Scale bar is 1cm
Rushes - natives and introduced (Juncus species)
Leaves onion-like or flat or narrow
Leaves sharp pointed or leaves not sharp and pointed and stems with continuous pith
Hoary Rush (Juncus radula)
Culm narrow to medium. Flowers not in globular clusters. Upper culm and flower branches rough (like fine sandpaper.)
Stems with large or small air spaces
Stout stems (c5mm wide or more), pith mostly solid but air spaces in upper culm.
Culms green, broad. Pith sparse, with large air spaces. Culm easily squashed.
Stems shiny green, wiry, rather narrow (c2mm), Culm striations c40, strongly raised.