Seeds of South Australia
Swainsona burkittii (Leguminosae)
Woolly Darling Pea
List of species for Swainsona
Display more images
Click on an image to enlarge it
Seed collecting:
November to January
Herbarium regions:
Flinders Ranges, Eastern
NRM region:
South Australian Arid Lands
IBRA regions
Southern Flinders (FLB04)Flinders Lofty Block
 Rare   (IUCN: RA d(i))   [edge of range]
Northern Flinders (FLB05) 
 Rare   (IUCN: RA d(ii))   [likes loamy soils & limestone]
Central Flinders (FLB06) 
 Rare   (IUCN: RA d(i,ii))   [likes loamy soils & limestone]
Torrens (GAW06)Gawler
 Rare   (IUCN: RA d(i,ii))   (Probable Decline)
Curnamona (BHC06)Broken Hill Complex
 Rare   (IUCN: RA d(i))
Murnpeowie (STP03)Stony Plains
 Rare   (IUCN: RA d(i,ii))   [likes loamy soils & limestone]
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 Swainsona]
Name derivation:
Swainsona named after Isaac Swainson (1746-1812, an English scientist and horticulturalist who had a private botanic garden near London. Burkittii named in honour of Samuel Burkitt, a botanical collector.
Distribution:
Found in red sandy or loamy soils on open plain or shrubland north of Spencers Gulf of South Australia. Also found in New South Wales.
Status:
Native. Uncommon in South Australia. More common in New South Wales.
Plant description:
An erect or procumbent perennial herb to 1m high and often forming a bush with many hairy stems arising from the taproot.  Leaves 8-15cm long with 7-30 leaflets with hairs on both sides. Flowers dark reddish purple.
Fruit type:
Paper pod 5-8 mm long and about as wide covered in hairs.
Seed type:
Orange to yellow, semi-flat reniform seeds to 3mm long with a smooth and shiny surface.
Embryo type:
Bent.
Seed collecting:
Collect mature pods. Mature pods can be found lying on the ground next to the plant containing hard seeds.
Seed cleaning:
Place the pods to dry and use a rubber bung to rub the pods or break the pods open with your fingers 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:
From two collections, the seed viability were high, ranging from 85% to 90%.
Seed germination:
This species has physical dormancy that need 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
BGA3500 (12.35 g)500+27-Jan-2010KHB354
Flinders Ranges
Jun-201085%-18°C
BGA4400 (18.11 g)50+13-Dec-2010KHB551
Flinders Ranges
1-Jan-201290%-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.