Seeds of South Australia
Cullen discolor (Leguminosae)
White-flower Scurf-pea
List of species for Cullen
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Seed collecting:
September to March
Herbarium regions:
North Western, Lake Eyre, Nullarbor, Gairdner-Torrens, Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray
NRM regions:
Alinytjara Wilurara, Eyre Peninsula, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin
IBRA regions
SUMMARY
Broughton (FLB02)Flinders Lofty Block
 Rare   (IUCN: RA d(i))   [taxonomic issues]
Olary Spur (FLB03) 
 Rare   (IUCN: RA d(i))
Northern Flinders (FLB05) 
 Rare   (IUCN: RA d(ii))   [edge of range]
Central Flinders (FLB06) 
 Rare   (IUCN: RA d(ii))   [edge of range]
Eyre Hills (EYB03)Eyre Yorke Block
 Rare   (IUCN: RA d(ii))   [edge of range]
Eyre Mallee (EYB05) 
 Rare   (IUCN: RA d(ii))
South Olary Plain (MDD01)Murray Darling Depression
 Rare   (IUCN: RA d(i,ii))   [difficult to ID]
Murray Mallee (MDD02) 
 Vulnerable   (IUCN: VU D2)
Murray Scroll Belt (RIV06)Riverina
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)
Gawler Volcanics (GAW02)Gawler
 Rare   (IUCN: RA d(ii))
Torrens (GAW06) 
 Least Concern
Roxby (GAW07) 
 Rare   (IUCN: RA d(i,ii))
Yellabinna (GVD06)Great Victoria Desert
 Rare   (IUCN: RA d(ii))   [edge of range]
Nullarbor Plain (NUL02)Nullarbor
 Rare   (IUCN: RA d(ii))   [edge of range]
Barrier Range Outwash (BHC04)Broken Hill Complex
 Rare   (IUCN: RA d(i))
Simpson Desert (SSD02)Simpson Strzelecki Dunefields
 Least Concern
Dieri (SSD03) 
 Least Concern
Warriner (SSD04) 
 Rare   (IUCN: RA d(ii))
Strzelecki Desert (SSD05) 
 Least Concern
Oodnadatta (STP02)Stony Plains
 Near Threatened
Murnpeowie (STP03) 
 Least Concern
Macumba (STP05) 
 Near Threatened
Witjira (STP06) 
 Near Threatened
Baltana (STP07) 
 Rare   (IUCN: RA d(i,ii))
Sturt Stony Desert (CHC02)Channel Country
 Near Threatened
Diamantina-Eyre (CHC04) 
 Near Threatened
Coongie (CHC06) 
 Least Concern
IBRA regions
DISPLAY ALL
4 of 6 subregionsFlinders Lofty BlockRare
2 of 5 subregionsEyre Yorke BlockRare
2 of 6 subregionsMurray Darling DepressionRare
, Vulnerable
Murray Scroll Belt (RIV06)RiverinaVulnerable
  (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)
3 of 8 subregionsGawlerLeast Concern
, Rare
Yellabinna (GVD06)Great Victoria DesertRare
  (IUCN: RA d(ii))   [edge of range]
Nullarbor Plain (NUL02)NullarborRare
  (IUCN: RA d(ii))   [edge of range]
Barrier Range Outwash (BHC04)Broken Hill ComplexRare
  (IUCN: RA d(i))
4 of 4 subregionsSimpson Strzelecki DunefieldsLeast Concern
, Rare
5 of 7 subregionsStony PlainsLeast Concern
, Near Threatened
, Rare
3 of 4 subregionsChannel CountryLeast Concern
, Near Threatened
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 Cullen]
Name derivation:
Cullen named after William Cullen (1710-1790), a Scottish physician and chemist who lectured at the University of Glasgow on among other things botany. Discolor from Latin meaning different colours; alluding to the bi-coloured flowers.
Distribution:
Found scattered across South Australia except on Yorke Peninsula, Kangaroo Island, Mount Lofty Ranges and the South-east, growing on sandy soil. Also found in all mainland states.
Status:
Native. Comon in South Australia. Rare in Victoria. Common in the other states.
Plant description:
Prostrate perennial herb, usually with a greyish appearance with stems to 1.5 m long, striate, grey-pubescent, glands not visible. Leaves pinnately trifoliolate, to 10 cm long. Leaflets more or less ovate, to 5 cm long and 40 mm wide, upper surface glabrescent to grey-pubescent, lower surface usually more densely hairy, both surfaces dotted with glands, apices obtuse, margins irregularly toothed, undulate. Flower-spike to 8 cm long, peduncles mostly 2–26 mm long in early flower, with white with a purplish blotch on keel or rarely all purple pea-flowers in 2s or 3s. Flowering mainly between September and January.
Fruit type:
Brown ovoid pod, with one seed.
Seed type:
Dark brown to black bean-shaped seed to 3.5 mm long and 2 mm wide, smooth surface with some hairs.  .
Embryo type:
Bent.
Seed collecting:
Collect maturing pods, those that are fat, turning black and contain a brown seed inside, by running your hands along the fruit-spikes.
Seed cleaning:
Place the pods in a tray and leave to dry for 1 to 2 weeks or until the pods begin to split. Then rub the dried pods to dislodge the seeds. Use a sieve to separate any 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 85%.
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
BGA10400 (39.32 g)100+27-Sep-2007MJT93
Lake Eyre
19-Sep-200885%-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.