Seeds of South Australia
Deyeuxia minor (Gramineae)
Small Bent-grass
List of species for Deyeuxia
Click on an image to enlarge it
Seed collecting:
December to February
Herbarium regions:
Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Kangaroo Island, South East
IBRA regions
Mount Gambier (SVP02)Southern Volcanic Plain
 Vulnerable   (IUCN: VU D2)
Glenelg Plain (NCP02)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU D2)
Kangaroo Island (KAN01)Kanmantoo
 Vulnerable   (IUCN: VU D2)   [protected within reserves]
Fleurieu (KAN02) 
 Vulnerable   (IUCN: VU B2ab(iii); D2)   (Probable Decline)   [in Scott Ck; weeds a threat]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Vulnerable   (IUCN: VU B2ab(iii); D2)   (Probable Decline)   [in Cleland, Mt Bold; threatended by blackberry, needs weed control]
RSCA map:
Regional Species Conservation Assessments per IBRA subregion. Please click the thumbnail map.
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Deyeuxia]
Name derivation:
Deyeuxia named after Nicolas Deyeux (1753-1837), a Professor at the School of Pharmacy and Faculty of Medicine, Paris. Minor from Latin meaning small; referring to the species smaller habit.
Distribution:
Found on Kangaroo Island, southern Mount Lofty Ranges and the lower-South-east in South Australia, growing in damp areas under light eucalypt cover or margins of wet sclerophyll forest. Also found in Victoria and Tasmania.
Status:
Native. Rare in South Australia. Common in the other states.
Plant description:
Slender tufted, glabrous perennial grass, culms ascending or erect, to 50 cm high. Leaf-blades flat or folded, to 15 cm long and 2 mm wide, smooth or finely scabrous, often flaccid. ligules obtuse, mostly 1–2 mm long. Flower-spike a dense cylindrical panicle to 4 cm long. Spikelets to 3.5 mm long and rather plump, green or more often purplish; glumes equal, acute, strongly scabrous along the keel; lemma c. three-quarters as long as spikelet, rather strongly constricted above midway, prominently 3–5-nerved, strongly scabrous below midway and along the nerves, shortly 4-toothed at apex, awned from about midway; awn as long as or longer than lemma, twisted in lower part; callus hairs to c. 0.8 mm long; rachilla bristle not produced. Flowering between November and December.
Fruit type:
Pale brown compact long fruit-spike.
Seed type:
Yellow-brown grain to 2 mm long and 0.5 mm wide.
Embryo type:
Lateral.
Seed collecting:
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.
Seed cleaning:
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.
Seed viability:
From one collection, the seed viability was high, at 90%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA19000 (7.58 g)5026-Dec-2007RJB76675
Southern Lofty
19-Sep-200890%+5°C, -18°C
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.