This is another tiny species from New Guinea, but it belongs to a different section than most of the New Guinea Dendrobiums I post. This jewel is from section Calyptrochilus. The plant is only 4 cm tall and the flowers are 1.5 cm. There is a blue-flowered form of this species as well, but both have the blue "column" that gives the species its name. I am flowering this for the first time and it has only a single flower, but I thought I'd post it anyway.