Seeds of South Australia
Pomaderris paniculosa ssp. paniculosa (Rhamnaceae)
Inland Pomaderris
List of species for Pomaderris
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Seed collecting:
December to February
Herbarium regions:
Flinders Ranges, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
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
IBRA regions
SUMMARY
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))
IBRA regions
DISPLAY ALL
4 of 4 subregionsNaracoorte Coastal PlainLeast Concern
, Near Threatened
, Rare
2 of 2 subregionsKanmantooLeast Concern
, Near Threatened
4 of 6 subregionsFlinders Lofty BlockLeast Concern
, Near Threatened
, Vulnerable
5 of 5 subregionsEyre Yorke BlockLeast Concern
2 of 6 subregionsMurray Darling DepressionLeast Concern
, Near Threatened
Gawler Volcanics (GAW02)GawlerRare
  (IUCN: RA d(i,ii))
Yalata (NUL03)NullarborRare
  (IUCN: RA d(i,ii))
RSCA map:
Regional Species Conservation Assessments per IBRA subregion. Please click the thumbnail map.
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Pomaderris]
Name derivation:
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:
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.
Status:
Native. Common in South Australia. rare in the other states.
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.
Fruit type:
Brown papery capsule.
Seed type:
Brown ovoid seed to 2.5 mm long and 1.5 mm wide.
Embryo type:
Spatulate fully developed.
Seed collecting:
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.
Seed cleaning:
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.
Seed viability:
From one collection, the seed viability was high, at 100%.
Seed germination:
This species has dormancy that can be overcome with hot water treatment for the seeds to germinate.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
20566
20566
3318-Dec-2003PJA 70
Murray
1-Sep-2004100%+5°C, -18°C
DJD17011-Jan-2012-18°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:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
Jul-0489%19 d33 d 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-1578%20 d35 d boiling water 30 s;
1% agar;
Incubated under winter conditions
Jan-1538%20 dNA dry heat 120°C oven 5 min;
1% agar;
Incubated under winter conditions
Jan-1536%28 dNA boiling water 30 s;
1% agar;
Incubated under spring/autumn conditions
Jan-1534%28 dNA dry heat 120°C oven 5 min;
1% agar;
Incubated under spring/autumn conditions
Jan-156%20 dNA leached in water 3 d;
1% agar;
Incubated under winter conditions
Jan-154%62 dNA leached in water 3 d;
1% agar;
Incubated under spring/autumn conditions
Jan-154%35 dNA
1% agar;
Incubated under winter conditions
Jul-044%22 dNA 20% hydrogen peroxide 10 min, water rinse;
filter paper over moist sponge;
14/10;  /  10°C/18°C
Jan-150%NANA
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)