Polygonum aviculare
British NVC community OV17 ("Reseda lutea" - "Polygonum aviculare" community) is one of the open habitat communities in the British National Vegetation Classification system. Although classed with communities OV15 and OV16 as an arable weed community of light lime-rich soils, it also shares many features with the communities classed as arable weed and wasteland communities of fertile loams and clays.