Arthrochilus oreophilus D.L.Jones

Rosette absent or on lateral growth; leaves 2–5, lanceolate, 25–75 × 8–26 mm, bluish green. Flower stem 80–200 mm tall, 2–15-flowered. Flowers 12–20 mm long, green with thinly clubbed, dark reddish brown labellum glands. Dorsal sepal 9–10 × 2–2.5 mm. Lateral sepals 6–7 × 2 mm. Petals linear, 6.5–7 × 1 mm. Labellum stalk c. 4 mm long. Labellum lamina c. 6 × 1 mm, pale green with purple basal blotch; free basal part of labellum c. 2.5 mm long. Callus c. 3.5 mm long; central area densely covered with shiny, thinly clubbed calli 0.3–0.6 mm long; margins densely covered with shiny calli; limb of callus c. 2 mm long, apex deeply notched, c. 1.8 mm wide, with shiny black warts.

Relatively widespread and locally common; growing on slopes and ridges in forest and woodland in freely draining clay soil and accumulated leaf litter.