Scale bar is 1cm
Barley-grass - introduced (*Hordeum leporinum)
Native to the Mediterraneum area and Asia. Annual. C3.
Family. Poaceae (Grass family).
Other names: *Critesion murinum ssp leporinum
- the flower cluster is a dense and spike-like
- the spikelets are in threes
- the glumes and lemmas taper into long stout awns
- the leaves are flat
- the ligules are membranous, irregularly toothed, and 0.5-1mm long.
It is similar to Northern Barley-grass in that the outer glumes of the outer spikelets are narrow at the base; the glumes of the inner spiklet and inner glumes of the outer spikelets are widened at the base.
1: Flower clusters are contracted branched sprays. 2: A group of three spikelets. 3: Dried flower cluster.
It differs from Northern Barley-grass in that
- the anthers of the central floret of are dark (pale in H. glaucum)
- the stem just below the join of the spikelets is 2.5mm or more (c2mm in H. glaucum)
- the stem just below the join of the spikelets is greenish (straw coloured in H. glaucum)
- the leaves are usually green (blue-green (glaucous) in H. glaucum)
leporinum: resembling a hare's ear.