Hylophila gracilis Schltr., Repert. Spec. Nov. Regni Veg. Beih. 1 (1911) 57
Type: Schlechter 20005 (holo B, lost; iso L)
Terrestrial, erect, 45-60 cm high. Rhizome decumbent, stem-like. Roots elongated, flexuose, villose. Stem straight or nearly straight, up to near the middle 7-10-leaved, terete, glabrous, in upper part with a few distant scale-leaves, towards the inflorescence glandulose-puberulous. Leaves erect-patent, petiolate, blade obliquely elliptic-lanceolate, acute, glabrous, 7-14 cm long, near the middle 1.8-2.8 cm wide, petiole strongly dilated at the base, clasping the stem, 3-4 cm long. Inflorescence densely many-flowered, elongated, cylindrical, rachis about 12-16 cm long, about 1.2 cm diameter across the flowers. Floral bracts erect-patent, lanceolate, acuminate, as long as or a little longer than the ovary. Flowers erect-patent. Median sepal ovate-lanceolate, narrowly obtuse, dorsally cucullate-concave, subporrect, about 0.3 cm long, sparsely glandulose-pilose. Lateral sepals obliquely ovate, obtuse, sparsely glandulose-pilose, a little longer than the median sepal. Petals almost as long as and adhering to the median sepal, shortly clawed, narrowed, obliquely oblong, obtuse, towards the apex with the front margin subangular-dilated, glabrous. Lip porrect, cucullate-saccate, broadly obtuse, the sac protruding in front, apically extended into a triangular, obtuse, small, porrect lobule, margins incurved, inside below the middle near the margin on both sides provided with two horn-like appendages, glabrous, about 0.3 cm long. Column short, rostellum bifid, subascending, porrect, about as long as the lip. Anther lanceolate-cucullate, acute, the base slightly cordate, stigma not thickened. Ovary cylindrical, glandular-puberulous, 0.7 cm long. (After Schlechter, 1911-1914).