Juncus subnodulosus Schrank

Tall-growing, loosely tufted or forming patches, stems occasionally in lines; rhizomes stout, far-extending. Stems 50–120 cm high, with 1–2 cauline leaves, internal transverse septa not present. Leaves hollow with longitudinal and transverse septa (in the recent N.Z. collections the longitudinal septa were not evident); cauline leaves with 35–60 evident transverse septa. Inflorescence to 15cm long, open, spreading and diffuse, with many small, 3–12-flowered clusters, secondary branches diverging at a wide angle (i.e. greater than 90º) or curved. Tepals c.2 mm long, blunt and incurved, hooded. Stamens 6. Capsule 2–2.5 mm long, scarcely > tepals, ovoid, trigonous, acuminate, short-beaked.

[From: Healy and Edgar (1980) Flora of New Zealand. Volume 3.]