I wonder how to do that on a Mac.. A lot of botanical terminology comes out wrong.. Mine also does "we're" when I type "were".. Most of the times I go back and read what I've written and correct the computer's mistakes.
Back to the moss... My soil leans slightly towards Alkaline. I get moss mostly in the shade, but also in the winter on my DG paths... I just lightly hula hoe it up before it gets too thick. If it were getting in between Iris here, I would think that there wasn't enough light. We stay pretty dry through the summer.