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Cyperus gunnii Hook.f. subsp. gunnii Family Cyperaceae
Cyperus gunnii subsp. gunnii Hook.f. APNI*

Synonyms: Mariscus gunnii (Hook.f.) C.B.Clarke APNI*

Description: Tall, tufted perennial with short thick rhizome. Culms trigonous to terete, smooth or occasionally scabrous, to 150 cm high, 1.7–4 mm diam.

Leaves septate-nodulose, as long as to exceeding culms, to 6.5 mm wide.

Inflorescence simple to compound with 5–8 primary branches to 12 cm long; clusters dense, spicate to subdigitate, globose, to 20 mm diam.; involucral bracts leaf-like, 2 or 3 much longer than inflorescence. Spikelets flattened, numerous per cluster, 6–15 mm long, 1.5–2.5 mm wide in side view, 6–15-flowered; rachilla narrowly to broadly winged; glume spacing 1.2–2.2 mm; spikelet falling as unit, or rachilla persistent. Glumes broad-acute with mucro to 0.2 mm long, with sides 2–4-nerved, 2–2.7 mm long, usually red-brown to dark

Nut trigonous, narrow-ellipsoid, about three-quarters as long as glume, 1.5–2.2 mm long, 0.5–0.7 mm diam., pale yellow-brown to dark brown.


Flower
Photo L. von Richter

Flowering: spring–summer.

Distribution and occurrence: From coast west to Nyngan and West Wyalong district. Also in SE Qld, Vic, Tas, SA.

Grows in swamps and along streams.
NSW subdivisions: NC, CC, SC, NT, ST, NWS, CWS, SWS, NWP, SWP, ?SFWP
Other Australian states: Qld Vic. Tas. S.A.
AVH map***

Text by KL Wilson (1991); edited KL Wilson (March 2014)
Taxon concept: KL Wilson, Telopea 4(3) (1991)

The only subspecies in NSW. Characters and distribution as for the species in NSW.

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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