I think that the first moss is Ambylostegium serpens (finnish lehtoritvasammal). Moss you bought as Fissidens fontanus...well it's Fissidens fontanus (finnish vellamonsammal). It would be easier to ID mosses if you would have some microscope pictures. Here in my site is some microscope pictures of mosses. Unfortunetly I haven't yet write anythig of mosses.
Kimmo
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