Leaves not deeply divided
Purple flower about the size of a quarter, growing in a shaded area. (I can provide additional photos if necessary.)
(Not sure if this is the same species as the previous plant/Checkerbloom, but their color & size seemed a bit different, so I've put them up separately.)
South side Lake Calavera
Sidalcea is a genus of the botanical family Malvaceae. It contains several species of flower known generally as checkerblooms or checkermallows, or prairie mallows in the United Kingdom. They can be annuals or perennials, some rhizomatous. They are native to West and Central North America.