Seeds of South Australia
Swainsona flavicarinata (Leguminosae)
Yellow-keel Swainson-pea
List of species for Swainsona
Display more images
Click on an image to enlarge it
Seed collecting:
September to November
Herbarium regions:
North Western, Lake Eyre, Nullarbor, Gairdner-Torrens, Flinders Ranges, Eastern
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, South Australian Arid Lands
IBRA regions
SUMMARY
Olary Spur (FLB03)Flinders Lofty Block
 Rare   (IUCN: RA d(i))
Northern Flinders (FLB05) 
 Rare   (IUCN: RA d(ii))
Central Flinders (FLB06) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)   [southern edge of range]
Torrens (GAW06)Gawler
 Rare   (IUCN: RA d(i,ii))
Yellabinna (GVD06)Great Victoria Desert
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Definite Decline)
Carlisle (NUL01)Nullarbor
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Definite Decline)
Bimbowrie (BHC05)Broken Hill Complex
 Rare   (IUCN: RA d(i))
Curnamona (BHC06) 
 Rare   (IUCN: RA d(i))
Simpson Desert (SSD02)Simpson Strzelecki Dunefields
 Near Threatened
Dieri (SSD03) 
 Near Threatened
Strzelecki Desert (SSD05) 
 Rare   (IUCN: RA d(i,ii))
Breakaways (STP01)Stony Plains
 Rare   (IUCN: RA d(i,ii))
Murnpeowie (STP03) 
 Near Threatened
Witjira (STP06) 
 Rare   (IUCN: RA d(i,ii))
Sturt Stony Desert (CHC02)Channel Country
 Least Concern
Coongie (CHC06) 
 Data Deficient
Lake Pure (CHC07) 
 Least Concern
Mann-Musgrave Block (CER01)Central Ranges
 Rare   (IUCN: RA d(ii))
IBRA regions
DISPLAY ALL
3 of 6 subregionsFlinders Lofty BlockRare
, Vulnerable
Torrens (GAW06)GawlerRare
  (IUCN: RA d(i,ii))
Yellabinna (GVD06)Great Victoria DesertVulnerable
  (IUCN: VU B2ab(i,ii,iii))   (Definite Decline)
Carlisle (NUL01)NullarborVulnerable
  (IUCN: VU B2ab(i,ii,iii))   (Definite Decline)
2 of 4 subregionsBroken Hill ComplexRare
3 of 4 subregionsSimpson Strzelecki DunefieldsNear Threatened
, Rare
3 of 7 subregionsStony PlainsNear Threatened
, Rare
3 of 4 subregionsChannel CountryLeast Concern
, Data Deficient
Mann-Musgrave Block (CER01)Central RangesRare
  (IUCN: RA d(ii))
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. Flavicarinata from the Latin 'flavus' meaning yellow and 'carina' meaning a keel; referring to the yellow keel of the species.
Distribution:
Found usually in deep red sand in watercourses and floodplains in inland South Australia. Also found in Western Australia, Northern Territory, Queensland and New South Wales.
Status:
Native. Common in South Australia. Common in Northern Territory. Uncommon in the other States. 
Plant description:
Prostrate or ascending perennial to 45cm high with many hairy stems arising from a taproot. Leaves 2–6 cm long with 5-9 obovate leaflets, upper surface hairless and lower surface loosely densely pubescent. Flowers red or pink with 3–15-flowers on  a stalk.  
Fruit type:
Pod hairy obovoid to wide-oblong, 10–15 mm long.
Seed type:
Yellow brown mottled reinform seed to 2.5mm long and 2mm wide with a wrinkled 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:
When dried the pods become hard and difficult to open. 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 one collection, the seed viability was high, at 95%.
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
BGA1100 (4.13 g)523-Nov-2010KHB382
Flinders Ranges
1-Jan-201295%-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.