Bulbophyllum mystrophyllum Schltr., Repert. Spec. Nov. Regni Veg. 16 (1919) 124
Type: Kempter s.n. (Kaiser Wilhelmsland, area behind Vanimo) (holo B, lost)
Epiphyte, pendulous, c. 10 cm long. Rhizome flexous, entirely covered by overlapping, acute or acuminate, dorsally keeled, distichous sheaths. Roots filiform, flexuose, thin, glabrous. Pseudobulbs 1.5-3 cm apart, cylindrical, somewhat compressed, appressed to the rhizome, 0.35-0.45 by 0.2 cm diam; 1-leaved. Leaves suborbicular, somewhat concave, fleshy, sessile, 3-4 by 2.5-3.5 cm near the middle. Inflorescences many-flowered, single, from near the base of the pseudobulbs; peduncle 1-1.5 cm long, with a few small peduncle-scales; raceme dense, with short deltoid, acute bracts which are almost 3 times shorter than the pedicellate ovary. Median sepal broadly elliptic, concave without the appendage 0.3 cm long; apex with an antenniform, clavate, sharply bent, short appendage,. Lateral sepals somewhat concave, obliquely ovate-triangular, apex extended in a appendage subulate, obtuse, porrect, hardly larger than the oned of the median sepal. Petals obliquely elliptic, obtuse, 0.13 cm long. Lip curved, tongue-shaped, below the middle somewhat dilated, as long as the petals; in upper half the margins obtuse and shortly lacerate-papillose; apex obtuse; upper part in the basal half thinly 2-ribbed, keels 2 from the middle, margins ortis soon becoming close together per the middle longitudinally decurrent aucto. Column very short, shorter than the petals; column-foot incurved. Ovary acute 3-angled, pedicellate, 0.4 cm long, glabrous. Fruit obliquely oblongoid, triangular, glabrous. c. 1.2 cm long. (After Schlechter, 1919)
Colours: Flower probably yellowish.
Distribution: Malesia (New Guinea).
Distribution in New Guinea: Papua New Guinea.