Seeds of South Australia
Westringia dampieri (Labiatae)
Shore Rosemary
List of species for Westringia
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Seed collecting:
September to November
Herbarium regions:
Eyre Peninsula, Kangaroo Island
NRM regions:
Eyre Peninsula, Kangaroo Island
IBRA regions
Kangaroo Island (KAN01)Kanmantoo
 Regionally Extinct   [1 old record from Kingscote; presumed extinct]
Eyre Hills (EYB03)Eyre Yorke Block
 Near Threatened   (Probable Decline)
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
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 Westringia]
Name derivation:
Westringia named after Dr Johan Peter Westring (1753-1783), a Swedish physician and writer on lichens. Dampieri named after William Dampier (1651-1715), 18th century englishman who collected Australian plants which are still preserved in the British Museum at Oxford.
Found along the west coast of the Eyre Peninsula in South Australia, growing in coastal situations on beach sands, sand dunes or limestone cliffs, and on small off-shore islands. Also found in Western Australia.
Native. Uncommon in South Australia. Common in Western Australia.
Plant description:
Dense shrubs to 1.3 m high with triangular to quadrangular or subterete branches, smooth and covered in dense hairs. Leaves in whorls of 3 or 4 rarely 5, narrowly ovate to narrowly oblong to linear, to 40 mm lonh and 3 mm wide, base cuneate, margin entire and recurved, densely hairy. Flowers tubular, white with purple, red, yellow and/or brown dots surface of tube and mouth, or pale-purple, pale-mauve to lilac with dots absent. Flowering throughout the year.
Fruit type:
Dark brown woody capsule to 2.5 mm long, with four segments.
Seed type:
Brown ovoid seed to 3 mm long and 2 mm wide, with a large plug on one side.
Embryo type:
Spatulate fully developed.
Seed collecting:
Collect capsules that are fat and turning brown. A lot of time will be required to collect sufficient amount of seeds.
Seed cleaning:
Place the capsules in a tray and leave to dry for one to two weeks. Then rub the capsules gently with 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:
Seed viability tend to be very low in this species and good seed set will depend on good season. From one collection, the seed viability was low, at 35%.
Seed germination:
This species has physiological dormancy that needs to be overcome for the seed to germinate.
Germination table:
DateResultT0T50Pre-treatment | Germination medium | Incubator: Photoperiod / Thermoperiod
Aug-1570%7 d14 d
1% agar;
Incubated under spring/autumn conditions
Aug-1526%14 dNA 30% hydrogen peroxide 10 min, water rinse;
1% agar;
Incubated under spring/autumn conditions
Aug-1523%7 dNA 500 mg/L gibberellic acid 48 h;
1% agar;
Incubated under spring/autumn conditions
Aug-153%42 dNA 30% hydrogen peroxide 10 min, dry heat 80°C oven 10 min, 10% smoke water 24 h;
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)