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Regional Species Conservation Assessments per IBRA subregion.
Display IBRA region text
|Mount Gambier (SVP02)||Southern Volcanic Plain|| Near Threatened [undercollected, annual]|
|Bridgewater (NCP01)||Naracoorte Coastal Plain|| Least Concern [undercollected, annual]|
|Glenelg Plain (NCP02)|| || Near Threatened [undercollected, annual]|
|Lucindale (NCP03)|| || Least Concern|
|Tintinara (NCP04)|| || Least Concern|
|Kangaroo Island (KAN01)||Kanmantoo|| Least Concern|
|Fleurieu (KAN02)|| || Near Threatened|
|Mount Lofty Ranges (FLB01)||Flinders Lofty Block|| Near Threatened|
|Broughton (FLB02)|| || Least Concern|
|Southern Flinders (FLB04)|| || Least Concern|
|Southern Yorke (EYB01)||Eyre Yorke Block|| Least Concern|
|St Vincent (EYB02)|| || Vulnerable (IUCN: VU B2ab(i,ii,iii)) (Probable Decline)|
|Eyre Hills (EYB03)|| || Least Concern|
|Talia (EYB04)|| || Least Concern|
|Eyre Mallee (EYB05)|| || Rare (IUCN: RA d(ii))|
|Murray Mallee (MDD02)||Murray Darling Depression|| Rare (IUCN: RA bd(ii)) (Probable Decline) [restricted habitat]|
|Murray Lakes and Coorong (MDD03)|| || Near Threatened [poss. undercollected ]|
|Wimmera (MDD05)|| || Rare (IUCN: RA d(i,ii))|
|Myall Plains (GAW01)||Gawler|| Rare (IUCN: RA d(i,ii)) [woodland, rocky areas]|
|Gawler Volcanics (GAW02)|| || Rare (IUCN: RA d(i,ii)) [no records]|
|Bimbowrie (BHC05)||Broken Hill Complex|| Vulnerable (IUCN: VU B2ab(i,ii,iii)) (Probable Decline)|
|Mount Gambier (SVP02)||Southern Volcanic Plain||Near Threatened [undercollected, annual]|
|4 of 4 subregions||Naracoorte Coastal Plain||Least Concern , Near Threatened
|2 of 2 subregions||Kanmantoo||Least Concern , Near Threatened
|3 of 6 subregions||Flinders Lofty Block||Least Concern , Near Threatened
|5 of 5 subregions||Eyre Yorke Block||Least Concern , Rare , Vulnerable
|3 of 6 subregions||Murray Darling Depression||Near Threatened , Rare
|2 of 8 subregions||Gawler||Rare
|Bimbowrie (BHC05)||Broken Hill Complex||Vulnerable (IUCN: VU B2ab(i,ii,iii)) (Probable Decline)|
Kath Alcock paintings: 4
Sebaea named after Albertus Seba (1665-1736), a Dutch apothecary and botanist. Ovata from Latin meaning egg-shaped; referring to the shape of the leaves.
Distribution and status
Found in the southern part of South Australia, growing in woodland and shrubland on seasonally wet, sandy or gravelly soils, but also in drier, recently burnt sites. Also found in Western Australia, Queensland, New South Wales, Victoria and Tasmania. Native. Common in South Australia. Rare in Queensland. Common in the other states.
Herbarium regions: Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern, Green Adelaide
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
AVH map: SA distribution map (external link)
Erect annual herb to 30 cm high, stem usually simple below inflorescence. Leaves broadly ovate, to 12 mm long and 10 mm wide. Inflorescence in sparse to mid-dense terminal clusters with tubular, yellow flowers. Flowering between September and November. Fruits are brown ovoid septicidal capsule releasing seeds only through the apex. Seeds are small black diamond-shaped seed to 0.4 mm long and 0.3 mm wide, with deep wrinkles and mesh-like surface. Seed embryo type is spatulate under-developed.
Seed collection and propagation
Collect seeds between October and December. Collect mature capsules as they dry off and turn brown. They should contain hard brown seeds inside. Place the capsules in a tray for a week. Then rub the capsules with your fingers to dislodge all the seeds. Use a sieve to separate 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. From two collections, the seed viability were high, at 100%.
|Location||No. of seeds|
19,000 (0.36 g)
7,000 (0.24 g)
|BGA||6,500 (0.065 g)||100+||2-Nov-2015||DJD3208|
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.
|Date||Result||T0||T50||Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod|
||500 mg/L gibberellic acid 20 h;|
Incubated under spring/autumn conditions
||500 mg/L gibberellic acid 20 h;|
Incubated under winter conditions
Result: Maximum percentage of germination observed.
T0: Number of days before first germinant observed.
T50: Number of days to achieve 50% germination.
Pre-treatment: The initial treatment that the seeds received prior to placement on germination media.
Germination medium: The substrate that seeds were placed on for the duration of the germination experiment.
Photoperiod: The duration of light exposure that the seeds were subject to during a 24 hour period.
Thermoperiod: The constant or diurnal temperatures that seeds were subject to during a 24 hour period.
Winter conditions: 15°C 20 h (3am→11pm); 5°C 4 h (11pm→3am) / 10 h light (8am→6pm); 14 h dark (6pm→8am)
Spring/Autumn conditions: 22°C 12 h (8am→8pm); 10°C 12 h (8pm→8am) / 12 h light (8am→8pm); 12 h dark (8pm→8am)
Summer conditions: 30°C 14 h (6am→8pm); 15°C 10 h (8pm→6am) / 14 h light (6am→8pm); 10 h dark (8pm→6am)