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Cyperus clarus S.T.Blake
Family Cyperaceae
Cyperus clarus S.T.Blake APNI*

Description: Slender tufted perennial.

Culms triquetrous to trigonous, smooth or scabrous above, 20–80 cm high, 1–2.5 mm diam.

Leaves ± septate-nodulose, shorter than culms, to 6 mm wide. Inflorescence simple, with 3–6 branches to 10 cm long; clusters ± dense, subdigitate to shortly spicate, subglobose, to 35 mm diam.; involucral bracts leaf-like, 2 or 3 exceeding inflorescence. Spikelets flattened, 8–20 per cluster, 7–18 mm long, 3–4.5 mm wide in side view, 8–15-flowered; rachilla not to broadly winged; glume spacing 1.2–1.5; spikelet with rachilla persistent. Glumes acute with excurved mucro to 0.8 mm long, with sides 3- or 4-nerved, 2.5–4 mm long, golden brown to brown. Stamens 3. Style 3-fid.

Nut trigonous, obovoid, half to two-thirds as long as glume, 1.6–1.9 mm long, 0.6–0.8 mm diam., grey to nearly black.

Flowering: spring–summer.

Distribution and occurrence: Grows in grassland or open woodland, on heavy soils derived from basalt; north from near Delungra.
NSW subdivisions: NWS
Other Australian states: Qld
AVH map***

Text by K. L. Wilson
Taxon concept: Flora of NSW 4 (1993)

APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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