Juncus compressus Jacq., Enum.Stirp.Vindob. 60. 1762. Hook .f l.c .393 (p.p.); Krecz. & Gontsch. in Kom., l.c.527,t.28.fig.1; Snog., l.c.12; R.R. Stewart, l.c. 38.
Perennial, laxly caespitose herb, 1040 cm tall, with upto 4 basal leaves and 1-2 cauline leaves; leaves 5-25 cm x 1-2 mm, green to glaucous-green, channelled. Flowering heads on a lax, branched inflorescence; subtending bracts longer than the flowering head. Flowers 2-3 mm long. Perianth segments ovate to ovate-lanceolate, obtuse to acute. Stamens 6, shorter than the perianth segments; anthers upto c. 1 mm long. Style shorter than the stigma. Capsules obovoid - subspherical, rounded or subtrigonous, about as long as or exceeding the perianth, mucronate; seeds c. 0.5 mm long, ovoid, suboblique, striated. 2n=44
A very polymorphic species, probably affected by the habitat and salinity. However, the following subspecies and varieties are recognized for the area.