Shortly after Breaking Ground was released, I found a Baobab Tree near the ksp, and used it to complete two of the "Do an X scan with a rover arm of a Baobab Tree" missions, and set up a small surface science station next to it. After Steam upgraded me to 1.7.2, I got the Advanced version of the mission, built a new rover with the recently unlocked large arm and drove out to my surface science emplacement... and the tree is gone. Sorry, don't have a screenshot from when it was present