 |  | True seed plants, the Angiosperms |
|  | Parallel-veined plants, the Monocots |
 |  | Alismataceae (Water-plantain family) |
|  | Amaryllidaceae (Amaryllis family) |
|  | Araceae (Arum family) |
|  | Commelinaceae (Spiderwort family) |
|  | Cyperaceae (Sedge family) |
|  | Hydrocharitaceae (Frog's-bit family) |
|  | Iridaceae (Iris family) |
|  | Juncaceae (Rush family) |
|  | Juncaginaceae (Arrow grass family) |
|  | Lemnaceae (Duckweed family) |
|  | Liliaceae (Lily family) |
|  | Najadaceae (Naiad family) |
|  | Orchidaceae (Orchid family) |
|  | Poaceae (Grass family) |
|  | Agropyron |
|  | Agrostis |
|  | Andropogon |
|  | Aristida (Awn-grass) |
|  | Bouteloua (Gramma grass) |
|  | Brachyelytrum |
|  | Bromus |
|  | Calamagrostis (Feather reed grass) |
|  | Calamovilfa |
|  | Cenchrus |
|  | Cinna |
|  | Danthonia |
|  | Digitaria |
|  | Echinocloa |
|  | Elymus (Wild rye) |
|  | Eragrostis |
|  | Festuca (Fescue) |
|  | Glyceria |
|  | Koeleria (Hair grass) |
|  | Leersia |
|  | Leptoloma |
|  | Muhlenbergia |
|  | Oryzopsis |
|  | Panicum (Panic grass) |
|  | Paspalum |
|  | Phalaris (Ribbon grass) |
|  | Phleum |
|  | Phragmites (Reed) |
|  | Poa |
|  | Schizachyrium |
|  | Secale |
|  | Setaria |
|  | Sorghastrum |
|  | Spartina |
|  | Sporobolus |
| | Stipa (Feather grass) |
|  | Zizania |
|  | Pontederiaceae (Pickerelweed family) |
|  | Potamogetonaceae (Pondweed family) |
 |  | Sparganiaceae (Bur-reed family) |
|  | Typhaceae (Cat-tail family) |
|  | Xyridaceae (Yellow-eyed grass family) |
|  | Branched-veined plants, the Dicots |
|  | Needle-leaved plants and other Gymnosperms |
|  | Ferns |
|  | Horsetails and other fern relatives |
|  | Mosses |
|  | Lichens |
|  | Mushrooms and other fungi |