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 | Data Deficient [could be squarrosus] |
| Tintinara (NCP04) | | Vulnerable (IUCN: VU D2) [localised in Messent & Gum Lagoon; P Lang - could be Rare] |
| Broughton (FLB02) | Flinders Lofty Block | Critically Endangered (IUCN: CR D) (Probable Decline) [Clare record unreliable. Population near Tarcowie on roadside. Less than 50 plants.] |
| Southern Yorke (EYB01) | Eyre Yorke Block | Endangered (IUCN: EN D) (Probable Decline) [prone to grazing, habitat specific] |
| Murray Lakes and Coorong (MDD03) | Murray Darling Depression | Vulnerable (IUCN: VU B2ab(i,ii,iii); D2) (Probable Decline) [some taxo issues; responds to fire & rain] |
Etymology
Lanin 'senex' an old man, refers to the white pappus and Greek 'macros' large, 'carpos' fruit
Distribution and status
Occuring in a variety of habitats including grasslands, sedgelands, shrublands and woodlands. Often in depressions that are waterlogged in winter, on sandy loam to heavy clay soils. Vulnerable in South Australia
Herbarium regions: Flinders Ranges, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, South Eastern, Green Adelaide
NRM regions: Adelaide and Mount Lofty Ranges, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
AVH map: SA distribution map (external link)
Plant description
Perennial herb 20-70cm high. Leaves alternate, linear, 10cm long, 2-5mm wide, grey-green, covered with fine hairs. Inflorescence a cyme with 2-10 capitula 18mm x 20mm. Up to 150 yellow florets, surrounded by linear, pointed bracts. Flowering September - October. Fruits are achenes 4.5-5 rarely 6 mm long, brown, rostrate, covered in very short, greyish hairs; pappus deciduous, dimorphic.
| Location | No. of seeds
(weight grams) | Number
of plants | Date
collected | Collection number
Collection location | Date
stored | % Viability | Storage
temperature | BGA
MSB | 13,000 (6.4 g)
13,000 (6.4 g) | 100+ | 12-Oct-2005 | DJD141
South Eastern | 14-Sep-2006 | 90% | +5°C, -18°C |
| BGA | 21,700 (6.24 g) | 50 | 18-Sep-2007 | RJB74668
South Eastern | 19-Sep-2008 | 100% | +5°C, -18°C |
| BGA | 8,350 (2.58 g) | 50+ | 15-Sep-2011 | DJD2242
South Eastern | 1-Nov-2012 | 44% | -18°C |
| BGA | 5,240 (25.62 g) | | 1-Oct-2013 | KHB306
Flinders Ranges | 24-Mar-2015 | 95% | +5°C, -18°C |
| BGA | 12,145 (5.83 g) | | 1-Oct-2014 | KHB306
Flinders Ranges | 1-Jan-2016 | 95% | -18°C |
| BGA | 15,000 (8.86 g) | 9 | 1-Oct-2018 | KHB306
Flinders Ranges | 24-Apr-2019 | 80% | -18°C, -80°C |
| BGA | 68,600 (34.13 g) | 50+ | 25-Sep-2018 | JRG689
South Eastern | 24-Apr-2019 | 85% | -18°C, -80°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 |
| Jun-12 | 60% | 8 | 18 |
1% agar with 250 mg/L gibberellic acid (pH 6.5);
Incubated under winter conditions |
| Jun-12 | 54% | 8 | 18 |
1% agar with 100 mg/L potassium nitrate;
Incubated under winter conditions |
| Jun-12 | 48% | 8 | NA |
1% agar;
Incubated under winter conditions |
| Jun-12 | 44% | 8 | NA |
1% agar with 250 mg/L gibberellic acid (pH 6.5);
Incubated under spring/autumn conditions |
| Jun-12 | 38% | 8 | NA |
1% agar with 100 mg/L potassium nitrate;
Incubated under spring/autumn conditions |
| Jun-12 | 22% | 6 | NA |
1% agar;
Incubated under spring/autumn 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)
