This unknown variety is on its second rebloom. According to the web information on D. nobile hybrids, they usually require a period of sun in the summer, dormancy in the fall, and then bloom in winter or spring. This plant keeps putting out new flowers. Not a lot, but that doesn't matter. In addition, it has many buds. It just doesn't know the rules. I did have it in full sun, but now it's in a shaded south window. The other D. nobile remain in the sun, and seem to be more conventional. Currently I'm giving them a low-N plant food, continuing the weakly-weekly method.
Dendrobium phaelenopsis hybrid, purchased at the Missouri Botanical garden in St. Louis. My selection was restricted by size. I wanted small, so that I could keep in the carry-on. I made a loose tube of newspaper, seemed to protect this plant well enough. They had no problem with this at the St. Louis airport security. It fit well under the airplane seat. Label gives variety as "Genting". Given the appearance of the plant, and the shape of the flower, I wonder if the gift plant that I identified as "Vappodes" is really a D. phaelenopsis hybrid? If it blooms, I'll have a better idea. The leaves are somewhat different but that may be due to age of plant and my culture conditions.