Japanese name: ムクゲチャヒキ Scientific name:Bromus commutatus
[Overview]
An annual or biennial 40–120 cm tall.
The stem is erect or rises obliquely.
The leaves are linear, 10–20 cm long and 3–9 mm wide, with soft hairs on both sides.
The lower leaf sheaths are densely covered with soft hairs.
The leaf sheaths have a membranous ligule 1–3 mm long.
A panicle 10–25 cm long is produced somewhat obliquely, bearing 1–6 branches.
Each branch bears 1–4 spikelets.
The spikelets are oblong, 10–25 mm long, consist of 6–10 florets, and are slightly flattened.
The spikelets are hairless, and the florets easily fall when ripe.
The lemma is elliptic, 7–11 mm long, with a stiff, erect awn of 7–10 mm at the tip.
[History]
It was first recorded in Tatebayashi, Gunma, in 1957.
It is a somewhat rare naturalized plant.
