In message , someone
writes
Sorry if I'm reinventing the wheel but a person posted this on another site
and I can't see that they've had an answer. Any idea what this is? There
are close-ups available, it looks like a mallow of some sort.

http://john-the-r-t.110mb.com/garden/html/gdn192.html

someone


Probably Malva moschata alba (white musk mallow) - there's a white form
of Malva alcea, but that's so rare I've never seen it. (The easiest
distinguishing characters for Malva alcea and Malva moschata are not
shown in the photographs.)
--
Stewart Robert Hinsley