Inland Pomaderris,
Mallee Pomaderris
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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
Bridgewater (NCP01) | Naracoorte Coastal Plain | Least Concern |
Glenelg Plain (NCP02) | | Rare (IUCN: RA d(i,ii)) |
Lucindale (NCP03) | | Near Threatened |
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 |
Northern Flinders (FLB05) | | Vulnerable (IUCN: VU B2ab(i,ii,iii); D2) (Probable Decline) [grazing pressure a threat] |
Southern Yorke (EYB01) | Eyre Yorke Block | Least Concern |
St Vincent (EYB02) | | Least Concern |
Eyre Hills (EYB03) | | Least Concern |
Talia (EYB04) | | Least Concern |
Eyre Mallee (EYB05) | | Least Concern |
Murray Mallee (MDD02) | Murray Darling Depression | Near Threatened |
Murray Lakes and Coorong (MDD03) | | Least Concern |
Gawler Volcanics (GAW02) | Gawler | Rare (IUCN: RA d(i,ii)) |
Yalata (NUL03) | Nullarbor | Rare (IUCN: RA d(i,ii)) |
4 of 4 subregions | Naracoorte Coastal Plain | Least Concern , Near Threatened , Rare |
2 of 2 subregions | Kanmantoo | Least Concern , Near Threatened |
4 of 6 subregions | Flinders Lofty Block | Least Concern , Near Threatened , Vulnerable |
5 of 5 subregions | Eyre Yorke Block | Least Concern |
2 of 6 subregions | Murray Darling Depression | Least Concern , Near Threatened |
Gawler Volcanics (GAW02) | Gawler | Rare (IUCN: RA d(i,ii)) |
Yalata (NUL03) | Nullarbor | Rare (IUCN: RA d(i,ii)) |
Botanical art
Kath Alcock paintings: 3
Prior names
Pomaderris oraria, partly
Common names
Inland Pomaderris
Mallee Pomaderris
Etymology
Pomaderris from the Greek 'psma' meaning a lid and 'derris' meaning skin; referring to the membranous valve by which the fruitlets of many species open. Paniculosa from Latin referring to the flower clustered in panicle.
Distribution and status
Found in the southern part of South Australia, growing in a wide range of habitats especially common on limestone. Also found in Western Australia, New South Wales and Victoria. Native. Common in South Australia. rare in the other states.
Herbarium regions: Flinders Ranges, 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)
Plant description
Perennial shrub to 50 cm high. Leaves to 2 cm long and 15 mm wide, ovate to broad- elliptic, margins crenate, often with a whitish border, upper surface glabrous, lower surface tomentose often with rusty stellate hairs. Inflorescence a loose panicle with clusters of yellow flowers, sepals persistant in fruit, petals absent. Flowering between August and November. Fruits are brown papery capsule. Seeds are brown ovoid seed to 2.5 mm long and 1.5 mm wide. Seed embryo type is spatulate fully developed.
Seed collection and propagation
Collect seeds between December and February. Collect fruit heads that are darkening and have a fluffy appearance. Rub the flower parts in your palm to see if there is any seed, which should be brown and hard. Place the heads in a tray and leave to dry for a week. Then rub the heads with your hands or a rubber bung 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. From one collection, the seed viability was high, at 100%. This species has dormancy that can be overcome with hot water treatment for the seeds to germinate.
Location | No. of seeds (weight grams) | Number of plants | Date collected | Collection number Collection location | Date stored | % Viability | Storage temperature | BGA MSB | 20,500 (33.8 g) 20,500 (33.8 g) | 33 | 18-Dec-2003 | PJA70 Murray | 1-Sep-2004 | 100% | +5°C, -18°C |
BGA MSB | 4,000 (3.34 g) 4,000 (3.34 g) | 50+ | 25-Nov-2009 | DJD1701 Eyre Peninsula | 1-Jan-2012 | 95% | -18°C |
BGA | 5,800 (6.48 g) | | 10-Dec-2014 | D101214MU | 1-Jan-2016 | 95% | -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 |
Jul-04 | 89% | 19 | 33 |
hot water (90°C) 10 min, 20% hydrogen peroxide 10 min, water rinse; filter paper over moist sponge; 14/10; / 10°C/18°C |
Jan-15 | 78% | 20 | 35 |
boiling water 30 s; 1% agar; Incubated under winter conditions |
Jan-15 | 38% | 20 | NA |
dry heat 120°C oven 5 min; 1% agar; Incubated under winter conditions |
Jan-15 | 36% | 28 | NA |
boiling water 30 s; 1% agar; Incubated under spring/autumn conditions |
Jan-15 | 34% | 28 | NA |
dry heat 120°C oven 5 min; 1% agar; Incubated under spring/autumn conditions |
Jan-15 | 6% | 20 | NA |
leached in water 3 d; 1% agar; Incubated under winter conditions |
Jan-15 | 4% | 62 | NA |
leached in water 3 d; 1% agar; Incubated under spring/autumn conditions |
Jan-15 | 4% | 35 | NA |
1% agar; Incubated under winter conditions |
Jul-04 | 4% | 22 | NA |
20% hydrogen peroxide 10 min, water rinse; filter paper over moist sponge; 14/10; / 10°C/18°C |
Jan-15 | 0% | NA | 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)