Dendrobium vexillarius is a variable species from the highlands of Papua New Guinea. It is variable both in plant size and in flower color. My plant is 8 cm tall but the species can be much larger. The unusually colored flowers are 3 cm and last for many months. They are produced at the end of the older pseudobulbs, often after the leaves have fallen off, and are usually two or three to each growth. My plant is grown on a piece of cedar shingle and has a pad of moss around the roots.