I keep working on Brian re going on line but I dont think it will happen any time soon.
I'll ask him about photos when I see him or get time to ring.
Great Blog by the way.
the site for DGF at Withens Clough was: park at res. Walk up the tarmaced lane which doubles back on the road up from the bottom. Brian showed us the spot which was about half way up to the trees.
Marsh thistles are the common upland thistle, on tall stems, sometimes up to 6ft. Purpley-pink, occasionally white flowers. Can imagine butterflies would feed from any thistle, though. (just 3 common ones - marsh, creeping and spear- )
Same with violets, for the cats to feed on. Many bogs have a little marsh violet in them - I've seen it at Dean Head (Scammonden) and top end of Stoodley Glen recently, though I've never seen the flowers.
Dog violet is only in and around gardens as far as I know, in Calderdale.
Good Luck! Steve