I would not have recognised them as
Coprinopsis lagopus at all, and I've been seeing
Coprinopsis lagopus here on a daily basis for the last 4 months or more on the many woodchip piles around here ....

So I just checked Ulje's Coprinus site and noticed the following, particularly the bit I've put in italics:
'Coprinus lagopus can be recognized by the terrestrial habitat, preferably to wood-chips or vegetable refuse, the dense, hairy fibrillose, whitish to silvery grey veil, the average spore length > 11 µm and average spore breadth > 6.7 µm, and the thin-walled veil with terminal elements up to c. 40 µm wide.
Close to Coprinus lagopus and exclusively growing in lawns, an aberrant form has been collected, characterized by very fragile basidiocarps that develop during the evening and night and quickly disappear the next morning, leaving only laying, silvery white stipes with collapsed caps and having somewhat larger (12-15 µm long) and very dark spores (coll. Uljé 1264 and 1268). '
So I think it is perhaps this one that is 'close to'
Coprinopsis lagopus.
Cheers
Melanie