Regional Species Conservation Assessments per IBRA subregion.


Least concern
Near threatened
Rare
Vulnerable
Endangered
Critically endangered
Extinct
Data deficient
Adelaide
Arkaroola
Ceduna
Coober Pedy
Hawker
Innamincka
Marla
Marree
Mount Gambier
Oodnadatta
Renmark
Wudinna
Keith
Yunta
Display IBRA region text
Northern Flinders (FLB05) | Flinders Lofty Block | Rare (IUCN: RA d(ii)) [edge of range, limited habitat] |
Kintore (GVD04) | Great Victoria Desert | Least Concern |
Curnamona (BHC06) | Broken Hill Complex | Least Concern (Probable Increase) |
Dieri (SSD03) | Simpson Strzelecki Dunefields | Least Concern |
Warriner (SSD04) | | Least Concern |
Strzelecki Desert (SSD05) | | Least Concern |
Breakaways (STP01) | Stony Plains | Near Threatened [limited habitat] |
Oodnadatta (STP02) | | Least Concern |
Murnpeowie (STP03) | | Least Concern |
Macumba (STP05) | | Least Concern |
Witjira (STP06) | | Least Concern |
Baltana (STP07) | | Least Concern |
Sturt Stony Desert (CHC02) | Channel Country | Least Concern |
Diamantina-Eyre (CHC04) | | Least Concern |
Coongie (CHC06) | | Least Concern |
Lake Pure (CHC07) | | Least Concern |
Mann-Musgrave Block (CER01) | Central Ranges | Least Concern |
Everard Block (CER03) | | Least Concern |
Tieyon (FIN03) | Finke | Least Concern |
Northern Flinders (FLB05) | Flinders Lofty Block | Rare (IUCN: RA d(ii)) [edge of range, limited habitat] |
Kintore (GVD04) | Great Victoria Desert | Least Concern |
Curnamona (BHC06) | Broken Hill Complex | Least Concern (Probable Increase) |
3 of 4 subregions | Simpson Strzelecki Dunefields | Least Concern |
6 of 7 subregions | Stony Plains | Least Concern , Near Threatened |
4 of 4 subregions | Channel Country | Least Concern |
2 of 3 subregions | Central Ranges | Least Concern |
Tieyon (FIN03) | Finke | Least Concern |
Etymology
Atriplex from the Latin 'atriplexum' meaning an orach, a saltbush; an Ancient Latin name for this plant. Nummularia from the Latin 'nummularius' meaning an officer in the mint who tested silver before it was coined and/or 'numus' a silver coin, referring to the round silvery leaves.
Distribution and status
Found throughout much of the drier regions of South Australia on heavy soils or flood plains. Also found in Northern Territory, Queensland, New South Wales and Victoria. Native. Common in South Australia. Common in other states.
Herbarium regions: North Western, Lake Eyre, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula
NRM regions: Alinytjara Wilurara, Eyre Peninsula, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin
AVH map: SA distribution map (external link)
Plant description
Perennial shrub to 3m high, predominantly dioecious, with lower branches decumbent. Leaves broad-elliptic with the lamina to 35cm long and 4cm wide. Male and female flowers on separate plants. Inflorescences paniculate. Flowering all year round. Fruits are large pale-brown, papery fruit; orbicular with base truncate or cordate and valves appressed. Seeds are shiny brown, circular reniform seed to 2mm wide. Seed embryo type is peripheral
Seed collection and propagation
Collect seeds between January and December. Collect spongy dried fruit either directly from the bush or from the ground underneath. Place the fruits in a tray and leave to dry for one to two weeks. No cleaning is required if only the fruits are collected. The seed can be stored in the fruit or can be clean further. Rub the fruit gently by hand to dislodge the seeds. Use a sieve to separate the unwanted material. 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.
Germination table:
Display
Date | Result | T0 | T50 | Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod |
Mar-14 | 100% | 8 | 8 |
seeds excised from fruit; 1% agar; Incubated under spring/autumn conditions |
Mar-14 | 100% | 8 | 17 |
seeds excised from fruit; 1% agar; Incubated under winter conditions |
Mar-14 | 60% | 22 | 53 |
1% agar; Incubated under spring/autumn conditions |
Mar-14 | 44% | 29 | NA |
1% agar; 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.
Incubator conditions:
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)