2n = c. 50, 50

2n = 50

2n = 50

2n = 50

Plant to c. 15 cm tall, often less. Stem slender, smooth, usually green but sometimes reddish, internodes rarely longer than leaves. Petiolate leaves in separate rosettes or more or less spaced on lower part of flowering stem; lamina c. 5-15 mm long, orbicular-cordate to broadovate to trulliform, surface not usually rugose with raised veins; petiole well defined in rosette, merging gradually into lamina in lower stemleaves. Upper or all cauline leaves sessile; lamina c. 5—25 × 3—6 mm, linear- to narrow-lanceolate to narrow-elliptic, the uppermost usually slightly overtopping the ovary. Flower usually solitary, erect. Dorsal sepal c. 1.5-2.5 cm tall, the tip acuminate and usually more or less horizontal; lateral sepals diverging at such an angle as to form a wide V shape from front view, this region in side view smoothly rounded and not jutting sharply forward, the tips long-caudate-filiform and much overtopping galea. Petals almost as long as dorsal sepal, the exposed marginal strip of medium width, often nearly horizontal. Labellum arcuate, narrowing gradually and concave from base to about midlength, then contracting in width more abruptly and the margins recurving so that the distal third is linear in outline and deeply channelled beneath, the narrow apex truncate. Column shorter than labellum; stigma elliptic, slightly prominent.

Caulis gracilis laevis plerumque viridis. Folia rosulata longe petiolata late ovato-cordata. Folia caulina plerumque linearia vel lineari-elliptica sessilia, inferiora interdum rosulatis similia plus minusve petiolata nonnulla interdum trulliformia, supremum ovarium plerumque superans. Flos solitarius. Perianthium basi erectum dein plus minusve horizontale, galeae altitudino interdum 2 cm excedens. Sepala lateralia apice longe filiformia connata in labium inferius erectum sinu acuto curvatum neque abrupte prominens. Petala sepalum dorsale plus minusve aequantes apicem versus mediocriter explanata. Labellum ad medium usque latius dein angustius fere lineare apice truncatum marginibus revolutis, columnam excedens. Stigma ellipticum prominulum.

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.