| Tasmania
has four introduced species of barleygrass (Hordeum).
They are all moderate to large grasses with flat leaves. The
characteristic feature is that the spikelets are
one-flowered and are in groups of three densely clustered
along the main axis of the inflorescence.
Hordeum marinum is known as sea barleygrass. H.
vulgare is known as six-row barley. H.
distichon is two-row barley.
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