An erect branched woody shrublet 20-25 cm high, the branches ascending, the younger with alternate leaves, the older with fascicles of small leaves. Leaves 3-4 mm long, ascending, longer than the internodes, thickened and more or less revolute at the edges, the tip aristate-mucronate. Leaves in the axillary fascicles obtuse with no hair-point. Stipules covering the internodes, half to two-thirds the length of the leaves, scarious, gradually narrowed from base to tip, often brown, loosely fringed with coarse bristles. Inflorescence terminal, spike-like, 0.5-1.5 cm long, compact or lax below. Bracts leaf-like, the lower longer than the flowers, the upper shorter. Flowers 1-2 to each bract, sessile or nearly so. Perianth about 1 mm long, the segments obtuse, cucullate, green with a white margin, the middle bulged outwards. Stamens on a very small disc. Stigmas 3, rather thick.
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Like P. diffusa but leaves with revolute margins, stipules long, flowers in spike-like tufts.