Plants of
South Australia
Craspedia paludicola
Compositae
Swamp Buttons
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Regional Species Conservation Assessments per IBRA subregion.
Least concern
Near threatened
Rare
Vulnerable
Endangered
Critically endangered
Extinct
Data deficient
Adelaide
Arkaroola
Ceduna
Coober Pedy
Hawker
Innamincka
Marla
Marree
Mount Gambier
Oodnadatta
Renmark
Wudinna
Keith
Yunta
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Botanical art

Kath Alcock paintings: 5.

Etymology

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 and status

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. Native. Rare in South Australia. Common in the other States.
Herbarium region: South Eastern
NRM region: South East
AVH map: SA distribution map (external link)

Plant description

Robust hairy herb with thick roots; 1 to several flowering scapes to 75 cm high; leaves basal and cauline, narrow-oblanceolate to 40cm 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 multi-septate 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. Fruits are yellow-white, globular daisy-head. Seeds are brown ovoid seed to 2 mm long and 1 mm wide, covered in white hairs. Seed embryo type is spatulate fully developed.

Seed collection and propagation

Collect seeds between October and February. Collect heads that are drying off, fluffy and turning yellow-white with hard brown seeds. Pick off whole heads or pluck off mature seeds with your fingers. 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. From one collection, the seed viability was average, at 55%. Seeds are non-dormant, viable seed should germinate readily.

Seeds stored:
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LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
BGA 
MSB
15,000 (21.16 g)
9,000 (12.69 g)
7023-Oct-2006DJD617
South Eastern
1-Aug-200755%+5°C, -18°C
BGA4,600 (3.35 g)100+14-Nov-2017DJD3683
South Eastern
30-Jun-201875%-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.