Tree fundamentals October 19, 2021 RWhitcomb-editor “Cathedral of the Forest (acrylic on wood), by Rose Olson, in her show “Rose Olson: New Works,’’ through Oct. 31 at Kingston Gallery, Boston. She has studios in Boston’s South End and in Beverly, on Massachusetts’s North Shore. Braddock Park, in the South End— Photo by Payton Chung Veterans Memorial Bridge, looking toward Beverly from Salem