Seeds of South Australia
Hyalosperma demissum (Compositae)
Moss Sunray
List of species for Hyalosperma
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Seed collecting:
October to December
Herbarium regions:
Gairdner-Torrens, Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
IBRA regions
Bridgewater (NCP01)Naracoorte Coastal Plain
 Near Threatened
Glenelg Plain (NCP02) 
 Rare   (IUCN: RA d(ii))
Lucindale (NCP03) 
 Least Concern
Tintinara (NCP04) 
 Least Concern
Kangaroo Island (KAN01)Kanmantoo
 Near Threatened   [fire responsive; 1 pop within a reserve]
Fleurieu (KAN02) 
 Least Concern   [fire responsive]
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Least Concern   [fire responsive]
Broughton (FLB02) 
 Least Concern   [Grazing a threat]
Olary Spur (FLB03) 
 Least Concern   [Grazing a threat]
Southern Flinders (FLB04) 
 Least Concern   [Grazing a threat]
Northern Flinders (FLB05) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [disturbance, weeds - threats]
Central Flinders (FLB06) 
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [disturbance, weeds - threats]
Southern Yorke (EYB01)Eyre Yorke Block
 Least Concern   [Grazing a threat. Very small, probably more around. Stable.]
St Vincent (EYB02) 
 Near Threatened   [Grazing a threat. Data deficient, should be more records.]
Eyre Hills (EYB03) 
 Least Concern
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)   [edge of range]
Murray Lakes and Coorong (MDD03) 
 Near Threatened   (Probable Decline)   [grazing, weeds - threats]
Lowan Mallee (MDD04) 
 Rare   (IUCN: RA d(i,ii))   [edge of range]
Wimmera (MDD05) 
 Rare   (IUCN: RA d(i,ii))
Braemer (MDD07) 
 Least Concern   [Grazing a threat]
Myall Plains (GAW01)Gawler
 Least Concern
Gawler Volcanics (GAW02) 
 Least Concern
Yellabinna (GVD06)Great Victoria Desert
 Rare   (IUCN: RA d(ii))   [edge of range]
Yalata (NUL03)Nullarbor
 Rare   (IUCN: RA d(ii))   [edge of range]
Barrier Range (BHC01)Broken Hill Complex
 Least Concern   [Grazing a threat]
Barrier Range Outwash (BHC04) 
 Least Concern   [Grazing a threat]
Bimbowrie (BHC05) 
 Least Concern   [Grazing a threat]
Strzelecki Desert (SSD05)Simpson Strzelecki Dunefields
 Rare   (IUCN: RA d(i,ii))   [edge of range]
IBRA regions
4 of 4 subregionsNaracoorte Coastal PlainLeast Concern
, Near Threatened
, Rare
2 of 2 subregionsKanmantooLeast Concern
, Near Threatened
6 of 6 subregionsFlinders Lofty BlockLeast Concern
, Rare
5 of 5 subregionsEyre Yorke BlockLeast Concern
, Near Threatened
5 of 6 subregionsMurray Darling DepressionLeast Concern
, Near Threatened
, Rare
2 of 8 subregionsGawlerLeast Concern
Yellabinna (GVD06)Great Victoria DesertRare
  (IUCN: RA d(ii))   [edge of range]
Yalata (NUL03)NullarborRare
  (IUCN: RA d(ii))   [edge of range]
3 of 4 subregionsBroken Hill ComplexLeast Concern
Strzelecki Desert (SSD05)Simpson Strzelecki DunefieldsRare
  (IUCN: RA d(i,ii))   [edge of range]
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 Hyalosperma]
Name derivation:
Hyalosperma from the Greek 'hyalos' meaning glass and 'sperma' meaning a seed; refers to the transparent wing of the achenes. Demissum from the Latin 'demissus'  meaning drooping; referring to the species habit.
Found in the southern part of South Australia, growing on shallow soils in a variety of habitats, often on shallow or stony soils. Also found in Western Australia, New South Wales, Victoria and Tasmania.
Native. Common in South Australia. Rare in Tasmania. Common in the other states.
Plant description:
Annual prostrate herb to 2.5cm tall with glabrous stems. Leaves opposite each other on the stem to alternate, to 5 mm long and 1 mm wide, triangular in cross-section or flattened cylindrical channelled above, hairless or sparsely hairy, with smooth edges and a straight point. Flower-heads globular to cup-shaped to cylindrical, borne singly at the ends of the stems, surrounded by leaves with white or greenish yellow flowers with no petals. flowering between August and October.
Fruit type:
Dense brown head.
Seed type:
Light brown seed to 0.8 mm long and 0.4 mm wide, with a mesh-like surface.
Embryo type:
Seed collecting:
Collect heads or whole plants that are drying off and turning brown. Each head should have numerous tiny seeds.
Seed cleaning:
Place the heads in a tray for a week to dry. Then rub the heads gently with your hands to dislodge the seeds. Use a fine sieve to separate the seeds from the unwanted material. Be careful as the seeds are very small. 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%.
Seed germination:
Seeds are non-dormant, viable seed should germinate readily.
Seeds stored:
LocationNo. of seeds
(weight grams)
of plants
Collection number
Collection location
% ViabilityStorage
17300 (0.83 g)
17300 (0.83 g)
Southern Lofty
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.