Seeds of South Australia
Bossiaea peninsularis (Leguminosae)
Eyre Peninsula Bossiaea
List of species for Bossiaea
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Seed collecting:
November to December
Herbarium region:
Eyre Peninsula
NRM region:
Eyre Peninsula
IBRA region
Eyre Hills (EYB03)Eyre Yorke Block
 Endangered   (IUCN: EN B2ab(iii,v))   (Probable Decline)   [Taxonomy has been changed, only on roadsides, needs more survey work]
Talia (EYB04) 
 Rare   (IUCN: RA d(i,ii))   [needs more survey work]
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 Bossiaea]
Name derivation:
Bossiaea named after Joseph Hugues Boissieu (de) La Martiniere (1758-1788), a French physician, biologist and botanist. Peninsularis means of or from a peninsula; referring to Eyre Peninsula where the species is found.
Distribution:
Endemic to South Australia and found on roadside in a very small area on the Eyre Peninsula, growing on sandy soils surrounding salt marshes and lakes in mallee woodland.
Status:
Native. Very rare in South Australia.
Plant description:
Erect rhizomatous leafless shrubs to 1 m high, stems flattened with wing-like organ to 14 mm wide. Inflorescence orange and red pea flowers. Flowering between August and October usually in good season.
Fruit type:
Reddish brown flatten oblong pod.
Seed type:
Mottled brown, reniform seed to 3 mm long and 2 mm wide, with a curved pale yellow aril on one side.
Embryo type:
Bent.
Seed collecting:
Collect mature pods, those drying off, turning brown and contain dark hard seeds inside. Pods with viable seeds are produced sporadically and depend on good rainfall. Not all plants will set seeds.
Seed cleaning:
Place the pods in a tray and leave to dry for 1 to 2 weeks. Then rub the pods gently with a rubber bung to dislodge the seeds. Use a sieve to separate the seeds from 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 90%.
Seed germination:
This species has physical dormancy that needs to be overcome for the seed to germinate (e.g. nicking or softening the seed coat).
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
1000 (3.53 g)
1000 (3.51 g)
30+13-Nov-2012MJT403
Eyre Peninsula
27-Feb-201490% (Xray 90%)-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
April 201378%7d14d Nick seed coat with scalpel blade
1% water 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)