Cyperus lhotskyanus Boeckeler APNI*
Synonyms: Cyperus rutilans (C.B.Clarke) Maiden & Betche APNI*
Description: Slender perennial with short rhizome.
Culms solitary, trigonous to subterete below, smooth, with bases subbulbous occasionally, 20–60 cm high, 1.2–3 mm diam. Leaves occasionally septate-nodulose, shorter than to exceeding culms, to 4 mm wide.
Inflorescence simple to compound, with 3–7 primary branches to 11 cm long; clusters spicate to subdigitate, dense, hemispherical to globose, to 25 mm diam.; involucral bracts leaf-like, 1–3 about twice as long as inflorescence. Spikelets flattened, numerous per cluster, 6–15 mm long, 2.5–4 mm wide in side view, 6–12-flowered; rachilla not to broadly winged; glume spacing 1.2–1.8 mm; spikelet falling as unit, or rachilla persistent. Glumes retuse to acute with mucro to 0.5 mm long, with sides 2–4-nerved, 2.6–4 mm long, red-brown. Stamens 3. Style 3-fid.
Nut trigonous, narrow-obovoid to narrow-ellipsoid, about three-quarters as long as glume, 1.8–2.2 mm long, 0.6–0.8 mm diam., yellow-brown.
Distribution and occurrence: Grows on stream banks and floodways; south from Tenterfield on tablelands to Newnes and west to Nymagee area.
NSW subdivisions: CC, SC, NT, CT, ST, NWS, CWS, SWS, SWP
Other Australian states: Vic. S.A.
Text by K. L. Wilson
Taxon concept: Flora of NSW 4 (1993)
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