The symmetry and veining made me think it could be in the iris family, but its actually family Commelinaceae.
We've had a lot of rain the last couple of summers and I think that's why I'm seeing more seedlings around. Otherwise they've been pretty well behaved garden plants. During dryer summers they usually go dormant in mid summer, which I like- rather than a non blooming plant taking up space I often set a pot of annuals in the spot.
