Plants of
South Australia
Deyeuxia quadriseta
Gramineae
Reed Bent-grass
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Adelaide
Arkaroola
Ceduna
Coober Pedy
Hawker
Innamincka
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Botanical art

Kath Alcock paintings: 12.

Etymology

Deyeuxia named after Nicolas Deyeux (1753-1837), a Professor at the School of Pharmacy and Faculty of Medicine, Paris. Quadriseta from Latin meaning four bristles;

Distribution and status

Found in southern South Australia, from Port Augusta to the lower South-east growing in moist areas, by creeks and in swamps. Also found in Western Australia, New South Wales, Victoria and Tasmania. Native. Common in South Australia. Common in the other States.
Herbarium regions: Flinders Ranges, Eyre Peninsula, Murray, Southern Lofty, Kangaroo Island, South Eastern
NRM regions: Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
AVH map: SA distribution map (external link)

Plant description

Glabrous perennial grass to 1m high with rigid stems having glabrous nodes. Leaves stiff, flat or finally inrolled; ligule long, truncate, glabrous. Flower-spike a dense cylindrical panicle, sometimes slightly branched to 15 cm long; glumes narrow, acute, subequal 4.5-5 mm long, the lower one slightly longer; lemma shorter, usually minutely scabrous; 4-nerved and with 4 teeth, of which 2 are often longer; awn almost basal, c. 5.5 mm long, shortly exserted beyond the glumes; tufts about half as long as the lemma; bristle absent. Flowering between October and May. Fruits are golden-brown compact long fruit-spike. Seeds are brown grain to 2 mm long and 0.5 mm wide. Seed embryo type is lateral.

Seed collection and propagation

Collect seeds between December and July. Use hands to gently strip seeds off the mature seed spike that are turning straw colour. Mature seeds will come off easily. Alternatively, you can break off the whole seed spike. Place the seeds/spike in a tray and leave to dry for two weeks. No further cleaning is required if only seed collected. If seed spikes collected, use hand to strip off the mature seeds. Store the seeds with a desiccant such as dried silica beads or dry rice, in an air tight container in a cool and dry place.

Seeds stored:
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LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
 
MSB

6,800 (2.05 g)
50+13-Jan-2007RJB71044
Southern Lofty
0%
Location: BGA — the seeds are stored at the Adelaide Botanic Gardens, MSB — the seeds are stored at the Millennium Seed Bank, Kew, England.
Number of plants: This is the number of plants from which the seeds were collected.
Collection location: The Herbarium of South Australia's region name.
% Viability: Percentage of filled healthy seeds determined by a cut test or x-ray.