Cyperus enervis R.Br. APNI*
Synonyms: Cyperus debilis R.Br. APNI*
Description: Small, densely tufted perennial.
Culms terete to trigonous, smooth, to 50 cm high, c. 0.6 mm diam.
Leaves not septate-nodulose, usually shorter than culms, c. 0.5 mm wide. Inflorescence a digitate cluster to 25 mm diam. of 2–14 spikelets, without branches, or rarely a solitary spikelet; involucral bracts leaf-like, 2–4 much longer than inflorescence, the lowest erect. Spikelets flattened, 3–15 mm long, c. 2 mm wide in side view, to 20-flowered; rachilla not or narrowly winged, persistent. Glumes acute, with sides 1- or 2-nerved, c. 2 mm long, whitish to pale brown. Stamens 3. Style 3-fid.
Nut trigonous, broad-obovoid, not much shorter than glume, 1.2–1.3 mm long, 0.7–0.9 mm diam., dark brown.
Distribution and occurrence: Grows in rainforest and wet sclerophyll forest; north from Wyong.
NSW subdivisions: NC, CC
Other Australian states: Qld
There is a small but distinct globose bulge near the base of the style base, which is persistent on the nut.
Text by K. L. Wilson (1993); edited KL Wilson (JUne 2020)
Taxon concept: Flora of NSW 4 (1993)
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