Sand Daisy,
Tietken's Daisy
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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
| South Olary Plain (MDD01) | Murray Darling Depression | Rare (IUCN: RA d(i,ii)) (Probable Decline) [edge of range; ephemeral] |
| Murray Mallee (MDD02) | | Rare (IUCN: RA d(ii)) (Probable Decline) |
| Murray Scroll Belt (RIV06) | Riverina | Rare (IUCN: RA d(i,ii)) (Probable Decline) |
| Maralinga (GVD03) | Great Victoria Desert | Near Threatened [probably localised] |
| Kintore (GVD04) | | Least Concern |
| Tallaringa (GVD05) | | Least Concern |
| Yellabinna (GVD06) | | Rare (IUCN: RA d(ii)) (Probable Decline) [probably localised] |
| Nullarbor Plain (NUL02) | Nullarbor | Rare (IUCN: RA d(ii)) (Probable Decline) [probably localised] |
| Yalata (NUL03) | | Rare (IUCN: RA d(ii)) (Probable Decline) [probably localised] |
| Breakaways (STP01) | Stony Plains | Near Threatened [edge of range] |
| Oodnadatta (STP02) | | Rare (IUCN: RA d(ii)) |
| Witjira (STP06) | | Rare (IUCN: RA d(ii)) [edge of range] |
| Baltana (STP07) | | Rare (IUCN: RA d(ii)) [edge of range] |
| Mann-Musgrave Block (CER01) | Central Ranges | Least Concern |
| Watarru (CER02) | | Least Concern |
| Everard Block (CER03) | | Least Concern |
| Tieyon (FIN03) | Finke | Least Concern |
| Pedirka (FIN04) | | Least Concern |
| 2 of 6 subregions | Murray Darling Depression | Rare |
| Murray Scroll Belt (RIV06) | Riverina | Rare (IUCN: RA d(i,ii)) (Probable Decline) |
| 4 of 4 subregions | Great Victoria Desert | Least Concern , Near Threatened , Rare |
| 2 of 3 subregions | Nullarbor | Rare |
| 4 of 7 subregions | Stony Plains | Near Threatened , Rare |
| 3 of 3 subregions | Central Ranges | Least Concern |
| 2 of 2 subregions | Finke | Least Concern |
Botanical art
Kath Alcock paintings: 2
Prior names
Argyrocome tietkensii
Helipterum tietkensii
Common names
Sand Daisy
Tietken's Daisy
Distribution and status
Herbarium regions: North Western, Lake Eyre, Nullarbor, Eyre Peninsula, Murray
AVH map: SA distribution map (external link)
| Location | No. of seeds
(weight grams) | Number
of plants | Date
collected | Collection number
Collection location | Date
stored | % Viability | Storage
temperature | | BGA | 7,400 (1.36 g) | | 30-Oct-2013 | DJD2789
North Western | 1-Jan-2016 | 100% | -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.
Germination table:
Display
| Date | Result | T0 | T50 | Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod |
| Oct-15 | 78% | 7 | 7 |
500 mg/L gibberellic acid 48 h;
1% agar;
Incubated under spring/autumn conditions |
| Oct-15 | 50% | 7 | 14 |
500 mg/L gibberellic acid 48 h;
1% agar;
Incubated under winter conditions |
| Oct-15 | 30% | 7 | NA |
1% agar;
Incubated under spring/autumn conditions |
| Oct-15 | 10% | 7 | 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)
