Plant identification

I just found a good looking plant I haven't seen before in my local store.
It apparently came mixed in with a shipment of Java Fern and looks like it
is related. It isn't in any of my books.

It is a dark green with leaves of the same sort of texture as Java Fern.
However the leaves grow on stiff, stand-up stalks are triangular shaped,
toothed and have an "accordion-type" surface. It appears to have the same
sort of roots as Java Fern and grows on a piece of wood. The fellow working
in the store (who is quite knowledgable but doesn't know this plant) says
that it reproduces like Java Fern -- off the leaves. It is however, also
putting out growth from the base of the main stem as well.

Can anyone tell me the name of this plant?

in wet, misty, green, Vancouver