They are annual plants. It has stems 15-65 cm tall, erect or geniculate-ascending, glabrous. Leaves with a 2-3.5 mm ligule , oblong, subacute; limbus 3-8 cm x 1-3 (-4) mm, flat.
Panicle 5-17 cm, lax, with primary and secondary branches largely bare at the base, hirtas or scabrids. Peduncles shorter than spikelets or slightly longer, slightly thickened at the apex. Spikelets 1.9-2.6 mm. Glumesuneven, lanceolate, acute or acuminate, broadly scarious, with a scabrid keel; the lower one 1.9-2.6 mm; the upper one 1.5-2.1 mm. Lemma 0.9-1.3 mm, with 5 veins, the lateral ones shortly prolonged beyond the apex, glabrous, with a 3-4 mm dorsal ridge, geniculate, inserted slightly above the middle of the lemma. Callus with some short hairs. Palea very reduced. Anthers 0.7-1 mm. Caryopsis of 1 x 0.3 mm. 2n = 14, 16, 18, 19, 21. Flowers from April to July.
This plant might be poisonous
How to get rid of:
Knock it out with nitrogen. Generally speaking, a well-fertilized lawn keeps all weeds at bay, but ensuring proper nitrogen levels will give you an extra edge against clover. It’s a lack of nitrogen that allows clover to thrive, so try a nitrogen-rich weed-and-feed formula. Organic fertilizers might do the trick if you have a small amount of clover, but if your lawn is becoming overrun, choose a standard fertilizer that is not slow release.