Plants slender to erect - 4-35cm tall - sometimes taller. Leaves 1-2 borne close to the ground - with a gradual transition to uppermost sheaths on the stem. Bracts narrowly ovate and acuminate (with a long - tapering tip). Flowers small - greenish to yellowish-white with deep red lines inside the lip - with faint pungent-sweet scent. Spurs about 1-3mm long - sac-like to elongate.