Some small fern

[vasteq]

Hi,
It has arrived from Borneo. Quite small fern. Any idea what species it could be? Crepidomanes, Hymenophyllaceae? I dont know is it growing underwater yet, I have it for short time.

 

[Heiko Muth (Sumpfheini)]

Hi Vasteq,

cool, I mean once I've seen the same or a similar fern. Let's see if it will thrive submersed. IMO it belongs to the family Hymenophyllaceae indeed, but I don't know which genus. Anyway, seemingly there is no consensus among the botanists regarding classification of the many species (Crepidomanes / Trichomanes / Vandenboschia?).
There are sori on the leaves:


Gruß
Heiko