It's never good news when the key takes you to bryum. But 300 couplets later I had my moss. It only took me 4 couplets to get to with my BBS guide though and it even had a picture for confirmation.
This moss had precurrent and excurrent costas depending on what leaf you looked at.
The leaves are 1-2mm long and .5-1 mm wide. The entire plant was about 1.5cm tall.
I thought the limbidium, and hyline awn would make this moss easy to figure out. But is a it a clear limbidium or a partially obscured limbidium? That is where I took a wrong turn in the Madrono key. Madrono says it's not clearly a limbidium.. OK...
This bryum was mixed into a cushion of some other moss that was falling off of a shady east facing cement wall.
The other moss was even smaller and I don't know if I dare to try to ID it.
It was a very good tardigrade producer. I found 3-4 clear tardigrades in this, one had green guts.