We consider uniform spanning tree (UST) in topological rectangles with alternating boundary conditions. The Peano curves associated to the UST converge weakly to hypergeometric SLE 8 , denoted by hSLE 8 . From the convergence result, we obtain the continuity and reversibility of hSLE 8 as well as an interesting connection between SLE 8 and hSLE 8 . The loop-erased random walk (LERW) branch in the UST converges weakly to SLE 2 (−1, −1; −1, −1). We also obtain the limiting joint distribution of the two end points of the LERW branch.