Seeds of South Australia
Bergia trimera (Elatinaceae)
Three-parts Water-fire
List of species for Bergia
Display more images
Click on an image to enlarge it
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
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
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.
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.
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:
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)
of plants
Collection number
Collection location
% ViabilityStorage
249700 (8.99 g)
249700 (8.99 g)
Lake Eyre
BGA200000 (8.55 g)20+12-Aug-2010DJD1840
Lake Eyre
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.