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Cutting Sedge

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Cutting Sedge photos

Scientific Name:Gahnia trifida
Cutting Sedge plant
Cutting Sedge plant
Photo: A J Brown

Other Common Name:
Coast Saw-sedge

Status:
Native to the southern coasts of Australia.

Plant Description:
Tussock forming perennial with stems 55-100 cm long and 4 mm wide. Leaf-blades are flat to inrolled and spreading, coarsely rough to the touch. Leaf-sheaths are dark brown to black, but dull.

Flower-heads are narrow, erect, 30-70 cm long, with 1 flowered spikelets. Spikelets have 4-7 glumes with the lowest 2 or 3 shorter than the rest. Anthers are 1.3-2 mm long. Fruit is an oblong to narrowly obovoid, grey to black nut, three-sided and more or less smooth and shining, 2-2.6 mm long and 0.8-1 mm wide.

Habitat:
Fringing coastal saltmarsh. Sometimes near inland saline lakes and watercourses.


RegionSalinity ClassWaterlogging Class
*Western, *GippslandS1, S2, S3, S4W2, W3
*mainly coastal only

Comments:
Cutting Sedge differs from Chaffy Saw-sedge (Gahnia filum) by its smaller nuts, more spikelet glumes and coarser leaves. Used for straw brooms in South Australia.

Cutting Sedge photos

Cutting Sedge flowerhead
Anthers exserted from spikelets of Cutting Sedge
Photo: A J Brown
Cutting Sedge flowerhead
Cutting Sedge flowerhead
Photo: A J Brown

Cutting Sedge flowerhead
Cutting Sedge flowerhead
Photo: A J Brown

Cutting Sedge stems and leaf bases
Cutting Sedge stems and leaf bases
Photo: A J Brown

Cutting Sedge flowerhead
Cutting Sedge mature flowerhead
Photo: A J Brown

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