Juncus leucomelas ?

Rhizomes very short. Flower stems 3-15(-19)cm, densely tufted. Scale leaves reddish-brown. Stem leaves usually 2, sub-basal, upper part of stem leafless; blades linear, narrowed to subacute apex, which usually reaches 2/3 way up stem, unitubular, channeled above, to 5.5cm, to c.1mm wide. Sheaths with membranous margins gradually tapered into blade, auricles lacking. Infl. 5-10-flowered; lowest bract leafy, exceeding to twice length of capitulum. Tepals narrowly lanceolate, subacute, equal, (4.6)5.2-6.4mm. Anthers completely exserted at maturity, linear (1.8-)2-2.9mm; filaments 3-5.5mm. Ovary ellipsoid-trigonous (2.3-)3-3.8mm; style 1.3-2.3mm; stigmam lobes 0.5-1mm. Capsule ovoid to broadly ellipsoid, 2.6-3mm long, beak 0.8-1.5mm.