mberkey's Identifications

this plant was forming tight unbranched mats on a decaying long. the tips of these plants were naked ending with a ball of red gemmae. the sporophyts were sprouting from the stalks but some were at the tip.

We found this growing on the ground among leaf litter. There is a disagreement whether it is a moss or a vascular plant.
It kind of looks like a plagiothecium, but bigger. There does seem to be a root, though its short, so could be a rhizoid. It's stem is thick, with a clear costa/midrib visible to the naked eye. Leaves are thicker and longer than most mosses.

I vote on the side of vascular plant, but my colleague disagrees.

What do you think?