Plants up to 20 cm tall. Leaves 1–3, basal, rosulate, subsessile to petiolate, petiole up to four cm long; lamina up to 16 cm long and 5.5 cm wide, oblanceolate, acute to subacuminate, gradually attenuate, villose throughout. Peduncle erect to somewhat arcuate, densely villose, without sheaths, terminated by a subdensely up to 10-flowered, raceme. Flowers greenish yellow, sepals rather sparsely pubescent-villose on the outer surface. Floral bracts up to 10 mm long, ovate-lanceolate, acuminate, villose. Pedicellate ovary up to 20 mm long, densely villose. Dorsal sepal 4–10.5 mm long, 2.3–3 mm wide, narrowly elliptic-lanceolate, acute, connivent with petals, 3-veined. Petals shortly unguiculate; claw ca 1–1.5 mm long; lamina up to 10 mm long and three mm wide, oblong-dolabriform to ligulate, obtuse, prominently round-auriculate at base, 2–3-veined. Lateral sepals up to 11 mm long and seven mm wide, broadly ovate, connate to middle, trapezoid in outline, truncate in front, inside sparsely papillose, multi-veined. Lip subsessile, up to four mm long in total, 2.5 mm wide, appressed against the column part, triangular in outline with a replicate base which is excised in the shape of reversed V, at the apex with a circular, cochleate callus, extending in a ligulate-cymbiform tip, basally with broadly spread, tubular lateral lobes. Gynostemium ca three mm long, massive, subsessile (Fig. 37).
Ecology: Terrestrial. Flowering in September and November.
Distribution: Ecuador, Colombia. Alt. 3,000 m. The occurrence of this species in Colombia
was reported by Pedro Ortiz Valdivieso (1995).

Notes: P. appendiculata is easily separated from other representatives of the genus by peculiar lip form, which is triangular in outline with a replicate base. It is excised in the shape of a reversed V. The lip apex has a circular, cochleate callus, extending in a ligulate-cymbiform tip, and the base has broadly spread, tubular lateral lobes.