: Lepanthes davidii is most similar to L. ankistra Luer & Dressler, but can be easily distinguished by the petals with the lower lobe triangular, acute (vs. petals with the lower lobe subfalcate and strongly uncinate), the lip with blades oblong-lunate with the apex and base sub-acute, (vs. blades ovate with the apex rounded and an acute base), and a bisegmented slender appendix with an ovoid deflexed apical portion (vs. single segment concave appendix with an apical gland). Plants medium in size, epiphytic, caespitose, 13.1– 17.4 cm tall; roots, slender, flexuous, filiform, 0.4 mm in diameter. Ramicauls slender, suberect to horizontal 10.8–15.3 cm long, enclosed by 6–13 acuminate, furrowed, and microscopically pubescent lepanthiform sheaths, with a dilated, ciliate ostia. Leaves purple, more or less vertical at an angle of 90º from the ramicaul, coriaceous, corrugate, reticulate-veined, with 8 main veins, corrugate, ovate, attenuate, 6.1–6.9 × 2.3–3.4 cm, the apex emarginate with an abaxial apiculum in the middle, the obtuse base cuneate contracted into a petiole 2–3 mm long. Inflorescence a congested, distichous raceme, 12–26, successively many-flowered, up to 1.3–4.4 cm long, including the peduncle, held appressed to the adaxial surface of the leaf by a filiform, terete peduncle, 0.7–3.1 cm long, borne near the apex of the ramicaul; floral bracts conical, acuminate, minutely ciliate, 0.5–1.1 mm long; pedicels terete, 2.2–2.6 mm. Ovary terete, costate, 2.5 mm long. Flowers with sepals fulvous-yellow, dorsal sepal reddish-brown in the center; petals with lobes dull green, reddish-brown in the center; lip dull red-violet, column dull green. Dorsal sepal broadly ovate, acute, slightly revolute in natural position, 3-veined, 3.3–4.0 × 2.7–2.9 mm connate to the lateral sepals for 0.9 mm. Lateral sepals, ovate, oblique, slightly attenuate, 2-veined, 2.9–3.4 × 1.9–2.0 mm, connate for 1.6–1.7 mm long. Petals transversally bilobed, pubescent, imbricate 0.9–1.3 × 4.3–6.5 mm, with a filiform marginal midlobe, 1.1–1.7 mm long, 3-veined; the upper lobe oblong, sub-falcate, truncate, minutely erose; the lower lobe triangular, sub-sigmoid towards the apex, acute. Lip bilaminate, microscopically pubescent, the blades oblong-lunate, with sub-acute base and apices, thin, flat, adherent medially to each other over the column, 2.2–3.1 × 0.6–0.8 mm, supported by cuneate connectives from near the middle, the body broad, adnate to the base of the column, the sinus obtuse, with a bisegmented slender, recurved, pubescent appendix with an ovoid apical portion deflexed and the basal portion concave. Column, terete, bilobed with short, lateral, triangular lobes, 1.5 mm long, the clinandrium large, rostellum oblong-truncate, the anther dorsal, and stigma ventral. Anther cap cordate, cucullate, 0.5 mm wide. Pollinia 2, yellow, pyriform, narrowly obovoid, 0.7 mm long