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Cyperus mirus C.B.Clarke
Family Cyperaceae
Cyperus mirus C.B.Clarke APNI*

Description: Small, densely tufted perennial.

Culms filiform, terete to trigonous, smooth, to 55 cm long, c. 0.5 mm diam.

Leaves not septate-nodulose, usually shorter than culms, filiform. Inflorescence a sessile digitate cluster to 20 mm diam. of 1–5 spikelets, without branches; involucral bracts leaf-like, 2–4 much exceeding inflorescence. Spikelets flattened, 3–14 mm long, 1.5–2 mm wide in side view, 5–30-flowered; rachilla not winged, persistent. Glumes acuminate, excurved, with sides 1–3-nerved, c. 2 mm long, whitish to pale brown. Stamens 3. Style 3-fid.

Nut trigonous, obovoid to ellipsoid, half to two-thirds as long as glume, c. 0.8 mm long, c. 0.7 mm diam., trabeculate and striate, black.


Flowering: spring–summer.

Distribution and occurrence: Grows in rainforest and other moist shady habitats, including gardens; north from Sydney region.
NSW subdivisions: NC, CC
Other Australian states: Qld
AVH map***

The trabeculate and striate surface of the nut is unique in the genus.

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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