Plants of
South Australia
Ceratogyne obionoides
Compositae
Wingwort
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Adelaide
Arkaroola
Ceduna
Coober Pedy
Hawker
Innamincka
Marla
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Oodnadatta
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Wudinna
Keith
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Botanical art

Kath Alcock painting: 1.

Etymology

Ceratogyne from the Greek 'keratos' meaning a horn and 'gyne' meaning female, referring to the horn-like appendages on the achene. Obionoides meaning resembling the genus Obione; may be referring to the similarity of the genus fruiting clusters and fruit shape being similar in profile to Obione pedunculata.

Distribution and status

Found on upper Eyre Peninsula in South Australia growing on sandhills. Also found in Western Australia, New South Wales and Victoria.. Native. Uncommon in South Australia. Rare in New South Wales and Victoria. Common in Western Australia.
Herbarium regions: Gairdner-Torrens, Eyre Peninsula
NRM regions: Eyre Peninsula, South Australian Arid Lands
AVH map: SA distribution map (external link)

Plant description

Annual or ephemeral herb to 15 cm high with several ascending, unbranched or few-branching, hairy stems. Leaves green or red. Basal leaves oblanceolate, attenuate at the base, to 18 mm long and 4 mm wide, entire, pubescent with a prominent mid-vein; stem leaves oblanceolate to oblong, acute to 10 mm long and 3 mm wide, entire, pubescent. Flowers yellow. between September and November. Fruits are red to brown loose clustered head. Seeds are red to brown, horse head-shaped seed to 4 mm long and 1.5 mm wide, margin curved inward with two horn-like projections, covered in scattered hairs. Seed embryo type is spatulate.

Seed collection and propagation

Collect seeds between October and November. Collect seeds that are maturing, turning red or brown by plucking it off with your fingers. Mature seeds are easily removed. Place the seeds in a tray for a week to dry. No further cleaning is required if only the seeds are collected. If collected with other material, then 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. From one collection, the seed viability was average, at 70%.

Seeds stored:
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LocationNo. of seeds
(weight grams)
Number
of plants
Date
collected
Collection number
Collection location
Date
stored
% ViabilityStorage
temperature
 
MSB

2,600 (3.93 g)
18-Sep-2008MJT180
Eyre Peninsula
70%
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.