Seeds of South Australia
Bergia trimera (Elatinaceae)
Three-parts Water-fire
List of species for Bergia
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Seed collecting:
January to December
Herbarium regions:
North Western, Lake Eyre, Gairdner-Torrens, Eastern, Eyre Peninsula, Murray
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Central Flinders (FLB06)Flinders Lofty Block
 Rare   (IUCN: RA d(i,ii))   [comes & goes]
Murray Mallee (MDD02)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   [undercollected; comes up after floods]
Murray Scroll Belt (RIV06)Riverina
 Rare   (IUCN: RA d(ii))
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(ii))
Gawler Lakes (GAW03) 
 Rare   (IUCN: RA d(ii))
Kingoonya (GAW05) 
 Rare   (IUCN: RA d(ii))
Roxby (GAW07) 
 Least Concern   [comes & goes]
Curnamona (BHC06)Broken Hill Complex
 Rare   (IUCN: RA d(i,ii))   [northern species]
Warriner (SSD04)Simpson Strzelecki Dunefields
 Least Concern   [comes & goes]
Strzelecki Desert (SSD05) 
 Least Concern   [comes & goes]
Breakaways (STP01)Stony Plains
 Least Concern   [comes & goes]
Oodnadatta (STP02) 
 Near Threatened   [comes & goes]
Murnpeowie (STP03) 
 Least Concern   [comes & goes]
Witjira (STP06) 
 Least Concern   [comes & goes]
Baltana (STP07) 
 Near Threatened   [comes & goes]
Sturt Stony Desert (CHC02)Channel Country
 Least Concern   [comes & goes]
Diamantina-Eyre (CHC04) 
 Least Concern   [comes & goes]
Coongie (CHC06) 
 Least Concern   [comes & goes]
Lake Pure (CHC07) 
 Least Concern   [comes & goes]
Mann-Musgrave Block (CER01)Central Ranges
 Least Concern   [comes & goes]
Tieyon (FIN03)Finke
 Least Concern   [comes & goes]
IBRA regions
DISPLAY ALL
Central Flinders (FLB06)Flinders Lofty BlockRare
  (IUCN: RA d(i,ii))   [comes & goes]
Murray Mallee (MDD02)Murray Darling DepressionRare
  (IUCN: RA d(i,ii))   [undercollected; comes up after floods]
Murray Scroll Belt (RIV06)RiverinaRare
  (IUCN: RA d(ii))
4 of 8 subregionsGawlerLeast Concern
, Rare
Curnamona (BHC06)Broken Hill ComplexRare
  (IUCN: RA d(i,ii))   [northern species]
2 of 4 subregionsSimpson Strzelecki DunefieldsLeast Concern
5 of 7 subregionsStony PlainsLeast Concern
, Near Threatened
4 of 4 subregionsChannel CountryLeast Concern
Mann-Musgrave Block (CER01)Central RangesLeast Concern
  [comes & goes]
Tieyon (FIN03)FinkeLeast Concern
  [comes & goes]
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 Bergia]
Name derivation:
Bergia named after Dr Petter Jonas Bergius (1730-90), Swedish physician and botanist. Trimera from the Greek 'treis' meaning three and 'merus' meaning part; referring to the predominantly 3-merous flowers, a distinguishing feature from the closely related Bergia ammannioides.
Distribution:
Found in the Eastern, Gairdner-Torrens, Lake Eyre Basin and North-western regions of South Australia, in sand, loam or clay soils, often saline. Also found in all other mainland states.
Status:
Native. Common in South Australia. Common in other states.
Plant description:
Prostrate or erect annual herb to 15 cm. Leaves narrow-obovate to narrow-elliptic, to 30 mm long and 8 mm wide, acute, glabrous, margin serrate. Flowers pink with 3-4 petals in dense clusters. Flowering throughout the year.
Fruit type:
Purple red globular capsule to 1.2 mm diameter.
Seed type:
Red brown ovoid to reniform seed to 0.5mm long, with a net-like surface.
Embryo type:
Linear.
Seed collecting:
Collect whole plant with maturing capsules, those turning purple red and contain brown seeds.
Seed cleaning:
Place the plant in a tray and leave to dry for one to two weeks. Then rub the plant especially the capsules gently by hand to dislodge the seeds. Use a fine sieve to separate the unwanted material. Be very careful as the seeds are very small. The seeds are shiny brown. 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 two collections, the seed viability were high, ranging from 95% and 100%.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
249700 (8.99 g)
249700 (8.99 g)
50+29-Sep-2007DJD889
Lake Eyre
19-Sep-2008100%-18°C
BGA200000 (8.55 g)20+12-Aug-2010DJD1840
Lake Eyre
1-Jan-201295%-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.