Biogenic silica concentrations and phytolith morphology and abundance in green leaf material are described in 34 species/subspecies of Chionochloa (Danthonieae) and nine species/subspecies of Festuca (Poeae). A dry‐ash technique was used to extract biogenic silica from mature leaves from plants grown in potting mix. Phytolith morphology and abundance were characterised by scanning electron microscopy and light microscopy, resp...