Green-veined Whites

This pair were very obliging and posed in the hot sun. It's their second emergence this year. The Scotch Argus are out too now but too flitty yet for pics. watched a Dark green Fritillary going into holes in the long grass and I think she was laying. didn't know that was how they did it.
Also found the huge patch of Twinflower, with creeping ladies tresses and Intermediate Wintergreen!! Wow!