...Siems is part of a vast group of artists who have adopted "folk" or "outsider" or "vernacular" styles. Local examples include folksy surreal portraits and still-lifes painted by Jane Smaldone of Roslindale and Art Nouveau flowers, chandeliers, and constellations drawn by Mary O'Malley of Somerville. Or check out Julia Fernandez-Pol's paintings, which resemble hothouse flowers or tropical fish made of icing atop fabulous birthday cakes, in the group show "Dis-Cordances/Dis-Representations" at G.A.S.P. (362 Boylston St, Brookline) through July 20. The New York-based, Venezuelan-born, Boston University grad gets this look by squeezing out lines of paint with cake decorating tools and scalloping thick dollops with knives...