Polypogon viridis (Gouan) Breistr.
A solitary or loosely tufted perennial with runners, with ascending or decumbent, hairless stems 15 to 70 cm long. Leaf blade 3 to 12 cm long, 2 to 8 mm wide, slightly rough-hairy. Ligule blunt, 1.5 to 3.5 mm long. Inflorescence a dense to lax panicle 5 to 15 cm long; branches more or less in verticels; spikelets crowded to the base of the branches in the upper parts, with the longer branches without spikelets in the lower third. Spikelets with 1 floret, 1.5 to 2 mm long. Glumes unawned, blunt or pointed, rough-hairy. Lemma about 1 mm long.
Local: Fairly common in Gibraltar where it grows as a weed in gardens and cultivated plots.
Global: Found in southern Europe and the Mediterranean region, east to north-west India and central Asia.
Flowers from April, May, June, July to August.
Grows on damp, usually bare and waste ground, ditches and disturbed and cultivated areas.