Unfortunately the photo you sent is impossible to make an identification from. This because, as you will read in all the literature, one HAS to see the rhizome-scales to identify any Lepisorus. So in addition to the general photo, it needs a good close-up photo carefully positioned against the light so one can see the scales clearly.
Having said that, I can probably take a wild guess that this is probably L. sublinearis - especially if fronds mostly arise together and the specimen takes a long time to dry. But please don't take that as an identification. Only, it MIGHT be sublinearis.
Best wishes,
Chris Fraser-Jenkins, Portugal.