Compilation
Cyperus micromedusaeus

Small perennial or perhaps sometimes annual with a minute root system with densely pubescent roots; stems 2–8 cm long and 0.5–0.8 mm thick, obtusely triangular or with 1 flat and 1 concave side, glabrous with shallow longitudinal ridges, not swollen at the base. Leaves all basal; sheaths light brown to purplish with wide translucent margins, glabrous, densely crowded and forming a 1–1.5 cm long and 3–5 mm thick narrowly ovate cylinder or pseudobulb; blades probably 1–2 cm long but strongly and repeatedly spirally twisted, 0.2–0.5 mm wide, as dry reddish brown, very thick and glabrous except for the thin uncoloured and irregularly scabrid marginal border. Inflorescence a solitary terminal group of 2–6 sessile erect or spreading spikelets; involucral bracts 2–3, up to 1 cm long with a glume-like base and a spirally twisted blade. Spikelets 6–20 x 2–2.5 mm, linear, 10–50-flowered; rhachis reddish brown, flattened but not winged, with flowers at c. 0.5 mm intervals. Glumes 2–2.5 mm long, triangular-ovate, light to medium reddish brown with an indistinct paler margin, with 5–7 prominent narrow nerves on each side of the midrib that is thickened above and excurrent into a short (to 0.5 mm long) slightly recurved mucro, glabrous except for the often scabrid midrib. Stamens 3. Style 2.5–3 mm long, with 3 branches. Nutlet 0.7–0.9 x 0.4–0.5 mm, obovate, triangular with 3 flat sides, greyish and smooth with a prominent cuticular layer, darker to almost blackish and minutely papillose when this layer is worn off.