Probably Selaginella. Your location could help narrow down the species.

Thanks for the reply. I'm in Asia Tropical country. Saw these plant in a mountain temperature around 25-30 degree celcious. Could be a Selaginella but so far I had never seen this type of Selaginella. It's very small, the whole leaf is about a thumb size.

It's one of the Filmy Ferns, probably Hymenophyllum species. They're called "filmy" because of the very thin leaves which are usually only about one cell thick. That's why they only grow in very wet humid areas as they would dry out too quickly elsewhere. Very common around waterfalls where they get the spray all year. I've seen some that will dry out during the dry season but come back when the wet season returns. Most of them are small and grow on rocks or tree trunks. Ideal conditions for mosses are usually ideal for Filmy Ferns.

Thanks you so much for the help. You're so right, they have very thin leaves and needs to be kept in high humidity.

Hi, i have a few types of moss to ID. This is one of them, might be lichens

2nd type

3rd type

Edmond the first image looks like a fern prothallia. the second is a leafy liverwort. the third is a true moss species. it looks like a common species but i would have to guess at what it would be. On showing a moss it would be helpful to show a ruler by it.

Appreciate all of your time to help ID.

On the true moss, it appears to be a member of one of the largest moss families, the Pottiaceae. Here are links to 2 examples, the first a Tortula species Tortula ruralis and another species Leptophascum leptophyllum.

Leptophascum

Thanks for the info again. I actually have 2 of these very similar species. The moss A below is what i had showed earlier in the post.

Are you growing these? They look very healthy.

I collect them and started to grow them few months back.