulaceae Cuscutaceae Dennstaedtiaceae Hydrangeaceae Caprifoliaceae Dioscoreaceae Ebenaceae Dipsacaceae Thymelaeaceae Droseraceae Hydrocharitaceae Elaeagnaceae Elatinaceae Hydrophyllaceae Equisetaceae Eriocaulaceae Geraniaceae Polygonaceae Sterculiaceae Limnanthaceae Hamamelidaceae Cistaceae Pontederiaceae Lycopodiaceae Violaceae Clusiaceae Aquifoliaceae Balsaminaceae Polemoniaceae Isoetaceae Grossulariaceae Juncaceae Acanthaceae Zygophyllaceae Sapindaceae Haemodoraceae Lemnaceae Plumbaginaceae Lauraceae Linaceae Magnoliaceae Lygodiaceae Agavaceae Marsileaceae Menispermaceae Menyanthaceae Molluginaceae Monotropaceae Haloragaceae Najadaceae Nelumbonaceae Nymphaeaceae Cactaceae Osmundaceae Oxalidaceae Buxaceae Passifloraceae Thelypteridaceae Arecaceae Viscaceae Phytolaccaceae Plantaginaceae Platanaceae Polypodiaceae Podostemaceae Polygalaceae Rutaceae Salicaceae Potamogetonaceae Pedaliaceae Resedaceae Melastomataceae Ruppiaceae Salviniaceae Sarraceniaceae Saururaceae Selaginellaceae Aizoaceae Sapotaceae Smilacaceae Sparganiaceae Loganiaceae Staphyleaceae Symplocaceae Taxaceae Tiliaceae Bromeliaceae Meliaceae Trapaceae Hymenophyllaceae Juncaginaceae Typhaceae Lentibulariaceae Valerianaceae Vittariaceae Blechnaceae Xyridaceae Zannichelliaceae Zosteraceae	Agrimonia Amelanchier Aphanes Argentina Aruncus Chaenomeles Crataegus Cydonia Dalibarda Duchesnea Filipendula Fragaria Geum Gillenia Malus Photinia Physocarpus Potentilla Prunus Pyrus Rosa Rubus Sanguisorba Sibbaldiopsis Sorbus Spiraea Waldsteinia	1) Crataegus calpodendron (Ehrh.) Medik. 2) Crataegus chrysocarpa Ashe 3) Crataegus chrysocarpa Ashe var. chrysocarpa 4) Crataegus crus-galli L. 5) Crataegus dissona Sarg. 6) Crataegus dodgei Ashe 7) Crataegus flabellata (Bosc ex Spach) K. Koch 8) Crataegus flava Aiton 9) Crataegus intricata Lange 10) Crataegus iracunda Beadle 11) Crataegus macrosperma Ashe 12) Crataegus margarettiae Ashe 13) Crataegus mollis Scheele 14) Crataegus pedicellata Sarg. 15) Crataegus pennsylvanica Ashe 16) Crataegus phaenopyrum (L. f.) Medik. 17) Crataegus pruinosa (Wendl. f.) K. Koch 18) Crataegus punctata Jacq. 19) Crataegus schuettei Ashe 20) Crataegus uniflora M³nchh. 21) Crataegus viridis L. 22) Crataegus viridis L. var. viridis
Pictures: genus Crataegus (Maryland): Crataegus calpodendron USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 302. - Views: 173 Crataegus calpodendron USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 302. - Views: 155 Crataegus chrysocarpa USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 306. - Views: 115 Crataegus chrysocarpa var. chrysocarpa USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 317. - Views: 115 Crataegus chrysocarpa var. chrysocarpa USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 317. - Views: 120 Crataegus chrysocarpa var. chrysocarpa USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 306. - Views: 120 Crataegus crus-galli USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 297. - Views: 449 Crataegus crus-galli USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 299. - Views: 445 Crataegus crus-galli USDA-NRCS PLANTS Database / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image - Views: 432 Crataegus dissona USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 314. - Views: 104 Crataegus flabellata USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 311. - Views: 124 Crataegus flabellata USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 310. - Views: 119 Crataegus flava Steve Hurst - USDA-NRCS PLANTS Database - Not copyrighted image - Views: 135 Crataegus flava USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 310. - Views: 133 Crataegus intricata USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 307. - Views: 398 Crataegus intricata USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 309. - Views: 398 Crataegus intricata USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 308. - Views: 397 Crataegus iracunda USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 312. - Views: 144 Crataegus macrosperma USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 310. - Views: 119 Crataegus macrosperma USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 311. - Views: 120 Crataegus margarettiae USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 300. - Views: 122 Crataegus mollis USDA-NRCS PLANTS Database - Not copyrighted image - Views: 330 Crataegus mollis USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 318. - Views: 304 Crataegus mollis Dipartimento di Scienze della Vita, Università di Trieste - Progetto Dryades - Picture by Andrea Moro - Lucca, Orto Botanico nel Parco delle Mura, LU, Toscana, Italia, - Image licensed under a Creative Commons Attribution Non Commercial Share-Alike 3.0 License - Views: 335 Crataegus phaenopyrum USDA-NRCS PLANTS Database - Not copyrighted image - Views: 233 Crataegus phaenopyrum USDA-NRCS PLANTS Database / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image - Views: 216 Crataegus phaenopyrum USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 321. - Views: 221 Crataegus pruinosa USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 312. - Views: 162 Crataegus pruinosa USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 315. - Views: 155 Crataegus pruinosa Tracey Slotta - USDA-NRCS PLANTS Database - Not copyrighted image - Views: 175 Crataegus punctata Tracey Slotta - USDA-NRCS PLANTS Database - Not copyrighted image - Views: 140 Crataegus punctata USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 301. - Views: 140 Crataegus punctata USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 300. - Views: 140 Crataegus schuettei USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 311. - Views: 104 Crataegus uniflora Tracey Slotta - USDA-NRCS PLANTS Database - Not copyrighted image - Views: 140 Crataegus uniflora USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 2: 320. - Views: 148 Crataegus viridis Steve Hurst - USDA-NRCS PLANTS Database - Not copyrighted image - Views: 135 Crataegus viridis Robert H. Mohlenbrock USDA-NRCS PLANTS Database / USDA SCS. 1991. Southern wetland flora: Field office guide to plant species. South National Technical Center, Fort Worth. - Not copyrighted image - Views: 138 Crataegus viridis USDA-NRCS PLANTS Database / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image - Views: 143