Seeds of South Australia
Craspedia variabilis (Compositae)
Bachelor Buttons
List of species for Craspedia
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Seed collecting:
October to March
Herbarium regions:
Lake Eyre, Flinders Ranges, Eastern, Eyre Peninsula, Northern Lofty, Murray, Yorke Peninsula, Southern Lofty, Kangaroo Island, South Eastern
NRM regions:
Adelaide and Mount Lofty Ranges, Eyre Peninsula, Kangaroo Island, Northern and Yorke, South Australian Arid Lands, South Australian Murray-Darling Basin, South East
IBRA regions
SUMMARY
Mount Gambier (SVP02)Southern Volcanic Plain
 Least Concern   [undercollected]
Glenelg Plain (NCP02)Naracoorte Coastal Plain
 Least Concern
Lucindale (NCP03) 
 Least Concern
Tintinara (NCP04) 
 Least Concern
Kangaroo Island (KAN01)Kanmantoo
 Vulnerable   (IUCN: VU D2)   [only known from 3 coastal pops, none in reserves]
Fleurieu (KAN02) 
 Least Concern
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Least Concern
Broughton (FLB02) 
 Rare   (IUCN: RA b)   (Probable Decline)   [Grazing a threat]
Olary Spur (FLB03) 
 Rare   (IUCN: RA b)   (Probable Decline)   [Grazing a threat]
Southern Flinders (FLB04) 
 Rare   (IUCN: RA b)   (Probable Decline)   [Grazing a threat]
Central Flinders (FLB06) 
 Vulnerable   (IUCN: VU D2)   [outlier; in Wilpena only]
Southern Yorke (EYB01)Eyre Yorke Block
 Near Threatened
Eyre Hills (EYB03) 
 Least Concern   [under-coll. Many NC records]
Talia (EYB04) 
 Least Concern
Eyre Mallee (EYB05) 
 Least Concern
Murray Mallee (MDD02)Murray Darling Depression
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)   [edge of range]
Murray Lakes and Coorong (MDD03) 
 Vulnerable   (IUCN: VU D2)   [very old records]
Lowan Mallee (MDD04) 
 Vulnerable   (IUCN: VU B2ab(i,ii,iii))   (Probable Decline)
Myall Plains (GAW01)Gawler
 Rare   (IUCN: RA d(ii))
IBRA regions
DISPLAY ALL
Mount Gambier (SVP02)Southern Volcanic PlainLeast Concern
  [undercollected]
3 of 4 subregionsNaracoorte Coastal PlainLeast Concern
2 of 2 subregionsKanmantooLeast Concern
, Vulnerable
5 of 6 subregionsFlinders Lofty BlockLeast Concern
, Rare
, Vulnerable
4 of 5 subregionsEyre Yorke BlockLeast Concern
, Near Threatened
3 of 6 subregionsMurray Darling DepressionVulnerable
Myall Plains (GAW01)GawlerRare
  (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 Craspedia]
Name derivation:
Craspedia from the Greek 'kraspedon' meaning a hem or border; referring to the woolly fringes on the leaves of the type species or the feathery pappus of some species. Variabilis from Latin meaning changeable or variable.
Distribution:
Found in the southern part of South Australia, growing on sandy to clay-loam (sometimes very shallow) soils. Also found in all states except the Northern Territory.
Status:
Native. Common in South Australia. Common in the other states.
Plant description:
Erect hairy herb with 1 to several flowering scapes to 50 cm high with thick roots. Leaves in a basal rosette and cauline, narrow-spathulate, to 13 cm long, and 20 mm wide, broad-acute, pale to olive-green, with glandular hairs and multiseptate hairs and often with very sparse fine woolly hairs (particularly near margins). Flower heads  spherical with dense golden-yellow flowers. Flowering in spring and summer.
Fruit type:
Yellow-white, globular daisy-head.
Seed type:
Brown ovoid seed to 4 mm long and 2 mm wide, covered in white hairs.
Embryo type:
Spathulate fully developed.
Seed collecting:
Collect heads that are drying off, fluffy and turning yellow-white with hard brown seeds. Pick off whole heads or pluck of mature seeds with your fingers.
Seed cleaning:
Place the heads in a tray and leave to dry for one to two weeks. Then rub the heads gently by hand 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 80%.
Seed germination:
Seeds are non-dormant, viable seed should germinate readily.
Seeds stored:
LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
14650 (14.645 g)
14650 (14.645 g)
100+12-Oct-2005DJD137
South Eastern
14-Sep-200680%-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.