Plant to c. 15 cm. tall, often less. Stem slender, smooth, sts reddish, internodes rarely > lvs. Petiolate lvs in separate rosettes or ± spaced on lower part of fl.-stem; lamina c. 5–15 mm. long, orbicular-cordate to broad-ovate to trulliform, surface not rugose; petiole well-defined in rosette, gradually merging into lamina in lower stem-lvs. Cauline lvs, upper or all, sessile; lamina c. 5–25 × 3–6 mm., linear-to narrow-lanceolate to narrow-elliptic, uppermost us. slightly overtopping ovary. Fl. us. solitary, erect. Dorsal sepal c. 1.5–2.5 cm. tall, tip acuminate, us. ± horizontal; lateral sepals diverging to form V shape from front view, this region in side view smoothly rounded, tips long-caudate and much overtopping galea. Petals almost as long as dorsal sepal, exposed marginal strip of medium width, often nearly horizontal. Labellum arched and protruding, narrowing gradually from base to about mid-length then contracting in width more abruptly and margins recurving so that distal third is linear in outline and deeply channelled beneath, narrow apex truncate. Column shorter than labellum; stigma elliptic, slightly prominent.
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