Dendrobium Illusion is a hybrid of the micro-miniature Dendrobium cuthbertsonii and the large cane-type Dendrobium lawesii. It has short, upright canes that are reminiscent of lawesii, but only a few inches tall. The flowers are most like cutherbertsonii, but it is easier to grow and freer blooming than that species. In fact, because the flowers last so long - up to six months - the three plants I have are never out of flower. This one has the shortest canes and the best flowers and is in a 1.5 inch clay pot, though the pot is not visible because of the moss.
These are the parents. The first photo is of Dendrobium lawesii and the second of Dendrobium cuthbertsonii. Both are very variable in color, so I suppose this cross could be make to bloom in all the colors of the rainbow.
A link to a post showing another plant of this cross is here: http://orchidsinbloom-ron.blogspot.com/2010/07/dendrobium-illusion.html