Theological Question

On our drive to the Green Mountain trailhead yesterday, we saw a church in some small town that had an electronic readerboard facing the highway. On of the more curious messages announced a meeting of a “Vegetarian Support Group”. Since this was in a small rural town, and not in the supercilious Seattle granola belt, we drew the conclusion that, as with the religious movement to “cure” gays, the purpose of this “support” group was probably to get vegetarians back on the godly path of meat-eating.
Just then, this question occurred to me: If you’re vegetarian, and believe in transubstantiation, can you take communion? One possible solution would offer itself if Christ ever appeared to anyone in the form of a vegetable, but even my poor religious education, derived from a Methodist indoctrination which consisted almost wholly of plotting ways to give attractive girls rides home after church and MYF meetings, tends toward the negative on this question.