Unknown grass/flower in Garry Point ID please

I shot these on several occasions in Garry Point, Richmond in summer 2017.
While flowers are comparatively easier to find in books, these smallish
grassy flowers are simply beyond my effort. Kindly take a look and enlighten
me please.

 

Trifolium arvense ?

 

Thanks a lot.
I think you are correct.

 

Hello and can you tell us location of your photos fr April 2004?

I do not recognize that flower on your photos as a “clover” tho of course it is common here in Pac NW

Here is a website to start looking around in case you’ve photographed an “invasive” plant

GOERT : Publications & Programs : Invasive Species

 

Wait - I looked at diff pix earlier in my imagination - I am sorry for confusion - yes I agree with first answer

That said - some reports on this precious ecosystem in BC consider some clover invasive

 

They were from Garry Point, SW corner of Richmond, BC.