weed in lawn

Hi, I have discovered a fast growing weed in my lawn. It's taking over and appears to grow from single points and thread itself through the lawn. Pic attached. Anyone know what it is and how to get rid if it?

Thanks.

 

Is it bindweed? If it's bindweed it'll twist around things like grass stems and grow roots from the stem. Bindweed spread vegetatively, which means that the points coming out of the ground are stronger and faster growing than if it's from seeds.

 

I thought bindweed, but it's not the same. I follow the leaves and stalk back to the root and try and pull it out. Leaves a nasty bald patch.

 

Not Calystegia sepium....common name bindweed.
The leaves of which are single up the stem.....not in pairs as the plant in the pic.

http://www.discoverlife.org/IM/I_TQBH/0002/320/Calystegia_sepium,I_TQBH264.jpg

For same reason as above it is not field bindweed..Convolvulus arvensis.

https://www.google.co.uk/search?q=C...%3FLatinName%3DConvolvulus%2Barvensis;240;377

Sorry cannot think what this is.

 

Thanks for replies. Can anyone recommend an effective weed killer for grassed areas, without it harming the grass?
Thanks.

 

Could it be Common Enchanter's Nightshade or Alpine Enchanter's Nightshade

 

It's not Enchanters Nightshade, do you have a lilac tree nearby? It could be a sucker from that.

 

Not sure, the leaves on my weed are more rounded and broader.

 

No lilac tree.

 

This won't be easy Damian but have a look here.......

https://www.google.com/search?q=wee...Y81oVcnvLIvnUtzqgbgF&sqi=2&ved=0CBwQsAQ#imgrc=_

 

I think I may have it....maybe...chickweed?

 

Is it Polygonum ? We used to have that growing in our lawn.