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Oreobolus oxycarpus S.T.Blake
Family Cyperaceae
Oreobolus oxycarpus S.T.Blake APNI*

Description: Small, mat-forming herbs to 10 cm high.

Leaves spirodistichous; sheaths with rounded auricles; pseudopetiole slightly concave, 5–16 mm long; blade 7–17 (rarely to 25) mm long, 0.5–1.2 mm wide, densely covered with stomates adaxially and with 2 faint ribs or without ribs; apex obtuse.

Inflorescence with 1–3 spikelets. Spikelets 4–12 mm long. Glumes 3, whitish with green apex to pale brown, occasionally tinged dark red-brown; outermost glume 3.7–11 mm long; innermost glume 2.5–5 mm long. Scales straw-coloured. Anthers 1–3 mm long.

Nut ovoid, with long-tapering conical apex often collapsing at maturity, 1.8–2.9 mm long, 0.7–1.1 mm diam., yellow-brown or with apex blackish.

Flowering: summer.

Distribution and occurrence: Grows in bog areas and on swampy ground in high altitude to alpine areas; Barrington Tops, and south from the Brindabella Ra.
NSW subdivisions: NT, ST
Other Australian states: Vic. Tas.
AVH map***

Text by K. L. Wilson
Taxon concept:

One subsp in NSW: Oreobolus oxycarpus subsp oxycarpus

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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