Plants 300-1000 mm high, forming large, loose tufts. Rhizome compact and corm-like, ± 20 mm diam. Stem consisting of 1 long basal internode, slightly flattened, elliptic in section, 2-4 mm diam. near base, striate when dry but without stomatiferous furrows, branching in upper 1/3, forming a hemispherical, ± laxly panicle. Foliage leaves 4 to 8 in a basal fan, ± 2/3 as long as flowering stem, linear, 3-7 mm wide, striate. Rhipidia several, solitary at branch tips, together forming a lax panicle, on branches 10-30 mm long subtended by leaf-like bract with unifacial blade, 20-50 mm long, immediately associated with next bract, internodes viscid; pedicels subglabrous; spathes with translucent membranous margins and brownish apices; outer ± 1/3 as long as inner, 4-7 mm long, inner 14-20 mm long. Flowers yellow; tepals free, elliptic, outer 10-16 x 4-6 mm, inner slightly smaller. Filaments 2-3 mm long; anthers ± 3 mm long. Ovary exserted, smooth; style 1-2 mm long, branches 3-4 mm long. Capsules broadly obovoid to subglobose, smooth, 6-10 mm long.
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Rhizomatous perennial, 40-100 cm, stem branched above and sticky below nodes. Leaves linear. Flowers in solitary cymes loosely clustered near top of stem, yellow.