What is the mossy ground cover in the Nitobe Gardens?

I am new to gardening. I want to turn my back yard into a japanese garden. Currently it has grass. Yesterday I visited the Nitobe Japanese gardens at UBC to try to get some ideas of what I could do. I noticed that much of the ground was covered by a short mossy covering that looked very nice to walk on.

Does anyone know what this is?
Is there somewhere where I can get some?
If I bought it, would it come as seeds? How do I plant this?
Would it be practical in a backyard?
What kind of growing conditions does it require.
Does it stand up to being walked on?

Thanks!

 

The mossy ground cover is actually moss - and there are a number of species present in the garden.

My suggestion is to call the NMG garden gatehouse at 604-822-6038 and request a Mosses of Nitobe Garden brochure (I think they're the place most likely to have one of them)

 

I went to Nitobe Gardens, but the person at the gate did not know of any brochures with information about the moss.

 

Duly noted, I'll forward this to the person who made the brochure.

 

My apologies mbcline (and thanks to Daniel for pointing this out). The Mosses of Nitobe brochure is in the process of being "re-vamped" and reprinted. We hope to have them in the Gatehouse in the next couple of weeks.
I would be happy to place a posting here once they are in the Gatehouse.
Regards,
Ingrid