Tightly packed clump; rhizome short. Stems 75-10 × 2-4 mm, ± bright green, very soft, very finely ridged, pith continuous' throughout, greyish-white, cobwebby, or interrupted by small shallow cavities below. Basal sheaths (in N.Z. specimen) bright yellow-brown. Inflorescence 4-6 cm long, variable, diffuse with several long branches, or branches shorter with more numerous densely crowded flowers. Tepals 1.5-2 mm long, ± equal, acute. Stamens 3. Capsule c. long, > tepals, ovoid, tapered to subacute top, shinning reddish-brown.