Plants – Grasses, Rushes & Sedges

Angiosperms
   Monocotyledons
      Order – Poales
         Family – Poaceae or Gramineae (Grass)
            Subfamily – Bambusoideae
               Tribe – Oryzeae
                  Genus – Leersia
            Subfamily Pooideae
               Tribe – Nardeae
                  Genus – Nardus
               Tribe – Stipeae
                  Genera – Anemanthele, Milium, Stipa, 
               Tribe – Poeae
                  Genera – Briza, Catabrosa, Catapodium, Cynosurus, Dactylis,  Festuca, Lolium, Poa, Puccinellia, Sesleria, Vulpia
               Tribe – Hainardieae
                  Genera – Hainardia, Parapholis,
               Tribe – Aveneae
                  Subtribe – Aveninae
                     Genera – Aira, Arrhenatherum, Avena, Corynephorus, Deschampsia, Gaudinia, Helictotrichon, Holcus, Koeleria, Trisetum,
                  Subtribe – Phalaridinae
                     Genera – Anthoxanthum, Phalaris,
                  Subtribe – Alopecurinae
                     Genera – Agrostis, Alopecurus, Ammophila, Apera, Calamagrostis, Gastridium, Lagurus, Mibora, Phleum, Polypogon, 
               Tribe – Meliceae
                  Genera – Glyceria, Melica
               Tribe – Brachypodieae
                  Genus – Brachypodium
               Tribe – Bromeae
                  Genus – Bromus
              Tribe – Triticeae
                  Genera – Elymus, Hordelymus, Hordeum, Leymus, Secale, Triticum, 
         Subfamily – Arundinoideae
             Tribe – Arundineae
                  Genera – Cortaderia, Danthonia, Molinia, Phragmites 
         Subfamily – Chloridoideae
            Tribe – Eragrostideae
               Genera – Eragrostis, Eleusine, Leptochloa
            Tribe – Cynodonteae
               Genera – Cynodon, Spartina, 
         Subfamily – Panicoideae
            Tribe – Paniceae
               Genera – Brachiaria, Cenchrus, Digitaria, Echinochloa, Panicum, Paspalum Setaria, Urochloa
            Tribe – Andropogomeae
                Genera – Sorghum, Zea

BSBI Handbook No 13. “Grasses of the British Isles“, by Tom Cope & Alan Gray. 2009

“Classification at tribal levelis largely based on gross morphology – ligule form, inflorescence and spikelet form being the most important characters – and should present few difficulties to the beginner. The more common tribes have a very distinctive look about them making it possible for the practised eye to recognize them with little more than a cursory glance.”