Hey Lab,

These look like what are called "liverworts" to me. They are a bit different from mosses; however, their basic nature is quite the same.

-Ben

Here is a link that might be useful: Here is some information and species descriptions

To upload images you need to use the html coding found at this link:
img src coding

Using this coding here is your image:
{{gwi:615998}}

It looks like you may have two kinds of liverworts: a thalloid one which is the main one and a leafy one though this could be a moss species. Check this goggle link for thalloid liverworts.
Goggle

Yours reminds me of a Conocephalum
Goggle Conocephalum

Thanks, Bamaud and Terrestrial_man.

I am sorry I thought the forum would mail me on post activity but mabe I have to set up how to follow the thread.

Thank you for your help.
Yes, it is definitely a liverwort - a thalloid one.
About being a Conocephalum, well, mabe.
Meanwhile, I uploaded some macros:

{{gwi:616000}}
{{gwi:616001}}
{{gwi:616002}}

I don't know why but it looks like they get some stripes - so I uploaded also a zip with all the 3 of them: http://www.agilitas.pt/moss/RB0_0319.zip

Thanks, Once again for your help.