Seeds of South Australia
Craspedia paludicola (Compositae)
Swamp Buttons
List of species for Craspedia
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Seed collecting:
October to February
Herbarium region:
South Eastern
NRM region:
South East
IBRA regions
Bridgewater (NCP01)Naracoorte Coastal Plain
 Vulnerable   (IUCN: VU D2)
Glenelg Plain (NCP02) 
 Vulnerable   (IUCN: VU D2)
Lucindale (NCP03) 
 Rare   (IUCN: RA d(ii))
Lowan Mallee (MDD04)Murray Darling Depression
 Vulnerable   (IUCN: VU B2ab(i,ii,iii,iv); C2a(i); D1)
Wimmera (MDD05) 
 Vulnerable   (IUCN: VU D2)   [in parklands]
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. Paludicola from the Latin 'paludosus' meaning marshy and 'cola' meaning dwelling; alluding to the species usual habitat in swampy sites.
Distribution:
Found only in the lower South-east in South Australia, growing in swampy areas and drainage lines, usually in heavy clayey soils, often partially submerged for at least some of the growing season. Also found in New South Wales, Victoria and Tasmania.
Status:
Native. Rare in South Australia. Common in the other states.
Plant description:
Robust hairy herb with 1–3 flowering scapes to 75 cm high with thick roots. Leaves basal and cauline, narrow-oblanceolate, to 40 cm long and 20 mm wide, obtuse, usually deep red and attenuate at the base and broadly stem-clasping, with 1 to several prominent longitudinal veins, glabrous or with few scattered finely woolly or multiseptate hairs (sometimes denser on margins or midrib), old leaf at base retained. Flower heads  solitary globular shape with bright yellow dense flowers. Flowering in spring and summer.
Fruit type:
Yellow-white, globular daisy-head.
Seed type:
Brown ovoid seed to 2 mm long and 1 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 average, at 55%.
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
15000 (21.16 g)
9000 (12.69 g)
60-7023-Oct-2006DJD617
South Eastern
1-Aug-200755%+5°C, -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.