Seeds of South Australia
Bergia pedicellaris (Elatinaceae)
Long Stalk Water-fire
List of species for Bergia
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Seed collecting:
May to July
Herbarium region:
Lake Eyre
NRM region:
South Australian Arid Lands
IBRA regions
Strzelecki Desert (SSD05)Simpson Strzelecki Dunefields
 Near Threatened   [flood sp]
Sturt Stony Desert (CHC02)Channel Country
 Near Threatened   [flood sp]
Coongie (CHC06) 
 Near Threatened   [(no records), flood sp]
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. Pedicellaris means with little pedicels; referring to the prominent long pedicels of this species.
Few records from the north-east corner of South Australia, growing on cracking clay soils, rarely on alluvial sandy soils. Also found in Western Australia, Northern Territory and Queensland.
Native. Uncommon in South Australia. Common in other states.
Plant description:
Spreading or erect annual herb to 30 cm high. Leaves elliptic to narrow-elliptic, to 35 mm long and 11 mm wide, acute, glandular hairy on midvein and at base, margin serrate, mid-vein prominent. Flowers single or paired, green or pink. Bracteoles at base of pedicels, narrow-triangular, to 1 mm long and 0.1 mm wide. Sepals 5, ovate, to 3.5 mm long and 1.5 mm wide, acuminate, glandular-pubescent, margin with a fringe. 
Fruit type:
Brown globular capsule to 3.5 mm diameter.
Seed type:
Slightly curved, brown, ovoid seed to 0.5mm long with a smooth and shiny surface.
Embryo type:
Seed collecting:
Collect whole plant with maturing capsules, those turning brown 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 one collection, the seed viability was average, at 65%.
Seeds stored:
LocationNo. of seeds
(weight grams)
of plants
Collection number
Collection location
% ViabilityStorage
60000 (0.22 g)
60000 (0.22 g)
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.