These dryads are the human stand-ins, if you
will, seen in behind the scenes features, and dancing at the
coronation in the bloopers. It seems that they were - or, in
the case of the coronation dance, would have been - later replaced
with the CG blossom look, above.
"... in the 11th hour the Dryads became
CGI effects... I think there was not a clear idea yet while
we were filming what they might be, so it was decided that they
be actors in flowing wardrobe filmed, but then replaced digitally
later on in post." (NarniaWeb's
Howard Berger Interview)
This appearance seems to match the books' description
of dryads: "It is hard to explain if you have never
seen a Dryad but quite unmistakable once you have - something
different in the colour, the voice, and the hair."
They wear a "skirt" of tendrils of mossy foliage
tinted blueish green, which matches their flowing long "hair."
Their midriffs are almost bare, with vines up their backs. Their
skin is pale sandy green.