Dendrobium mystroglossum Schltr., Bot. Jahrb. Syst. 58 (1923) 103.
Type: Ledermann 8402; 12235; 12352 (syn B, lost).
Rhizome very short. Stems crowded, patent, slender, cylindrical, soon becoming longitudinally grooved, fleshy, 30-50 cm long. Leaf sheaths entirely covering the stem. Leaves erect-patent, lanceolate to lanceolate-ligulate, narrowing to the base, 4.5-8 by 1-1.7 cm, apex setaceous-apiculate. Inflorescences racemose, short. Floral bracts ovate, much shorter than the pedicel and ovary, apex shortly acuminate to apiculate. Pedicel and ovary 1.6 cm long, subclavate, slender, glabrous. Flowers c. 1.5 cm long. Dorsal sepal oblong-elliptic, 1 cm long, apex obtuse. Lateral sepals obliquely oblong-elliptic, widened at the base, 1 cm long, apex obtuse; mentum 0.6 cm long, obtuse. Petals obliquely oblong-ligulate, subspathulate, almost as long as the sepals, margins in upper half irregularly subdenticulate. Lip obovate-spathulate, 1.3 by 0.5 cm, apical part cucullate, twice as long as the column proper, margins of apical third incurved, serrate-dentate, apex rounded. Column 0.4 cm long, clinandrium 3-lobulate, the lateral lobules obliquely semioblong, obtuse, denticulate in posterior part, the median shorter, subulate; column-foot 0.6 cm long.
(after Schlechter, 1923).
Colours: Flower orange-red or brown-red.
Habitat: Epiphyte in lower montane forest. Altitude 1000-1500 m.
Flowering time in the wild: June-August.
Distribution: New Guinea (endemic).
Distribution in New Guinea: Papua New Guinea (East Sepik Province: Hunstein Mountains, Regenberg).
Cultivation: Intermediate growing epiphyte.