The African- and Native-American heritage of L.A.-based artist Alison Saar takes shape in life-sized sculptures that mix elements of folklore and modern culture. Saar’s newest exhibit is “Thistle and Twitch,” presented at the Sonoma County Museum. Through the next two months, a series of film screenings and lectures will highlight cultural paths taken, or endured, by American Indians and African Americans. Saar herself appears in discussion at the “Thistle and Twitch” opening reception on Friday, Feb. 20, at the Sonoma County Museum, 425 Seventh St., Santa Rosa. 6pm. $10 for non-members. 707.579.1500.