The first wildfire of the season sparked early Thursday morning in Samuel P. Taylor State Park, charring 35 acres of Mount Barnabe. While the cause is still unknown, the blaze began near power lines, Marin County Fire Chief Jason Weber said. The fire was reported in a 4:47 a.m. phone call: someone reported smelling smoke, then seeing flames “maybe a quarter-mile up” the hillside as the person drove westbound past Lagunitas into the park. The…