# Onderverdeling van de familie Poaceae

De Poaceae of Gramineae, de grassen vormen een uitgebreide familie. De familie is verder onderverdeeld in subfamilie en tribus. Deze geven de onderlinge verwantschap weer van de geslachten binnen de grassenfamilie.
| Subfamilie | Tribus | Geslacht |
| Bambusoideae | Bambuseae | Pseudosasa |
| Bambusoideae | Oryzeae | Leersia |
| Bambusoideae | Oryzeae | Oryza |
| Pooideae | Nardeae | Nardus |
| Pooideae | Stipeae | Stipa (vedergras) |
| Pooideae | Stipeae | Milium (gierstgras) |
| Pooideae | Poeae | Festuca (zwenkgras) |
| Pooideae | Poeae | Lolium (Raaigras) |
| Pooideae | Poeae | Vulpia (Langbaardgras) |
| Pooideae | Poeae | Micropyrum |
| Pooideae | Poeae | Cynosurus |
| Pooideae | Poeae | Lamarckia |
| Pooideae | Poeae | Puccinellia (kweldergras) |
| Pooideae | Poeae | Briza (trilgras) |
| Pooideae | Poeae | Poa (beemdgras) |
| Pooideae | Poeae | Dactylis (kropaar) |
| Pooideae | Poeae | Catabrosa |
| Pooideae | Poeae | Catapodium (Hardgras) |
| Pooideae | Poeae | Sesleria |
| Pooideae | Hainardieae | Parapholis |
| Pooideae | Melieae | Glyceria (vlotgras) |
| Pooideae | Melieae | Melica |
| Pooideae | Aveneae | Helictotrichon (veldhaver) |
| Pooideae | Aveneae | Arrhenatherum |
| Pooideae | Aveneae | Avena (Haver) |
| Pooideae | Aveneae | Trisetum |
| Pooideae | Aveneae | Koeleria (fakkelgras) |
| Pooideae | Aveneae | Deschampsia (smele) |
| Pooideae | Aveneae | Holcus (witbol) |
| Pooideae | Aveneae | Corynephorus |
| Pooideae | Aveneae | Aira (dwerghaver) |
| Pooideae | Phalarideae | Hierochloe |
| Pooideae | Phalarideae | Anthoxanthum Reukgras |
| Pooideae | Phalarideae | Phalaris (kanariegras) |
| Pooideae | Agrostideae | Agrostis (struisgras) |
| Pooideae | Agrostideae | Calamagrostis (struisriet) |
| Pooideae | Agrostideae | Ammophila (helm) |
| Pooideae | Agrostideae | Lagurus |
| Pooideae | Agrostideae | Apera (windhalm) |
| Pooideae | Agrostideae | Mibora |
| Pooideae | Agrostideae | Polypogon |
| Pooideae | Agrostideae | Alopecurus (vossenstaart) |
| Pooideae | Agrostideae | Phleum (Doddegras) |
| Pooideae | Bromeae | Bromus (dravik) |
| Pooideae | Bromeae | Bromopsis (vaste dravik) |
| Pooideae | Bromeae | Anisantha (waaierdravik) |
| Pooideae | Bromeae | Ceratochloa (Kieldravik) |
| Pooideae | Brachypodieae | Brachypodium |
| Pooideae | Triticeae | Elymus |
| Pooideae | Triticeae | Elytrigia (kweekgras) |
| Pooideae | Triticeae | Leymus |
| Pooideae | Triticeae | Hordelymus |
| Pooideae | Triticeae | Hordeum (gerst) |
| Pooideae | Triticeae | Secale (rogge) |
| Pooideae | Triticeae | Triticum (tarwe) |
| Arundoideae | Arundineae | Danthonia |
| Arundoideae | Arundineae | Molinia |
| Arundoideae | Arundineae | Phragmites |
| Chlorideae | Eragrostideae | Eragrostis (liefdegras) |
| Chlorideae | Eragrostideae | Eleusine |
| Chlorideae | Cynodonteae | Cynodon |
| Chlorideae | Cynodonteae | Spartina (slijkgras) |
| Panicoideae | Paniceae | Panicum (Gierst) |
| Panicoideae | Paniceae | Echinochloa |
| Panicoideae | Paniceae | Setaria (Naaldaar) |
| Panicoideae | Paniceae | Digitaria (Vingergras) |
| Panicoideae | Andropogoneae | Sorghum (Sorgo) |
| Panicoideae | Andropogoneae | Zea (Maïs) |
| Panicoideae | Andropogoneae | Cymbopogon (Citroengras) |