Large-head New Holland Daisy,
Giant New Holland 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
| Lucindale (NCP03) | Naracoorte Coastal Plain | Vulnerable (IUCN: VU D2) (Probable Decline) [highly localised, Desert Camp] |
| Tintinara (NCP04) | | Vulnerable (IUCN: VU D2) |
| Fleurieu (KAN02) | Kanmantoo | Near Threatened [mostly on eastern edge] |
| Mount Lofty Ranges (FLB01) | Flinders Lofty Block | Rare (IUCN: RA d(ii)) [weeds a threat] |
| Broughton (FLB02) | | Least Concern |
| Olary Spur (FLB03) | | Least Concern [edge of range] |
| Southern Flinders (FLB04) | | Least Concern [edge of range] |
| Southern Yorke (EYB01) | Eyre Yorke Block | Least Concern (Probable Decline) |
| St Vincent (EYB02) | | Least Concern |
| Eyre Hills (EYB03) | | Rare (IUCN: RA d(ii)) (Probable Decline) |
| Talia (EYB04) | | Least Concern |
| Eyre Mallee (EYB05) | | Least Concern |
| South Olary Plain (MDD01) | Murray Darling Depression | Rare (IUCN: RA d(i,ii)) [edge of range] |
| Murray Mallee (MDD02) | | Least Concern |
| Murray Lakes and Coorong (MDD03) | | Rare (IUCN: RA d(ii)) (Probable Decline) [distinctive spp.] |
| Murray Scroll Belt (RIV06) | Riverina | Least Concern [only on cliffs; limited habitat] |
| Yalata (NUL03) | Nullarbor | Rare (IUCN: RA d(ii)) |
| 2 of 4 subregions | Naracoorte Coastal Plain | Vulnerable |
| Fleurieu (KAN02) | Kanmantoo | Near Threatened [mostly on eastern edge] |
| 4 of 6 subregions | Flinders Lofty Block | Least Concern , Rare |
| 5 of 5 subregions | Eyre Yorke Block | Least Concern , Rare |
| 3 of 6 subregions | Murray Darling Depression | Least Concern , Rare |
| Murray Scroll Belt (RIV06) | Riverina | Least Concern [only on cliffs; limited habitat] |
| Yalata (NUL03) | Nullarbor | Rare (IUCN: RA d(ii)) |
Botanical art
Kath Alcock paintings: 5
Prior names
Vittadinia australis var. megacephala
Common names
Large-head New Holland Daisy
Giant New Holland Daisy
Distribution and status
Herbarium regions: Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Green Adelaide
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 |
MSB |
1,900 (3.95 g) | | 27-Oct-2005 | DJD156
Southern Lofty | | | |
| BGA | 13,000 (24.08 g) | 50 | 24-Oct-2007 | RJB75059
Northern Lofty | 19-Sep-2008 | 85% | -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-13 | 82% | 7 | 7 |
1% agar with 250 mg/L gibberellic acid (pH 6.5);
Incubated under winter conditions |
| Oct-13 | 78% | 7 | 7 |
1% agar;
Incubated under winter conditions |
| Oct-13 | 76% | 7 | 7 |
1% agar;
Incubated under spring/autumn conditions |
| Oct-13 | 58% | 7 | 7 |
1% agar with 250 mg/L gibberellic acid (pH 6.5);
Incubated under spring/autumn conditions |
| Oct-13 | 56% | 7 | 14 |
1% agar with 250 mg/L gibberellic acid (pH 6.5);
Incubated under summer conditions |
| Oct-13 | 48% | 7 | NA |
1% agar;
Incubated under summer 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)
