Robust perennial herbs 7-10 dm tall, strongly rhizomatous and bulbous-based, the bulbs ovoid, thick-scaled, at ends of short, scaly, ascending or horizontal rhizomes. Principal leaves stiff, subdistichous (the lower ones transitional to bulb scales and mostly sheath), erect to slightly ascending, twisted, 30-50 cm long, longer than the scape sheaths; sheaths (and bulb scales) ecarinate, scabridulous, ciliate or ciliolate at dilated base, sordidly purple-brown, multicostate, abruptly dilated below, then gradually narrowed in to blade, eligulate; blades compressed, linear, slightly twisted, 3 - 4 times longer than sheaths, l ongitudinally distinctly few-nerved, the tips asymmetrically subulate; margins thickened, entire, commonly with median sulcus. Scape sheaths firm, twisted, shorter than leaves. Scapes straight or flexuous, twisted, terete toward apex, ca. 1 mm thick, finely striate. Spikes broadly to narrowly ovoid, 1.2-2 mm long, short-attenuate, blunt or obtuse, several-flowered, the sterile bracts several, the lowermost pair oblong-lanceolate, ca. 5 mm long, blunt with linear dorsal areas, the inner ones broader, gradually longer, grading evenly into the fertile; fertile bracts broadly obovate, 8 -8.5 mm long, ecarinate, broadly convex, broadly rounded, entire becoming erose, the dorsal areas elliptic, greenish brown, with indistinct median costae. Lateral sepals free, strongly inequilateral, broadly spathulate, 7-7.5 mm long; carinal keel broad, irregularly ciliolate. Petal blades broadly obovate to suborbicular, 6mm long, yellow, dentate. Staminodia bibrachiate, the branches densely long-penicillate. Anthers curved-oblong, 2- 2.5 mm long, emarginate and deeply sagittate, the filaments stout, c a. 0.5-1 mm long. Capsule obovoid, ca. 3.5 -4 mm long, the placentation basal. Seeds numerous on long funicles, broadly ellipsoid, apiculate, 0.4 -0.5 mm long, shiny, deep brown, longitudinally distinctly multicostate.