I have inherited two mounted Dendrobium biggibum...the short compact that Sonya have and the long thin stemmed ones...also a Dendrobium aggregatum. Two months ago just before its winter rest I put a Dendrobium anosmum in a basket lined with coco fiber and covered the roots with treefern shavings.
I also recently posted my Dendrobium Golden Aya mounted in a treefern slab and it is in full bloom.