| Field notes | Herb with short rhizome and vigorous, spinleshaped storage roots c. 2 mm in diameter. Pseudostem erect 12-35 cm, 3-5 mm in diameter. Leaves (3-) 4-6 (-7); lamina narrowly cordate,longest towards apex, (4,0-) 5.2-7.0 by 1.7-2-0 cm, lowermost 3-4 strongly reduced: from only a leaf sheath to an amplexicaul rim, towards thr inflorescence enlarged; lamina sessile with cordate, amplexixaul base; apex acute to acuminate; glabrous on both sides; leaf sheats completely fused throughout the lenght, glabrous; ligule absent. Inflorescence erect 5.1-13.0 cm long. Bracts distichous, leaf-like, (3-) 6-10 (-12), sheath slightly to deeply split throughout the lenght, lamina lanceolate to narrowly lanceolate, lowermost bract the longest, 4.8-6.0 by 1.0-1.4 cm, following bracts diminishing towards apex ending with 1-2 sterile terminal bract(s) of 4.0-7.0 by 1.2-2.5 cm; bracteole lanceolate, apex rounded, 13 by 2.4 mm. Each bract subtends one yellow flower. Ovary glabrous, c. 5 mm long. Calyx tubular, 1.5-2.4 cm long 2.5-3 mm in diameter, split down on one side c. 1/6 of the lenght, apex 3-4-dentate. Corolla tube 3.5-4.0 cm long, 2 mm in diameter, dorsal corolla lobe oblong, c. 16 by 6 mm, hooded, with apex produced into a thorn-like, c. 1.3 mm long point; lateral corolla lobes narrowly obovate, c. 16 by 5 mm, apex slightly emaginate. Labellum suborbicular to depressed obovate with wavy margin, 3.0-3.5 by 4.0-5.5 cm. Filament short, c. 1 mm long; anther panduriform, c. 3.8 by 2.6 mm; anther crest recurved, elliptic to widely ovate, c. 6.0 by 4.4 mm; stylodial glands spherical, c. 0.4 mm; style inserted between anther sacs; stigma shallowly obtringular, c. 4.8 mm wide with ciliate margin. Fruits a unilocular, fleshy capsule, yellowish-green, ellipsoid, glabrous, c. 1.7 by 0.5 cm, opening by a wide, oval slit. Seeds dark brown, ovoid, c. 3.5 by 1.5 mm, completely covered with fine longitudinal epidermal cells, aril absent. Only spirit collection available in AAUF |