Which white is right?

 At this time of year we have a number of white flowered plants in bloom, some nearing the end of their time, some just beginning. The thing is it can be tricky identifying them using the flower alone.

Here are 3 late spring, early summer plants, but what are they?

If I told you they are pignut, cow parsley and sanicle, would that make it easier?

One of them is certainly easier to figure out than the others, the left hand plant is sanicle, but what about the other two?

Ok, ill put you out of your misery, middle one is pignut, right hand one is cow parsley..

Don't think its ever enough to just identify plants by their flower, leaf, stem and location are all critical factors in good bushcraft botany.